CN1263777C - Molecular engram polyaromatics of organophosphorus parasiticide, method for preparation and application - Google Patents
Molecular engram polyaromatics of organophosphorus parasiticide, method for preparation and application Download PDFInfo
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- CN1263777C CN1263777C CN 200410102834 CN200410102834A CN1263777C CN 1263777 C CN1263777 C CN 1263777C CN 200410102834 CN200410102834 CN 200410102834 CN 200410102834 A CN200410102834 A CN 200410102834A CN 1263777 C CN1263777 C CN 1263777C
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Abstract
The present invention discloses a molecular blot polymer of organophosphorus parasiticide, a preparing method thereof and the application thereof. The molecular blot polymer provided by the present invention is prepared by the following steps that: 1) one or several kinds of polyreaction monomers, a crosslinking agent, a hole making agent initiator and one or theiof organophosphorus parasiticide are mixed; then, thermal-initiating polymerization or light-initiating polymerization is carried out; finally, a polymer containing the organophosphorus parasiticide is obtained; 2) the obtained polymer is cleaned until the polymer does not contain the organophosphorus parasiticide; then, the molecular blot polymer of organophosphorus parasiticide is obtained. The present invention uses organophosphorus parasiticide as mould-plate molecules for preparing and obtaining the molecular blot polymer of organophosphorus parasiticide; the molecular blot polymer has a strong ability of recognizing mould-plate molecules and has high selectivity and high sensitivity; the molecular blot polymer can be used for sieving, separating, enriching and purifying the organophosphorus insecticide in environment and biologic samples and can be also used for rapid detecting goal molecules.
Description
Technical field
The present invention relates to a kind of organophosphorus insecticides molecularly imprinted polymer and preparation method thereof and application, more particularly, relate to a kind of molecularly imprinted polymer that organophosphorus insecticides is had singleness identity and preparation method thereof, and the application in the organophosphorus insecticides of this molecularly imprinted polymer in separation and purification and mensuration biology or environmental samples.
Background technology
Organophosphorus pesticide is to use the agricultural chemicals that kind is maximum, turnout is maximum at present, and residual the most serious in agricultural-food, its environmental pollution and food-safety problem have also caused people's generally attention.Organophosphorus pesticide (organophosphorus compounds) forms the phosphorylated Pseudocholinesterase with Pseudocholinesterase in vivo; cholinesterase activity is suppressed; the effect that makes its unable to get up decompose vagusstoff causes that vagusstoff is excessive in the tissue accumulates, and causes muscarinic, nicotine sample and central nervous system symptom.So removing organic phosphorus pesticide residual can cause nervous dysfunction in the agricultural-food such as fruits and vegetables, a series of neurotoxicity performances appear, and weight person can be poisoned to death.Therefore, organophosphorus in environment and the agricultural-food residual being extracted, purify, separate, detect is crucial task.
At present, mostly the organic phosphorous insecticide extracting method is with the organic solvent extraction sample both at home and abroad, and after column chromatography, this method need expend a large amount of solvents and time, and emulsion is more serious after liquid liquid distributes; For the bigger agricultural chemicals of polarity, as also loss easily such as acephatemet, SD-1750, it is not high to measure accuracy.In addition, gone out a lot of agricultural chemicals recently and extracted new technologies, as accelerated solvent extraction, solid-phase microextraction, supercritical fluid extraction, purging distillation technique etc., but these methods generally need special equipment, and the cost of determination height is difficult to apply.Common solid phase extraction techniques is the agricultural chemicals pretreatment technology that is generally adopted in recent years because of it consumes solvent few, convenient and swift, but selectivity ratios is relatively poor, and some agricultural chemicals rate of recovery is lower.
Summary of the invention
The purpose of this invention is to provide a kind of molecularly imprinted polymer that organic phosphorous insecticide is had singleness identity and preparation method thereof.
Organic phosphorous insecticide molecularly imprinted polymer provided by the present invention, preparation as follows: 1) one or more polymerization reaction monomers, linking agent, pore-creating agent, initiator and one or more organic phosphorous insecticides are mixed, carry out thermal-initiated polymerization or light initiating polymerizing reaction then, obtain containing the organic phosphorous insecticide polymkeric substance; 2) resulting polymers is cleaned to not containing organic phosphorous insecticide, obtain described organic phosphorous insecticide molecularly imprinted polymer.
