CN1583804A - Use and preparation of molecular track polymer of sulfonyl urea herbicide - Google Patents
Use and preparation of molecular track polymer of sulfonyl urea herbicide Download PDFInfo
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- CN1583804A CN1583804A CN 200410049648 CN200410049648A CN1583804A CN 1583804 A CN1583804 A CN 1583804A CN 200410049648 CN200410049648 CN 200410049648 CN 200410049648 A CN200410049648 A CN 200410049648A CN 1583804 A CN1583804 A CN 1583804A
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Abstract
The invention provides a preparation method of molecular track polymer of sulfonyl urea herbicide and method for isolation and purification and detection of the sulfonyl urea herbicide using molecular track method. The molecular track polymer has selective adsorption property for the sulfonyl urea herbicide, and can isolate-purify, concentrate and rapidly detect and analyze the sulfonyl urea herbicide of environment sample.
Description
Technical field
The present invention relates to a kind of preparation method of sulfonylurea weedicide molecularly imprinted polymer, more particularly, relate to a kind of preparation method who template molecule both sulfonylurea herbicide is had the polymkeric substance of singleness identity.The invention still further relates to and adopt described molecularly imprinted polymer separation and purification and the application of measuring the sulfonylurea herbicide in the environmental samples.
Background technology
Sulfonylurea herbicide is the efficient agricultural chemical of exploitation such as E.I.Du Pont Company, is the sign that weedicide enters the ultra-high efficiency epoch, and it makes the consumption of weedicide by former 1-3kg a.i./hm
2Become 1-150g a.i./hm
2This class herbicide selective is strong, the rapid and glucose formation glucosides conjugates of energy in the resistance crop body, thus play detoxification; To the animal low toxicity, accumulation hardly in the non-target organism body.Because advantages such as the ultra-high efficiency of this type of weedicide, low consumption, low toxicity, make this class weedicide obtain using widely, but also because consumption is low, and this class weedicide is than macromolecular substance, be unfavorable for highly sensitive gas chromatographic detection, and the remolding sensitivity of liquid chromatography is lower, the residue detection of general this type of weedicide mostly is to be undertaken by the method for biological assay, biological assay also exist a lot of unfavorable factors as: detect and to differ greatly, even its vitality size of big or small much the same seed also has very big-difference; Because what the absorption of soil or plant made mensuration mainly is relative content, is not absolute content; And be not suitable for the detection of the single medicament that contains multiple residue.If the applied chemistry detection technique, solid-phase extraction column (SPE post) common on extractive technique is generally all lower to the rate of recovery of sulfonylurea herbicide.As seen Chang Gui method exists a lot of weak points to the residual detection of sulfonylurea herbicide.
Summary of the invention
Deficiency and defective at the residual extraction detection method of present sulfonylurea herbicide, the purpose of this invention is to provide a kind of method of utilizing molecular imprinting method that sulfonylurea herbicide is carried out separation and purification, realize separation, enrichment, the highly sensitive detection of the height selection of sulfonylurea herbicide.
One of purpose of the present invention provides a kind of preparation method who template molecule both sulfonylurea herbicide is had the molecularly imprinted polymer of singleness identity.Specifically, preparation of the present invention is template molecule with the sulfonylurea herbicide, one or both of polymerization single polymerization monomer that are selected from acrylic acid or the like, pyridines, amides and other class etc. are mixed with linking agent, pore-creating agent, initiator and microsphere sulfonylurea herbicide standard specimen, for example adopt ultrasonic power to mix above-mentioned reaction mixture, join in the reactor, airtight behind the feeding nitrogen, under thermal initiation and/or light-initiated condition, carry out in-situ polymerization.The polymkeric substance of removing template molecule is cleaned to neutral with organic solvent, dry under the vacuum, both made the molecularly imprinted polymer of sulfonylurea herbicide.
