CN101632918A - Grafting fiber material with adsorptive action and use method thereof - Google Patents
Grafting fiber material with adsorptive action and use method thereof Download PDFInfo
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Abstract
The invention relates to a grafting fiber material with adsorptive action, which comprises the materials of: 1) a fiber body and 2) a grafting material on the fiber body, wherein the fiber body is polyethylene, polypropylene or a copolymer of the two; the grafting material is fatty acid ester, fatty acid amide, the mixture of the fatty acid ester and the fatty acid amide, or a polymer of the fatty acid ester and the fatty acid amide; and the grafting material accounts for 1 to 35 percent of the entire fiber material in percentage by weight. The grafting fiber material can perform the process of solid-phase extraction stably and quickly, avoids the pollutions to samples, has a quick mass transfer velocity, can use a large-aperture (1 to 100 microns) film made from a non-porous fiber material to accelerate the processing of the samples, and avoids the pollution caused by fine particle falling; and simultaneously, the application of a grafting technique ensures the sampling volume of the samples. The grafting fiber material can be applied to extraction and purification of sample directly introduced in liquid phase chromatography or mass spectrometric analysis.
Description
Technical field
The present invention relates to a kind of fibrous material and using method thereof, especially relate to a kind of have adsorbing graft fibres material and using method thereof.
Background technology
The detection of chemistry and biotic component becomes and the closely-related content of people's daily life gradually in human body, food and the environment.This comprises that the patient takes medicine the back medicine in the mensuration of blood level, the mensuration of metabolin in the urine; The mensuration (as malachite green, tonyred) of residual or other harmful substance of food middle peasant, the mensuration of nutriment; The mensuration of harmful substance in the water and air.No matter all above testing processes are to use which kind of means, and great majority will pass through sample extraction, the process of enrichment and purification earlier.Film extraction and be comparatively leading technical products in this field in the world at present based on the SPME of glass fibre has the advantages that program is simple, efficient is high, highly sensitive.But present SPME only can be used for the gas-chromatography check, has limited its range of application.Aspect environmental analysis, needs are done further processing and analysis after a large amount of soil samples, water sample and air sample are delivered to the laboratory at present, not only need long period and higher expense, and impact analysis result's reliability and reproduction type in addition.
The spe membrane that present SPME is used is that the particulate with bonded silica gel or high polymer sorbing material is fixed on the film.This material is widely used in the analytical method of EPA.Major vendor has 3M in the world, JT Baker and WATERS etc.; The major defect of this product comprises:
1) because sorbing material particle diameter less (to obtain mass transfer velocity faster) requires membrane pore size less (3-10um), cause thickness or dirtier sample to stop up film easily;
2) granule comes off from film easily, pollutes the sample of collecting;
3) although use granule to accelerate mass transfer velocity, its absorption and desorption rate remain the principal element that sample and elution speed are gone up in restriction, make the extraction required time further to shorten.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of adsorbing graft fibres material that has; This material can overcome above shortcoming, thereby guarantees stable and SPE process fast and the pollution of avoiding sample; Because this material mainly reaches absorption and the purpose of separating by the grafting surface, so this material has mass transfer velocity faster; Simultaneously, because there is not the restriction of particulate, can use bigger membrane pore size (1-100 μ m) to quicken the processing of sample, the pollution of having avoided particulate to come off and cause.That is to say that this material can be used for the sample extraction and the purification of liquid chromatogram or mass spectral analysis direct injected.
Another technical problem that the present invention will solve provides a kind of use and has the method that adsorbing graft fibres material carries out SPE; Simple, the convenient and reliable on-the-spot sample pre-treatments of this method after the preliminary enrichment of sample purified, is adsorbed/is stored in certain material easy to carry and transport, afterwards again easily direct injected analyze the result to required analytical instrument.
For solving the problems of the technologies described above, the present invention is a kind of to have adsorbing graft fibres material, and it comprises following raw material:
1) fiber bodies;
2) graft materials on the fiber bodies;
Described fiber bodies is polyethylene, polypropylene or the copolymer of the two;
Described graft materials is the polymer of fatty acid ester, fatty acid amide, fatty acid ester and fatty acid amide or the mixture of fatty acid ester and fatty acid amide;
The percentage by weight that described graft materials accounts for whole fibrous material is 1～35%.
Further improved technical scheme, described graft fibres diameter is between the 1-100 micron.
Further improved technical scheme, described fatty acid ester has following general formula:
——CH
2-CH
2-COOR
Described R is the straight chained alkyl that contains 8-20 carbon.
Further improved technical scheme, described fatty acid amide has following general formula:
---CH
2-CH
2-COONHR or
Described R is the straight chained alkyl that contains 8-20 carbon; Described R ' is for containing the straight chained alkyl of 1-20 carbon.