Wherein, described polymerization reaction monomer has multiple choices, 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, as, vinylformic acid (AA), methacrylic acid (MAA), trifluoromethyl acrylate (TFMAA), methyl methacrylate (MMA), 4-vinylpridine (4-VP), 2-vinyl pyridine (2-VP) etc.More preferably, methacrylic acid (MAA), 2-vinyl-4,6 diamino-s-triazine (VDTA) and 4-vinylpridine (4-VP).
Linking agent commonly used, 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 trimethylolpropane trimethacrylate (TRIM).
Pore-creating agent described in the present invention can adopt methylene dichloride, chloroform, acetonitrile, methyl alcohol, Virahol, tetracol phenixin and heterogeneous ring compound acid amides or sulfone compound.Preferably, acetonitrile and chloroform.
In the present invention, described polymerization reaction monomer is 3-10 with described organic phosphorous insecticide amount of substance ratio: 1; Described linking agent is 3-50 with described organic phosphorous insecticide amount of substance ratio: 1; Described linking agent is 1-20 with the amount of substance ratio of described polymerization reaction monomer: 1; Described pore-creating agent consumption is the 50%-80% of reaction mixture cumulative volume.
Initiator used among the present invention generally adopts organic peroxy class or azo compound, is preferably Diisopropyl azodicarboxylate, and its consumption can be the conventional amount used of the required initiator of polyreaction.
Molecularly imprinted polymer of the present invention can adopt thermal-initiated polymerization, also can adopt light initiation polymerization, and wherein the reaction conditions of thermal-initiated polymerization is to react 6-72 hour down at 60 ℃-80 ℃; The reaction conditions of light initiation polymerization is under the 190-1000nm wavelength polyreaction 12-36 hour, and temperature of reaction is 5-10 ℃.
The mode of polyreaction can adopt following two kinds: after 1) reactant being mixed, join in container such as the ampere bottle, feed 3-5 minute nitrogen (under the liquid level) the airtight polymerization in back; Perhaps 2) reactant is mixed after, be added in the empty gc column tube or syringe tube, directly be prepared into integral post.
After polyreaction was finished, resulting polymkeric substance also had the template molecule organic phosphorous insecticide, it need be cleaned out could use.Generally can adopt following process to carry out: resulting polymers is ground, sieves the back earlier with alcoholic solvent immersion, cleaning, carry out wash-out respectively with alcohol and organic acid mixing solutions, mixing solutions pure and triethylamine then, in elutriant, detect less than organic phosphorous insecticide.
Wherein, alcohol commonly used is methyl alcohol, and organic acid commonly used is an acetate; Alcohol is 1000-10 with the organic acid volume ratio in described alcohol and the organic acid mixing solutions: 1; Alcohol is 1000-10 with the volume ratio of triethylamine in the mixing solutions of described alcohol and triethylamine: 1.
Almost existing organic phosphorous insecticide, as, acephatemet (Methamidaphos), glyphosate (Glyphosate), Chlorpyrifos 94 (Chlorpyrifos), SD-1750 (Dichlorvos), Phosdrin (Mevinphos), phorate (Phorate), Rogor (Dimethoate), diazinon (Diazinon), paraoxon (Paraoxon), thiophos (Parathion), chlorpyrifos_methyl (Chlorpyrifos Methyl), Malathion (Malathion), Volaton (Phoxim), R-1504 (Imidan), acephate (Acephate), parathion-methyl (ParathionMethyl), fenitrothion 95 (Fenitrothion), Trichlorphon (Trichlorfon), omethoate (Omethoate), phosphamidon (Phosphamidon), Tiguvon (Fenthion), methidathion (Methidathion), Propetamphos (Propetamphos), pririmiphos_methyl (Pirimiphos Methyl), isofenphos (Isofenphos), Resitox (Quinalphos), Phosalone (Phosalone) etc. all can adopt the inventive method to prepare its molecularly imprinted polymer.
Another object of the present invention provides the purposes of organic phosphorous insecticide molecularly imprinted polymer provided by the present invention.
Organic phosphorous insecticide molecularly imprinted polymer provided by the present invention can be used as the Solid-Phase Extraction material, be used for organic phosphorous insecticide in the separation and purification environmental samples, this method comprises the steps: described organic phosphorous insecticide molecularly imprinted polymer dress post (SPE post), then sample solution is crossed post, wash-out behind the decon, collect described organic phosphorous insecticide.
Wherein, can to select volume ratio usually for use be 100-0.1 to the used eluent of decon: the mixing solutions of 1 methyl alcohol or acetonitrile and trichloromethane; Described wash-out, the used eluent of the described organic phosphorous insecticide of collection are that volume ratio is 1000-1: 500-10: the mixing solutions of 1 methyl alcohol or acetonitrile and water, acetate, or volume ratio is 1000-10: the mixing solutions of 1 alcohol or acetonitrile and acetate.