Another object of the present invention provides a kind of method that adopts described molecularly imprinted polymer sulfonylurea herbicide to be carried out separation and purification.Described method comprises the steps: that the molecularly imprinted polymer that will obtain is filled into and makes solid-phase extraction column (SPE post) in the syringe, with environmental samples for example the extracting solution of soil or plant carry out purification enrichment with this solid-phase extraction column, remove the interfering substance of non-sulfonylurea with the organic solvent flushing, and then use the organic solvent wash-out, collect elution fraction, i.e. the sulfonylurea herbicide that separation and purification goes out.
Another object of the present invention also is to provide a kind of and adopts described molecularly imprinted polymer that the sulfonylurea herbicide in the environmental samples is for example carried out Rapid Determination Method.The molecularly imprinted polymer that utilizes the present invention to prepare has the selective adsorption feature to sulfonylurea herbicide, can separate purification to the sulfonylurea herbicide in the environmental samples for example, concentrate and the rapid determination analysis.
In specific embodiment, the molecularly imprinted polymer that the present invention prepares sulfonylurea herbicide comprises the steps:
(1) one or both of polymerization single polymerization monomer that will for example be selected from acrylic acid or the like, pyridines, amides and other class mix with linking agent, pore-creating agent, initiator and microsphere sulfonylurea herbicide standard specimen;
In this step (1), the consumption of microsphere and aggressiveness monomer, linking agent, pore-creating agent does not have strict the qualification, and they can be adjusted as required, and generally speaking, their consumption is as follows:
A. the weight ratio of described microsphere and described monomeric substance is 0.001-10: 1, be preferably 0.005-5: 1;
The weight ratio of b. described linking agent and described monomeric material is 0.5-20: 1, be preferably 1-10: 1;
C. described pore-creating agent consumption is the 30%-75% of reaction mixture volume content;
(2) for example adopt ultrasonic power to mix above-mentioned reaction mixture, in container, adopt thermal initiation or light-initiated mode to carry out in-situ polymerization;
In this step, generally speaking, the thermal booster reaction condition is, polymerization temperature be controlled at 60 ℃-90 ℃ isothermal reaction 6-48 hour; The Photoinitiated reactions condition is under 125w or the 150w high voltage mercury lamp polymerase 10 .5-48 hour;
In-situ polymerization can adopt one of for example following two kinds of modes: after 1) mixing, join in container such as the reactor, for example feed behind 3-10 minute the nitrogen airtight; 2) mix after, be added in the gc column tube of container such as sky, the preparation integral post;
(3) polymkeric substance that polyreaction in (2) is obtained after finishing takes out from reactor, grinds, and sieves, and cleans with organic solvent earlier, uses the mixing solutions wash-out of organic solvent and organic acid (as glacial acetic acid, formic acid etc.) again, to removing template molecule;
(4) polymkeric substance that will remove template molecule cleans to neutral with organic solvent, and is dry under the vacuum, both made the molecularly imprinted polymer of sulfonylurea herbicide.
The method of the sulfonylurea herbicide in the separation and purification environmental samples of the present invention comprises the steps:
(5) molecularly imprinted polymer of the present invention that will make in a manner described is filled into and makes solid-phase extraction column (SPE post) in the syringe, with environmental samples for example the extracting solution of soil or plant carry out purification enrichment with this SPE post, remove the interfering substance of non-sulfonylurea with the organic solvent flushing, and then use the organic solvent wash-out, collect elution fraction, promptly get isolated sulfonylurea herbicide;
The method that the present invention measures sulfonylurea herbicide comprises the steps:
(6) utilize the molecularly imprinted polymer of the present invention that makes in a manner described to be loaded in the gc column tube, obtain the molecular imprinting separator column, this chromatographic column is connected in the liquid chromatographic system elutriant in above-mentioned (5) is detected.
Template molecule described in the present invention is a sulfonylurea herbicide, be meant the herbicidal activity compound, comprise yellow grand, the azoles ethyl methyl of yellow grand, the ring of yellow grand, the pyridine miaow of yellow grand, the pyrazosulfuron of yellow grand, the Fluoropyrimidinesulfuron of yellow grand, the triasulfuron of yellow grand, the benzyl ethyl methyl of yellow grand, the tetrazolium of Ethanetsulfuron, metsulfuron-methyl, chlorsulfuron, tribenuron-methyl, first ethyl methyl, rimsulfuron, thiophene methyl, fluorine pyridine, chlorimuron, fluorine amine, sulphur ammonia, ether, nicoculsfuron, fluorine third third etc.
Polymerization single polymerization monomer described in the present invention is a monomer commonly used in the present molecular imprinting preparation, comprises acrylic acid or the like (for example methacrylic acid, methyl acrylic ester, vinylformic acid or esters of acrylic acid), pyridines, amides and other class monomer etc.The monomer that can adopt among the present invention can exemplify: acrylic acid or the like is vinylformic acid (AA), methacrylic acid (MAA), trifluoromethyl acrylate (TFMAA), methyl methacrylate (MMA), methacrylic acid hydroxyethyl ester (HEMA), methacrylic diethylammonium salt ethyl ester (DEAEM) for example; Pyridines for example 2,6-diamino-pyridine, 4-vinylpridine (4-VP), 2-vinyl pyridine (2-VP); Amides such as acrylamide (AM), diacrylamine-2-methyl isophthalic acid-propanesulfonic acid; Other class monomer for example to Ethenylbenzene formic acid, to ethylbenzene acetate, methylene-succinic acid (ITA), 1-vinyl imidazole, N-vinyl-a-tetramethyleneimine (NVP), 2-vinyl-4,6 diamino-s-triazine (VDTA) etc.Preferably, acrylic acid or the like and pyridines.More preferably, vinylformic acid (AA), methacrylic acid (MAA), trifluoromethyl acrylate (TFMAA), methyl methacrylate (MMA), 4-vinylpridine (4-VP), 2-vinyl pyridine (2-VP).Most preferably, methacrylic acid (MAA), trifluoromethyl acrylate (TFMAA) and 4-vinylpridine (4-VP).
Linking agent described in the present invention is a linking agent commonly used in the present molecular imprinting preparation, comprise: trimethylolpropane trimethacrylate (TRIM), N, N-methylene diacrylamine, N, N-1,4-phenylene diacrylamine, 3,5-two (acrylamide) phenylformic acid, ethylene glycol dimethacrylate (EGDMA), Vinylstyrene (DVB), N, O-two acryloyls-L-phenylalaninol, pentaerythritol triacrylate (PETRA), tetramethylol methane tetraacrylate (PETEA) etc.Preferably, ethylene glycol dimethacrylate (EGDMA), Vinylstyrene (DVB) and trimethylolpropane trimethacrylate (TRIM).More preferably, ethylene glycol dimethacrylate (EGDMA) and Vinylstyrene (DVB).
Pore-creating agent described in the present invention adopts methylene dichloride, chloroform, acetonitrile, methyl alcohol, Virahol, tetracol phenixin and heterogeneous ring compound acid amides or sulfone compound.Preferably, methylene dichloride and chloroform.
Initiator is adopted in light-initiated or thermal-initiated polymerization reaction in the above-mentioned steps among the present invention (2).Described initiator adopts organic peroxy class or azo compound, preferably adopts Diisopropyl azodicarboxylate.
The used organic solvent of flushing is among the present invention: the mixed solution of methyl alcohol or acetonitrile or chloroform and acetate.
Acid described in the present invention is: conventional organic acid such as glacial acetic acid, formic acid etc.
Beneficial effect of the present invention:
1, the method for preparing sulfonylurea weedicide molecularly imprinted polymer that the present invention developed is template molecule with the sulfonylurea herbicide, the molecular recognition material of gained has good molecular recognition performance, for the preparation of the molecularly imprinted polymer of sulfonylurea herbicide provides a kind of feasible preparation scheme.
2, the molecularly imprinted polymer for preparing of the present invention has selectivity to sulfonylurea herbicide, can separate purification to the sulfonylurea herbicide in the environmental samples, also can carry out rapid determination to target molecule.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
Take by weighing 0.03560g template molecule Ethanetsulfuron, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent chloroform, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the molecularly imprinted polymer (MIP) of Ethanetsulfuron.