Simultaneously, organic phosphorous insecticide molecularly imprinted polymer provided by the present invention also can be used as the filler of liquid-phase chromatographic column, can adopt liquid phase chromatography to come organic phosphorous insecticide in the environmental samples is detected.
The present invention is template molecule with the organic phosphorous insecticide, prepare the organic phosphorous insecticide molecularly imprinted polymer, this molecularly imprinted polymer is strong to the recognition capability of template molecule, has very high selectivity and sensitivity, can be used for that organic phosphorous insecticide to environment and biological specimen screens, separation, enrichment and purification, also can carry out rapid determination to target molecule.
Embodiment
The molecularly imprinted polymer MIP1 of embodiment 1, preparation glyphosate
Take by weighing 0.507g template molecule glyphosate, 1.0320g reaction monomers methacrylic acid (MAA), 11.890g linking agent ethylene glycol dimethacrylate (EGDMA), 0.0750g initiator Diisopropyl azodicarboxylate, 25ml pore-creating agent chloroform, mix, pack in the 40ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP1 of glyphosate.
The molecularly imprinted polymer MIP2 of embodiment 2, preparation Chlorpyrifos 94
Take by weighing 0.3505g template molecule Chlorpyrifos 94,0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.0100g initiator Diisopropyl azodicarboxylate, 10ml pore-creating agent methylene dichloride, mix, pack in the 20ml ampere bottle, fed nitrogen 5 minutes, sealing, polymerization under 365nm wavelength ultraviolet lamp, temperature is controlled at 8 ℃ with cooling bath, reacts 24 hours.
After treating polymerization, polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP2 of Chlorpyrifos 94.
The molecularly imprinted polymer MIP3 of embodiment 3, preparation SD-1750
Take by weighing 0.2206g template molecule SD-1750,0.4305g reaction monomers methacrylic acid (MAA), 3.9640g linking agent ethylene glycol dimethacrylate (EGDMA), 0.0420g 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.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP3 of SD-1750.
The molecularly imprinted polymer MIP4 of embodiment 4, preparation Phosdrin
Take by weighing 0.2240g template molecule Phosdrin, 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.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP4 of Phosdrin.
The molecularly imprinted polymer MIP5 of embodiment 5, preparation phorate
Take by weighing 0.261g template molecule phorate, 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 60 ℃ of baking ovens.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP5 of phorate.
The molecularly imprinted polymer MIP6 of embodiment 6, preparation Rogor
Take by weighing 0.229g template molecule Rogor, 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, in the 20ml ampere bottle of packing into, fed nitrogen 5 minutes, sealing, polymerization under 365nm wavelength ultraviolet lamp, temperature is controlled at 8 ℃ with cooling bath, reacts 24 hours.
After treating polymerization, polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP6 of Rogor.
The molecularly imprinted polymer MIP7 of embodiment 7, preparation diazinon
Take by weighing 0.3040g template molecule diazinon, 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 24 hours in 60 ℃ of baking ovens.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP7 of diazinon.
The molecularly imprinted polymer MIP8 of embodiment 8, preparation paraoxon
Take by weighing 0.2530g template molecule paraoxon, 0.5750g reaction monomers 4-vinylpridine (4-VP), 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.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP8 of paraoxon.
The molecularly imprinted polymer MIP9 of embodiment 9, preparation thiophos
Take by weighing 0.2490g template molecule thiophos, 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.
After the polymerization polymer monolith is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP9 of thiophos.
The molecularly imprinted polymer MIP10 of embodiment 10, preparation chlorpyrifos_methyl
Take by weighing 0.0324g template molecule chlorpyrifos_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.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP10 of chlorpyrifos_methyl.
The molecularly imprinted polymer MIP11 of embodiment 11, preparation Malathion
Take by weighing 0.3300g template molecule Malathion, 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.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP11 of Malathion.
The molecularly imprinted polymer MIP12 of embodiment 12, preparation Volaton
Take by weighing 0.2510g template molecule Volaton, 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.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP12 of Volaton.
The molecularly imprinted polymer MIP13 of embodiment 13, preparation acephate
Take by weighing 0.3160g template molecule acephate, 0.4205g reaction monomers methacrylic acid (MAA), 3.050g linking agent ethylene glycol dimethacrylate (EGDMA), 0.0511g 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.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP13 of acephate.