Above-mentioned molecularly imprinted polymer (MIP) material is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate the recovering effect of SPE post to target pesticide molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 2
Take by weighing 0.600g template molecule metsulfuron-methyl, 1.120g reaction monomers trifluoromethyl acrylate (TFMAA), 5.7ml linking agent Vinylstyrene (DVB), 0.0100g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent methylene dichloride, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the molecularly imprinted polymer (MIP) of metsulfuron-methyl.
Above-mentioned molecularly imprinted polymer (MIP) material is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of SPE post to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 3
Take by weighing 0.3570g template molecule chlorsulfuron, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent methylene dichloride, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the grand molecularly imprinted polymer (MIP) of green sulphur.
Above-mentioned molecularly imprinted polymer (MIP) powder of crossing 200 mesh sieves is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of SPE post to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 4
Take by weighing 0.1100g template molecule benzyl ethyl methyl, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent methylene dichloride, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the molecularly imprinted polymer (MIP) of benzyl ethyl methyl.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 5
Take by weighing 0.0170g template molecule chlorimuron, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent chloroform, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the molecularly imprinted polymer (MIP) of chlorimuron.
Above-mentioned molecularly imprinted polymer (MIP) material is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 6
Take by weighing 0.230g template molecule pyrazosulfuron, 0.6857g reaction monomers 2-vinyl-4,6 diamino-s-triazine (VDTA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent chloroform, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the molecularly imprinted polymer (MIP) of pyrazosulfuron.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 7
Take by weighing 0.0400g template molecule Fluoropyrimidinesulfuron, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent chloroform, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the molecularly imprinted polymer (MIP) of Fluoropyrimidinesulfuron.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 8
Take by weighing that 0.1100g template molecule fluorine amine is yellow grand, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent chloroform, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the yellow grand molecularly imprinted polymer (MIP) of fluorine amine.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 9
Take by weighing 0.0320g template molecule first ethyl methyl, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent chloroform, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the molecularly imprinted polymer (MIP) of first ethyl methyl.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 10
Take by weighing 0.0100g template molecule rimsulfuron, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent chloroform, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the molecularly imprinted polymer (MIP) of rimsulfuron.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 11
Take by weighing 0.300g template molecule tribenuron-methyl, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent methylene dichloride, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the molecularly imprinted polymer (MIP) of tribenuron-methyl.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 12
Take by weighing 0.2500g template molecule thiophene methyl, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent methylene dichloride, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the molecularly imprinted polymer (MIP) of thiophene methyl.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 13
Take by weighing that the pyridine of 0.0120g template molecule fluorine is yellow grand, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent chloroform, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the yellow grand molecularly imprinted polymer (MIP) of fluorine pyridine.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 14
Take by weighing that 0.0060g template molecule tetrazolium is yellow grand, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent methylene dichloride, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the yellow grand molecularly imprinted polymer (MIP) of tetrazolium.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 15
Take by weighing 0.0210g template molecule triasulfuron, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent chloroform, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the molecularly imprinted polymer (MIP) of triasulfuron.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 16
Take by weighing that 0.10g template molecule sulphur ammonia is yellow grand, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent chloroform, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the yellow grand molecularly imprinted polymer (MIP) of sulphur ammonia.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 17
Take by weighing that 0.050g template molecule ether is yellow grand, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent methylene dichloride, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the yellow grand molecularly imprinted polymer (MIP) of ether.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate purification and the recovering effect of solid-phase extraction column (SPE post) to target molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 18
Take by weighing yellow grand, the 0.4305g reaction monomers vinylformic acid (MAA) of 0.020g template molecule ring third, 6.160g linking agent trimethoxy propane trimethyl acrylic ester (TRIM), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent chloroform, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains encircling the third yellow grand molecularly imprinted polymer (MIP).
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate the recovering effect of solid-phase extraction column (SPE post) to target pesticide molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 19
Take by weighing 0.0040 template molecule nicoculsfuron, 0.705g reaction monomers trifluoromethyl acrylate (TFMAA), 2.600g linking agent Vinylstyrene (DVB), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent chloroform, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the molecularly imprinted polymer (MIP) of nicoculsfuron.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate the recovering effect of solid-phase extraction column (SPE post) to target pesticide molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 20
Take by weighing yellow grand, the 0.5750g reaction monomers 4-vinylpridine (4-VP) of 1.80g template molecule fluorine third, 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent methylene dichloride, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the fluorine third yellow grand molecularly imprinted polymer (MIP).
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate the recovering effect of solid-phase extraction column (SPE post) to target pesticide molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 21
Take by weighing that 0.1280g template molecule pyridine miaow is yellow grand, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA),, 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent methylene dichloride, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 1) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the yellow grand molecularly imprinted polymer (MIP) of pyridine miaow.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate the recovering effect of solid-phase extraction column (SPE post) to target pesticide molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 150mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Embodiment 22
Take by weighing 0.020g template molecule azoles ethyl methyl, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.08211g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent methylene dichloride, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 72 hours in 70 ℃ of baking ovens.Polymer monolith is taken out, grind, extracting, drying is sieved.Adopt methyl alcohol: the mixing solutions of acetate (volume ratio 9: 2) is the polymkeric substance that makes of ultrasonic cleaning repeatedly, until detecting less than template molecule in the maximum absorption wave strong point, remove excessive acetate with washed with methanol again, drying obtains the molecularly imprinted polymer (MIP) of azoles ethyl methyl.
Above-mentioned molecularly imprinted polymer (MIP) powder is filled in the glass syringe from being prepared as solid-phase extraction column (SPE post), and investigate the recovering effect of solid-phase extraction column (SPE post) to target pesticide molecule in water, vegetables extracting solution, the soil extract fluid samples, molecular recognition the results are shown in Table one.Molecularly imprinted polymer (MIP) material is filled in the 200mm*4.6mm ID chromatographic column, is connected on the chromatographic instrument.Investigation is to the separating effect of different target molecule, and its molecular recognition the results are shown in Table 2.The absorption property of molecularly imprinted polymer (MIP) material in solution is as shown in table 3.
Solid-phase extraction column (SPE post) purification of table 1 differing molecular imprinted polymer (MIP) preparation and the investigation result of the rate of recovery