The molecularly imprinted polymer MIP14 of embodiment 14, preparation parathion-methyl
Take by weighing 0.2635g template molecule parathion-methyl, 0.4305g reaction monomers methacrylic acid (MAA), 6.160g linking agent trimethoxy propane trimethyl acrylic ester (TRIM), 0.0511g 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.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP14 of parathion-methyl.
The molecularly imprinted polymer MIP15 of embodiment 15, preparation Trichlorphon
Take by weighing 0.2980g template molecule Trichlorphon, 0.5750g reaction monomers 4-vinylpridine (4-VP), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.06211g 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.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP15 of Trichlorphon.
The molecularly imprinted polymer MIP16 of embodiment 16, preparation omethoate
Take by weighing 0.2280g template molecule omethoate, 0.4305g reaction monomers methacrylic acid (MAA), 3.9600g linking agent ethylene glycol dimethacrylate (EGDMA), 0.0521g 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.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer (MIP) of omethoate.
The molecularly imprinted polymer MIP17 of embodiment 17, preparation parathion-methyl
Take by weighing 0.2635g template molecule parathion-methyl, 0.8610g reaction monomers methacrylic acid (MAA), 15.40g linking agent trimethoxy propane trimethyl acrylic ester (TRIM), 0.0511g initiator Diisopropyl azodicarboxylate, 20ml pore-creating agent methylene dichloride, mix, pack in the 40ml ampere bottle, fed nitrogen 5 minutes, sealing, reaction is 48 hours in 70 ℃ of baking ovens.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP17 of parathion-methyl.
The molecularly imprinted polymer MIP18 of embodiment 18, preparation parathion-methyl
Take by weighing 0.2635g template molecule parathion-methyl, 0.2583g reaction monomers methacrylic acid (MAA), 1.540g linking agent trimethoxy propane trimethyl acrylic ester (TRIM), 0.0511g 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.
After the polymerization polymkeric substance is taken out, grind, soak with methyl alcohol, drying is sieved.Clean with methyl alcohol 100ml earlier, use 4 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of acetate (volume ratio 8.5: 1.5), use 2 * 100ml methyl alcohol again: the mixing solutions ultrasonic cleaning of triethylamine (volume ratio 99: 1), use 5-8 * 100ml washed with methanol at last, every part elutriant concentrates, and high performance liquid chromatography ultraviolet detection sample introduction is to detecting less than template molecule in the maximum absorption wave strong point, drying obtains the molecularly imprinted polymer MIP18 of parathion-methyl.
Embodiment 19, the application prepared molecularly imprinted polymer solid-phase extraction column of the present invention (MIP-SPE) reclaim the organic phosphorous insecticide in vegetables, the soil
Take by weighing 5g vegetables dummy, add 10ml acetone, vibrated 1 hour, cross anhydrous sodium sulphate and anhydrate, centrifuging and taking supernatant liquor 2ml adds quantitative organic phosphorous insecticide to be measured, treats upper prop;
Take by weighing 5g soil dummy, add 10ml acetone and 2ml water, vibrated 1 hour, cross anhydrous sodium sulphate and anhydrate, centrifuging and taking supernatant liquor 2ml adds quantitative organic phosphorous insecticide to be measured, treats upper prop;
Respectively each molecularly imprinted polymer is filled in the 2ml glass syringe and is prepared as solid-phase extraction column (MIP-SPE post) certainly, the post height is 5 centimetres, and column diameter is 1.0-1.2 centimetre; Use earlier 5ml methyl alcohol, the drip washing of 5ml acetone respectively, then 2ml vegetables extracting solution (or soil extract) is gone up sample SPE post, use earlier 2ml methyl alcohol: trichloromethane (volume ratio is 1: 1) flush away impurity, use 1ml methyl alcohol and 1ml methyl alcohol then respectively: acetate (volume ratio is 9: 1) wash-out SPE post, collect, concentrate, detect purpose organic phosphorous insecticide component to be measured, calculate the rate of recovery of SPE post to the purpose component, the result is as shown in table 1.