| Molecularly imprinted polymer (MIP) code name | Monomer | Linking agent | Template molecule | The rate of recovery in the water (%) | The rate of recovery in the vegetables (%) | The rate of recovery in the soil (%) |
| Embodiment 1 | ?MAA | ?EGDMA | Ethanetsulfuron | 91-102 | ?92-103 | ?96-105 |
| Embodiment 2 | ?TFMAA | ?DVB | Metsulfuron-methyl | 92-104 | ?93-105 | ?97-109 |
| Embodiment 3 | ?MAA | ?EGDMA | Chlorsulfuron | 90-101 | ?91-104 | ?93-108 |
| Embodiment 4 | ?MAA | ?EGDMA | The benzyl ethyl methyl | 88-103 | ?88-102 | ?90-104 |
| Embodiment 5 | ?MAA | ?EGDMA | Chlorimuron | 75-101 | ?80-103 | ?85-105 |
| Embodiment 6 | ?VDTA | ?EGDMA | Pyrazosulfuron | 78-102 | ?79-105 | ?79-104 |
| Embodiment 7 | ?MAA | ?EGDMA | Fluoropyrimidinesulfuron | 83-101 | ?85-105 | ?89-103 |
| Embodiment 8 | ?MAA | ?EGDMA | Fluorine amine is yellow grand | 84-102 | ?84-103 | ?87-105 |
| Embodiment 9 | ?MAA | ?EGDMA | The first ethyl methyl | 80-101 | ?82-102 | ?85-104 |
| Embodiment 10 | ?MAA | ?EGDMA | Rimsulfuron | 81-101 | ?80-105 | ?83-105 |
| Embodiment 11 | ?MAA | ?EGDMA | Tribenuron-methyl | 92-102 | ?94-105 | ?96-109 |
| Embodiment 12 | ?MAA | ?EGDMA | Thiophene methyl | 77-98 | ?78-102 | ?80-105 |
| Embodiment 13 | ?MAA | ?EGDMA | The fluorine pyridine is yellow grand | 79-102 | ?82-101 | ?85-103 |
| Embodiment 14 | ?MAA | ?EGDMA | Tetrazolium is yellow grand | 84-101 | ?83-102 | ?87-105 |
| Embodiment 15 | ?MAA | ?EGDMA | Triasulfuron | 80-102 | ?83-103 | ?84-105 |
| Embodiment 16 | ?MAA | ?EGDMA | Sulphur ammonia is yellow grand | 81-101 | ?82-103 | ?84-103 |
| Embodiment 17 | ?MAA | ?EGDMA | Ether is yellow grand | 79-101 | ?80-103 | ?82-104 |
| Embodiment 18 | ?MAA | ?TRIM | Ring third is yellow grand | 83-101 | ?83-103 | ?85-105 |
| Embodiment 19 | ?TFMAA | ?DVB | Nicoculsfuron | 92-101 | ?94-103 | ?96-105 |
| Embodiment 20 | ?4-VP | ?EGDMA | Fluorine third is yellow grand | 78-101 | ?79-103 | ?80-102 |
| Embodiment 21 | ?MAA | ?EGDMA | The pyridine miaow is yellow grand | 79-101 | ?81-103 | ?83-105 |
| Embodiment 22 | ?MAA | ?EGDMA | The azoles ethyl methyl | 91-101 | ?95-102 | ?96-105 |
The molecularly imprinted polymer stationary phase is to the retention properties of different compounds under the table 2HPLC condition
| Molecularly imprinted polymer (MIP) code name | Monomer | Linking agent | Template molecule | Molecularly imprinted polymer (MIP) median size (μ m) | Template molecule is by the ratio of molecularly imprinted polymer (MIP) post with the retention time of contrast post |
| Embodiment 1 | ?MAA | ?EGDMA | Ethanetsulfuron | 67 | ?3.1 |
| Embodiment 2 | ?TFMAA | ?DVB | Metsulfuron-methyl | 67 | ?2.5 |
| Embodiment 3 | ?MAA | ?EGDMA | Chlorsulfuron | 67 | ?3.5 |
| Embodiment 4 | ?MAA | ?EGDMA | The benzyl ethyl methyl | 67 | ?3.2 |
| Embodiment 5 | ?MAA | ?EGDMA | Chlorimuron | 56 | ?2.6 |
| Embodiment 6 | ?VDTA | ?EGDMA | Pyrazosulfuron | 56 | ?2.9 |
| Embodiment 7 | ?MAA | ?EGDMA | Fluoropyrimidinesulfuron | 56 | ?4.2 |
| Embodiment 8 | ?MAA | ?EGDMA | Fluorine amine is yellow grand | 56 | ?2.5 |
| Embodiment 9 | ?MAA | ?EGDMA | The first ethyl methyl | 56 | ?3.2 |
| Embodiment 10 | ?MAA | ?EGDMA | Rimsulfuron | 67 | ?3.1 |
| Embodiment 11 | ?MAA | ?EGDMA | Tribenuron-methyl | 67 | ?2.8 |
| Embodiment 12 | ?MAA | ?EGDMA | Thiophene methyl | 67 | ?2.4 |
| Embodiment 13 | ?MAA | ?EGDMA | The fluorine pyridine is yellow grand | 67 | ?2.1 |
| Embodiment 14 | ?MAA | ?EGDMA | Tetrazolium is yellow grand | 67 | ?3.2 |