The prepared rate of recovery that obtains 16 kinds of different molecularly imprinted polymers to purpose component in vegetables extracting solution, the soil extract of embodiment 1-16, the result shows, the differing molecular imprinted polymer to its separately the rate of recovery of template molecule illustrate that this molecularly imprinted polymer is higher to its recognition capability mostly between 80%-105%; Simultaneously, with MIP9 the recovery result of different agricultural chemicals is shown that the rate of recovery of this molecularly imprinted polymer pair and the compound of template molecule structure similar has certain adsorptive power also than higher by MIP1; But the compound adsorptive power bigger to textural difference obviously reduces.In addition, the mol ratio of monomer and template molecule is 10: 1 among the MIP17, the mol ratio of linking agent and template molecule is about 40: 1, the mol ratio of monomer and template molecule is 3: 1 among the MIP18, the mol ratio of linking agent and template molecule is about 5: 1, in these two tests since the ratio of template and monomer and linking agent in MIP17 than higher, and it is lower among the MIP18, the formation of void structure rationally in the polymkeric substance has been produced certain influence, so its molecularly imprinted polymer slightly reduces the rate of recovery of template molecule.
The SPE post of table 1 differing molecular imprinted polymer is to the rate of recovery of different agricultural chemicals
| Molecularly imprinted polymer (MIP) code name | Monomer | Linking agent | Template molecule | Measure agricultural chemicals | The rate of recovery in the vegetables (%) | The rate of recovery in the soil (%) |
| MIP1 | MAA | EGDMA | Glyphosate | Glyphosate | 87-103 | 91-105 |
| Glyphosate | Acephate | 63-88 | 70-92 | |||
| Glyphosate | Thiophos | 25-48 | 34-53 | |||
| MIP2 | MAA | EGDMA | Chlorpyrifos 94 | Chlorpyrifos 94 | 93-105 | 85-109 |
| MIP3 | MAA | EGDMA | SD-1750 | SD-1750 | 84-107 | 93-108 |
| MIP4 | MAA | EGDMA | Phosdrin | Phosdrin | 88-102 | 83-103 |
| MIP5 | MAA | EGDMA | Phorate | Phorate | 80-103 | 82-103 |
| MIP6 | VDTA | EGDMA | Rogor | Rogor | 79-101 | 80-99 |
| MIP7 | MAA | EGDMA | Diazinon | Diazinon | 85-115 | 83-103 |
| MIP8 | 4-VP | EGDMA | Paraoxon | Paraoxon | 84-107 | 94-110 |
| MIP9 | MAA | EGDMA | Thiophos | Thiophos | 82-102 | 79-103 |
| Thiophos | Parathion-methyl | 71-99 | 73-98 | |||
| Thiophos | Glyphosate | 36-61 | 45-57 | |||
| MIP10 | MAA | EGDMA | Chlorpyrifos_methyl | Chlorpyrifos_methyl | 83-103 | 81-103 |
| MIP11 | MAA | EGDMA | The Malathion | The Malathion | 82-103 | 95-102 |
| MIP12 | MAA | EGDMA | Volaton | Volaton | 80-100 | 80-105 |
| MIP13 | MAA | EGDMA | Acephate | Acephate | 81-112 | 84-103 |
| MIP14 | MAA | TRIM | Parathion-methyl | Parathion-methyl | 83-103 | 88-105 |
| MIP15 | 4-VP | EGDMA | Trichlorphon | Trichlorphon | 79-103 | 80-102 |
| MIP16 | MAA | EGDMA | Omethoate | Omethoate | 81-103 | 83-105 |
| MIP17 | MAA | TRIM | Parathion-methyl | Parathion-methyl | 60-81 | 57-79 |
| MIP18 | MAA | TRIM | Parathion-methyl | Parathion-methyl | 73-83 | 68-91 |
Embodiment 20, use of the reservation of high-performance liquid chromatogram determination differing molecular imprinted polymer of the present invention to template molecule
Gained molecularly imprinted polymer of the present invention is filled in the 150mm*4.6mm ID gc column tube, is connected on the high performance liquid chromatograph that has UV-detector, each template molecule is measured the retention time of molecules of interest on chromatographic column with the concentration sample introduction of 1mg/L.With same specification C18 post (Kromsil is available from Beijing Analytical Instrument Factory) post in contrast, adopt identical condition to measure the retention time of molecules of interest on the contrast post.The calculation template molecule is by the ratio of MIP post with the retention time of contrast post.
The various objectives molecule is listed in table 2 at 18 kinds of differing molecular imprinted polymer posts of embodiment of the invention 1-18 gained with the ratio that contrasts the retention time on the post, the MIP post to about 1-4 of the reservation right and wrong MIP post of template molecule doubly, show the MIP post to the adsorptive power of template molecule apparently higher than non-MIP post.
Molecularly imprinted polymer (MIP) stationary phase is to the retention properties of different compounds under the table 2.HPLC condition
| The molecularly imprinted polymer code name | Monomer | Linking agent | Template molecule | Polymkeric substance median size (μ m) | Template molecule is by the ratio of MIP post with the retention time of contrast post |
| MIP1 | MAA | EGDMA | Glyphosate | 71 | 3.0 |
| MIP2 | MAA | EGDMA | Chlorpyrifos 94 | 68 | 2.2 |
| MIP3 | MAA | EGDMA | SD-1750 | 97 | 2.8 |
| MIP4 | MAA | EGDMA | Phosdrin | 60 | 3.1 |
| MIP5 | MAA | EGDMA | Phorate | 86 | 2.6 |
| MIP6 | VDTA | EGDMA | Rogor | 55 | 1.9 |
| MIP7 | MAA | EGDMA | Diazinon | 82 | 4.2 |
| MIP8 | 4-VP | EGDMA | Paraoxon | 76 | 2.9 |
| MIP9 | MAA | EGDMA | Thiophos | 56 | 3.6 |
| MIP10 | MAA | EGDMA | Chlorpyrifos_methyl | 107 | 4.1 |
| MIP11 | MAA | EGDMA | The Malathion | 69 | 2.8 |
| MIP12 | MAA | EGDMA | Volaton | 67 | 2.6 |
| MIP13 | MAA | EGDMA | Acephate | 72 | 2.1 |
| MIP14 | MAA | TRIM | Parathion-methyl | 96 | 3.2 |
| MIP15 | 4-VP | EGDMA | Trichlorphon | 72 | 3.5 |
| MIP16 | MAA | EGDMA | Omethoate | 96 | 4.0 |
| MIP17 | MAA | TRIM | Parathion-methyl | 72 | 2.1 |
| MIP18 | MAA | TRIM | Parathion-methyl | 80 | 1.5 |
Embodiment 21, differing molecular imprinted polymer (MIP) material are investigated the absorption property of target molecule
1g molecularly imprinted polymer of the present invention is immersed in the molecules of interest solution that 5ml concentration is 50ug/ml, measure molecules of interest concentration in the solution with HPLC at 1h, 2h, 6h and 24h respectively, calculate the absorption ratio of molecularly imprinted polymer different time, the results are shown in table 3 target molecule.The result shows that with the prolongation of adsorption time, MIP increases gradually to the adsorptive capacity of target molecule; After 2 hours, gather way and ease up.In addition, relative other MIP of the absorption property of MIP17 and MIP18 are low slightly.
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 |
| MIP1 | MAA | EGDMA | Glyphosate | 69 | 75 | 83 | 93 |
| MIP2 | MAA | EGDMA | Chlorpyrifos 94 | 80 | 88 | 94 | 91 |
| MIP3 | MAA | EGDMA | SD-1750 | 66 | 78 | 90 | 98 |
| MIP4 | MAA | EGDMA | Phosdrin | 76 | 81 | 85 | 89 |
| MIP5 | MAA | EGDMA | Phorate | 74 | 82 | 89 | 94 |
| MIP6 | VDTA | EGDMA | Rogor | 73 | 80 | 86 | 93 |
| MIP7 | MAA | EGDMA | Diazinon | 82 | 83 | 88 | 89 |
| MIP8 | 4-VP | EGDMA | Paraoxon | 69 | 75 | 86 | 94 |
| MIP9 | MAA | EGDMA | Thiophos | 71 | 78 | 83 | 95 |
| MIP10 | MAA | EGDMA | Chlorpyrifos_methyl | 80 | 82 | 88 | 94 |
| MIP11 | MAA | EGDMA | The Malathion | 82 | 90 | 93 | 93 |
| MIP12 | MAA | EGDMA | Volaton | 81 | 82 | 85 | 95 |
| MIP13 | MAA | EGDMA | Acephate | 82 | 83 | 86 | 97 |
| MIP14 | MAA | TRIM | Parathion-methyl | 76 | 85 | 88 | 93 |
| MIP15 | 4-VP | EGDMA | Trichlorphon | 81 | 82 | 85 | 90 |
| MIP16 | MAA | EGDMA | Omethoate | 80 | 82 | 84 | 94 |
| MIP17 | MAA | TRIM | Parathion-methyl | 46 | 60 | 71 | 79 |
| MIP18 | MAA | TRIM | Parathion-methyl | 52 | 59 | 64 | 76 |
Claims (21)
1, a kind of organic phosphorous insecticide molecularly imprinted polymer, preparation as follows: 1) one or more polymerization reaction monomers, linking agent, pore-creating agent, initiator and one or more organic phosphorous insecticides are mixed, carry out thermal-initiated polymerization or light initiating polymerizing reaction then, obtain containing the organic phosphorous insecticide polymkeric substance; Described polymerization reaction monomer is vinylformic acid, methacrylic acid, 2-vinyl pyridine, 2-vinyl-4,6-diamino-s-triazine, methyl methacrylate, methacrylic acid hydroxyethyl ester, methacrylic diethylammonium salt ethyl ester, 2,6-diamino-pyridine, 4-vinylpridine, acrylamide, diacrylamine-2-methyl isophthalic acid-propanesulfonic acid, to Ethenylbenzene formic acid, to ethylbenzene acetate or methylene-succinic acid or 1-vinyl imidazole; Described polymerization reaction monomer is 3-10 with described organic phosphorous insecticide amount of substance ratio: 1; Described linking agent is 3-50 with described organic phosphorous insecticide amount of substance ratio: 1; Described linking agent is 1-20 with the amount of substance ratio of described polymerization reaction monomer: 1; Described pore-creating agent consumption is the 50%-80% of reaction mixture cumulative volume; 2) resulting polymers is cleaned to not containing organic phosphorous insecticide, obtain described organic phosphorous insecticide molecularly imprinted polymer.