| Embodiment 15 | ?MAA | ?EGDMA | Triasulfuron | 67 | ?3.5 |
| Embodiment 16 | ?MAA | ?EGDMA | Sulphur ammonia is yellow grand | 67 | ?3.0 |
| Embodiment 17 | ?MAA | ?EGDMA | Ether is yellow grand | 67 | ?3.6 |
| Embodiment 18 | ?MAA | ?TRIM | Ring third is yellow grand | 67 | ?4.1 |
| Embodiment 19 | ?TFMAA | ?DVB | Nicoculsfuron | 67 | ?3.9 |
| Embodiment 20 | ?4-VP | ?EGDMA | Fluorine third is yellow grand | 67 | ?3.2 |
| Embodiment 21 | ?MAA | ?EGDMA | The pyridine miaow is yellow grand | 67 | ?3.5 |
| Embodiment 22 | ?MAA | ?EGDMA | The azoles ethyl methyl | 67 | ?2.4 |
Table 3 differing molecular imprinted polymer (MIP) material is investigated the result to the absorption property of target molecule
| The molecularly imprinted polymer code name | Monomer | Linking agent | Template molecule | Absorption was than (%) in 1 hour | Absorption was than (%) in 2 hours | Absorption was than (%) in 6 hours | Absorption was than (%) in 24 hours |
| Embodiment 1 | ?MAA | ?EGDMA | Ethanetsulfuron | 81 | ?85 | ?89 | ?95 |
| Embodiment 2 | ?TFMAA | ?DVB | Metsulfuron-methyl | 88 | ?88 | ?90 | ?96 |
| Embodiment 3 | ?MAA | ?EGDMA | Chlorsulfuron | 86 | ?88 | ?90 | ?98 |
| Embodiment 4 | ?MAA | ?EGDMA | The benzyl ethyl methyl | 80 | ?81 | ?85 | ?99 |
| Embodiment 5 | ?MAA | ?EGDMA | Chlorimuron | 81 | ?82 | ?89 | ?94 |
| Embodiment 6 | ?VDTA | ?EGDMA | Pyrazosulfuron | 83 | ?84 | ?89 | ?93 |
| Embodiment 7 | ?MAA | ?EGDMA | Fluoropyrimidinesulfuron | 82 | ?83 | ?88 | ?96 |
| Embodiment 8 | ?MAA | ?EGDMA | Fluorine amine is yellow grand | 84 | ?85 | ?89 | ?97 |
| Embodiment 9 | ?MAA | ?EGDMA | The first ethyl methyl | 87 | ?88 | ?91 | ?95 |
| Embodiment 10 | ?MAA | ?EGDMA | Rimsulfuron | 80 | ?82 | ?88 | ?94 |
| Embodiment 11 | ?MAA | ?EGDMA | Tribenuron-methyl | 89 | ?90 | ?93 | ?92 |
| Embodiment 12 | ?MAA | ?EGDMA | Thiophene methyl | 81 | ?82 | ?85 | ?95 |
| Embodiment 13 | ?MAA | ?EGDMA | The fluorine pyridine is yellow grand | 82 | ?83 | ?86 | ?97 |
| Embodiment 14 | ?MAA | ?EGDMA | Tetrazolium is yellow grand | 84 | ?85 | ?88 | ?93 |
| Embodiment 15 | ?MAA | ?EGDMA | Triasulfuron | 81 | ?82 | ?85 | ?90 |
| Embodiment 16 | ?MAA | ?EGDMA | Sulphur ammonia is yellow grand | 80 | ?82 | ?84 | ?94 |
| Embodiment 17 | ?MAA | ?EGDMA | Ether is yellow grand | 80 | ?82 | ?86 | ?95 |
| Embodiment 18 | ?MAA | ?TRIM | Ring third is yellow grand | 83 | ?84 | ?87 | ?94 |
| Embodiment 19 | ?TFMAA | ?DVB | Nicoculsfuron | 83 | ?85 | ?87 | ?99 |
| Embodiment 20 | ?4-VP | ?EGDMA | Fluorine third is yellow grand | 81 | ?82 | ?86 | ?92 |
| Embodiment 21 | ?MAA | ?EGDMA | The pyridine miaow is yellow grand | 80 | ?81 | ?85 | ?91 |
| Embodiment 22 | ?MAA | ?EGDMA | The azoles ethyl methyl | 84 | ?86 | ?89 | ?98 |
Claims (10)
1, a kind of method for preparing sulfonylurea weedicide molecularly imprinted polymer, it comprises the steps:
(1) a kind of or two kinds of polymerization single polymerization monomers are mixed with linking agent, pore-creating agent, initiator and microsphere sulfonylurea herbicide standard specimen;
(2) above-mentioned reaction mixture is even, in container, adopt thermal initiation or light-initiated mode to carry out in-situ polymerization;
(3) polymkeric substance that polyreaction in (2) is obtained after finishing takes out from reactor, cleans with organic solvent earlier, uses the mixing solutions wash-out of organic solvent and acid again, to removing template molecule;
(4) polymkeric substance that will remove template molecule cleans to neutral with organic solvent, and is dry under the vacuum.
2, according to the process of claim 1 wherein, in step (1),
The weight ratio of a. described microsphere and described polymerization single polymerization monomer material is 0.001-10: 1;
B. the weight ratio of the material of linking agent and described polymerization single polymerization monomer is 0.5-20: 1;
C. the pore-creating agent consumption is the 30%-75% of reaction mixture volume content;
3, according to the method for claim 1 or 2, wherein, in step (2), the thermal booster reaction condition is that polymerization temperature is controlled under 60 ℃ of-90 ℃ of constant temperature and reacted 6-48 hour; The Photoinitiated reactions condition is, under 125w or the 150w high voltage mercury lamp polymerase 10 .5-48 hour;
4, according to arbitrary method of claim 1-3, wherein, in step (2), in-situ polymerization adopts one of following two kinds of modes: after 1) mixing, join in the reactor, and airtight behind the feeding nitrogen; 2) mix after, be added in the empty gc column tube preparation integral post.
5, according to arbitrary method of claim 1-4, wherein, described polymerization single polymerization monomer is selected from following: vinylformic acid, methacrylic acid, trifluoromethyl acrylate, methyl methacrylate, methacrylic acid hydroxyethyl ester methacrylic acid diethylamine ethyl ester, 2,6-diamino-pyridine, 4-vinylpridine, 2-vinyl pyridine, acrylamide, diacrylamine-2-methyl isophthalic acid-propanesulfonic acid, to Ethenylbenzene formic acid, to ethylbenzene acetate, methylene-succinic acid, 2-vinyl-4,6 diamino-s-triazine, 1-vinyl imidazole and N-vinyl-a-tetramethyleneimine.
6, according to arbitrary method of claim 1-5, wherein, described linking agent is selected from following: trimethoxy propane trimethyl acrylic ester, N, N-methylene diacrylamine, N, N-1,4-phenylene diacrylamine, 3,5-two (acrylamide) phenylformic acid, ethylene glycol dimethacrylate, Vinylstyrene, N, O-two acryloyls-L-phenylalaninol, pentaerythritol triacrylate, tetramethylol methane tetraacrylate.
7, according to arbitrary method of claim 1-6, wherein, described pore-creating agent is selected from methylene dichloride, chloroform, acetonitrile, methyl alcohol, Virahol, tetracol phenixin, heterogeneous ring compound acid amides or sulfone compound.
8, according to arbitrary method of claim 1-7, wherein, the coupling agent that adopts in thermal initiation in the step (2) or the light initiating polymerizing reaction is organic peroxy class or azo compound.
9, the method for the sulfonylurea herbicide in a kind of separation and purification environmental samples, it comprises the steps:
(5) molecularly imprinted polymer that will make by either party's method of claim 1-8 is filled into and makes the SPE post in the syringe, the extracting solution of environmental samples is carried out purification enrichment with this SPE post, remove the interfering substance of non-sulfonylurea with the organic solvent flushing, and then use the organic solvent wash-out, collect elution fraction.
10, a kind of method of measuring the sulfonylurea herbicide in the environmental samples, it comprises the steps:
(6) molecularly imprinted polymer that will make by either party's method of claim 1-8 is loaded in the gc column tube, obtain the molecular imprinting separator column, this chromatographic column is connected to the elutriant that in the liquid chromatographic system the arbitrary method by claim 1-8 is obtained detects.
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2004
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