2, molecularly imprinted polymer according to claim 1 is characterized in that: described polymerization reaction monomer is vinylformic acid, methacrylic acid, 4-vinylpridine, 2-vinyl-4,6-diamino-s-triazine or 2-vinyl pyridine.
3, molecularly imprinted polymer according to claim 2 is characterized in that: described polymerization reaction monomer is methacrylic acid, 4-vinylpridine or 2-vinyl-4,6-diamino-s-triazine.
4, molecularly imprinted polymer according to claim 1, it is characterized in that: described linking agent is trimethylolpropane trimethacrylate, 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 or tetramethylol methane tetraacrylate.
5, molecularly imprinted polymer according to claim 4 is characterized in that: described linking agent is ethylene glycol dimethacrylate, Vinylstyrene or trimethylolpropane trimethacrylate.
6, molecularly imprinted polymer according to claim 1 is characterized in that: described pore-creating agent is methylene dichloride, chloroform, acetonitrile, methyl alcohol, Virahol, tetracol phenixin, heterogeneous ring compound acid amides or sulphones.
7, molecularly imprinted polymer according to claim 6 is characterized in that: described pore-creating agent is acetonitrile or chloroform.
8, the method for preparing the described organic phosphorous insecticide molecularly imprinted polymer of claim 1, comprise the steps: 1) one or more polymerization reaction monomers, linking agent, pore-creating agent, initiator and one or more organic phosphorous insecticides are mixed, carry out thermal-initiated polymerization or light initiating polymerizing reaction then, obtain containing the organic phosphorous insecticide polymkeric substance; Described polymerization reaction monomer is vinylformic acid, methacrylic acid, 2-vinyl pyridine, 2-vinyl-4,6-diamino-s-triazine, methyl methacrylate, methacrylic acid hydroxyethyl ester, methacrylic diethylammonium salt ethyl ester, 2,6-diamino-pyridine, 4-vinylpridine, acrylamide, diacrylamine-2-methyl isophthalic acid-propanesulfonic acid, to Ethenylbenzene formic acid, to ethylbenzene acetate or methylene-succinic acid or 1-vinyl imidazole; Described polymerization reaction monomer is 3-10 with described organic phosphorous insecticide amount of substance ratio: 1; Described linking agent is 3-50 with described organic phosphorous insecticide amount of substance ratio: 1; Described linking agent is 1-20 with the amount of substance ratio of described polymerization reaction monomer: 1; Described pore-creating agent consumption is the 50%-80% of reaction mixture cumulative volume; 2) resulting polymers is cleaned to not containing organic phosphorous insecticide, obtain described organic phosphorous insecticide molecularly imprinted polymer.
9, method according to claim 8 is characterized in that: described polymerization reaction monomer is vinylformic acid, methacrylic acid, 4-vinylpridine, 2-vinyl-4,6 diamino-s-triazine or 2-vinyl pyridine.
10, method according to claim 8, it is characterized in that: described linking agent is trimethylolpropane trimethacrylate, 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 or tetramethylol methane tetraacrylate.
11, method according to claim 10 is characterized in that: described linking agent is ethylene glycol dimethacrylate, Vinylstyrene or trimethylolpropane trimethacrylate.
12, method according to claim 8 is characterized in that: described pore-creating agent is selected from methylene dichloride, chloroform, acetonitrile, methyl alcohol, Virahol, tetracol phenixin, heterogeneous ring compound acid amides or sulphones.
13, method according to claim 12 is characterized in that: described pore-creating agent is acetonitrile or chloroform.
14, according to Claim 8 arbitrary-13 described method is characterized in that: described initiator is organo-peroxide or azo-compound.
15, method according to claim 14 is characterized in that: described initiator is a Diisopropyl azodicarboxylate.
16, according to Claim 8 arbitrary-13 described method is characterized in that: the reaction conditions of the described thermal-initiated polymerization of step 1) is for reacting 6-72 hour down at 60 ℃-80 ℃; The reaction conditions of the described light initiation polymerization of step 1) is under the 190-1000nm wavelength polyreaction 12-36 hour, and temperature of reaction is 5-10 ℃.
17, according to Claim 8 arbitrary-13 described method, it is characterized in that: step 2) described resulting polymers is cleaned to not containing organic phosphorous insecticide carry out according to the following procedure: the resulting polymers back of grinding, sieve soaked, cleaned with alcoholic solvent earlier, carry out wash-out respectively with alcohol and organic acid mixing solutions, mixing solutions pure and triethylamine then, in elutriant, do not contain organic phosphorous insecticide.
18, method according to claim 17 is characterized in that: described alcohol is methyl alcohol; Described organic acid is an acetate; Alcohol is 1000-10 with the organic acid volume ratio in described alcohol and the organic acid mixing solutions: 1; Alcohol is 1000-10 with the volume ratio of triethylamine in the mixing solutions of described alcohol and triethylamine: 1.
19, application rights requires organic phosphorous insecticide method in the arbitrary described organic phosphorous insecticide molecularly imprinted polymer separation and purification sample solution of 1-7, comprise the steps: described organic phosphorous insecticide molecularly imprinted polymer dress post, then sample solution is crossed post, wash-out behind the decon, collect described organic phosphorous insecticide.
20, method according to claim 19 is characterized in that: the used eluent of decon is that volume ratio is 100-0.1: the mixing solutions of 1 methyl alcohol or acetonitrile and trichloromethane; Described wash-out, the used eluent of the described organic phosphorous insecticide of collection are that volume ratio is 1000-1: 500-10: the mixing solutions of 1 methyl alcohol or acetonitrile and water, acetate, or volume ratio is 1000-10: the mixing solutions of 1 alcohol or acetonitrile and acetate.
21, application rights requires organic phosphorous insecticide method in the arbitrary described organic phosphorous insecticide molecularly imprinted polymer working sample solution of 1-7, be to adopt organic phosphorous insecticide in the liquid chromatography for measuring sample solution, it is characterized in that: the filler of the used liquid-phase chromatographic column of described liquid phase chromatography is described organic phosphorous insecticide molecularly imprinted polymer.
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| CN101942062B (en) * | 2010-08-09 | 2013-07-17 | 南开大学 | Surface imprinted polymer for catalyzing degradation of organophosphorus pesticide and preparation method thereof |
| CN102675531A (en) * | 2011-03-07 | 2012-09-19 | 孟子晖 | Molecularly-imprinted photonic crystal for detecting organophosphorus toxicants |
| CN102507820B (en) * | 2011-10-18 | 2013-10-16 | 山东农业大学 | Method for detecting trichlorfon and monocrotophos |
| CN102617788A (en) * | 2012-03-29 | 2012-08-01 | 常熟市海虞茶叶有限公司 | Salinomycin molecularly imprinted polymer and preparation method thereof |
| CN102645471A (en) * | 2012-03-31 | 2012-08-22 | 无锡百灵传感技术有限公司 | Preparation method of electrochemical sensor for detecting trichlorfon |
| CN102698723A (en) * | 2012-05-28 | 2012-10-03 | 新疆生产建设兵团公安局 | Preparation method and application of magnetic organophosphorus pesticide molecular imprinting nanometer microspheres |
| CN102796276A (en) * | 2012-08-29 | 2012-11-28 | 江苏大学 | Preparation method of carbaryl molecular imprinting composite membrane |
| CN103399099B (en) * | 2013-08-14 | 2014-08-06 | 山东农业大学 | Method for detecting nine organophosphorus pesticides simultaneously |
| CN112126013B (en) * | 2020-09-14 | 2022-06-10 | 天津科技大学 | Bis (p-nitrophenol) phosphate imprinted polymer and preparation method thereof |
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