Further improved technical scheme, described graft materials are polyacrylate, polyacrylamide or the copolymer of the two.
Further improved technical scheme, the alkoxyl in the described polyacrylate are the alkoxyl that contains 8-20 carbon, and the amido in the described polyacrylamide is the fatty amido that contains 8-20 carbon.
For solving above-mentioned second technical problem, a kind of use of the present invention has the method that adsorbing graft fibres material carries out SPE, comprises the steps:
1) the graft fibres sorbing material was soaked into 1～60 minute with acetonitrile, methyl alcohol, ethanol or acetone, use the drip washing of washing water solution again;
2) will treat that extraction solution contacts with fibrous material after the drip washing, extracts;
3) fiber after will extracting is with " washing water solution " drip washing;
4) be adsorbed on organic matter on the fiber with solvent elution;
Described eluting solvent is the mixture of one or more arbitrary proportions in acetonitrile, methyl alcohol, ethanol, oxolane, ethyl acetate or the carrene;
Described " washing water solution " is for containing the aqueous solution of volume ratio 0～5% organic solvent; Described organic solvent is the mixture of one or more arbitrary proportions among methyl alcohol, ethanol, acetonitrile or the acetone.
The purposes of graft fibres material in SPE that the present invention makes, the material preparation of use graft fibres goes out various different shapes, various devices as SPE:, make the SPE film of various difformities (box size length, side, circle) and different sizes (areas) after the multilayer stack 1) with the fiber after the grafting processing; 2) with behind the fibrous material strands after the grafting processing, prepare the extracting head that can be used for SPME; 3) grafting is handled back fibrous material or fiber membrane and placed syringe, make and can be used for SPE and on-the-spot example enrichment, purify device.
Operation principle of the present invention is as follows:
Most of example enrichments and purification are based on selective surface's absorption of certain material and the process of resolving.Be the selective absorption measured matter first, the drip washing of a large amount of matrix interference thing is fallen, wash-out measured matter under given conditions again, and reach the enrichment catharsis; Perhaps anti-its road will disturb matrix to be adsorbed in material surface, and the drip washing of measured object selectivity will be got off.The enrichment purification effects depends on the selectivity of material surface, absorption/parsing balancing speed, adsorption capacity.The granular materials of porous high-ratio surface is adopted in traditional SPE, is filled in a cast container.Sample solution is added in the pipe, and chaff interference is removed in washing then, uses particular solution wash-out measured object again, concentrate eluant, and sampling detects then.Be characterized in the sample capacity height, favorable reproducibility; But process is long, and efficient is low, and the sample requirement is big, and sensitivity is low.Present SPME adopts solid fiberglass surfacing to scribble one deck semifluid sorbing material, after the selective absorption measured object, and in the gas chromatograph injection port, the high temperature desorption.Its advantage is to use process simple, and is highly sensitive; But because specific surface is low, and the absorption/parsing balancing speed of sample in the semifluid sorbing material is slow, causes sample capacity low, poor reproducibility, and only be applicable to gas chromatographic detection.Of the present invention is that the novel quick extraction of carrier and sample introduction product and technology are to be material of main part with novel high functionalisation of surfaces graft fibres with functionalized fiber, after stranded, make, both had high functionalized surfaces, kept absorption/fast advantage of parsing balance again, and favorable mechanical stability has been arranged.Be processed into needle-based and form of film product, thereby can be used for liquid chromatogram or mass spectrum direct injected, enlarge range of application.New product will have traditional SPE high power capacity simultaneously, high reappearance and unique high sensitivity, use simple, the advantage that desorption rate is fast.Its occupation mode is: with the fiber adsorbing material of sample solution after extraction for several times is by processing, measured object is adsorbed in functionalized fiber surface, then uses particular elutriated liquid, with the direct wash-out of sample in, gas phase, liquid chromatogram or mass spectrum injector, or adopt alternate manner to measure behind the some plate.
The present invention has following beneficial effect: graft fibres material of the present invention can be stablized and carry out the SPE process fast, has avoided the pollution of sample; Have mass transfer velocity faster, can use bigger aperture (1-100 μ m) to quicken the processing of sample, the pollution of having avoided particulate to come off and cause; This material can be used for the sample extraction and the purification of liquid chromatogram or mass spectral analysis direct injected.Method of the present invention is simple, convenient, and on-the-spot sample pre-treatments is reliable, and direct injected analyzes the result to required analytical instrument easily.
The specific embodiment
Embodiment 1
A kind of to have adsorbing graft fibres preparation methods as follows: get polypropylene fibre 10 grams, through radiation gamma 10 minutes, put into 500ml and contain the acrylic acid aqueous solution of 1% (weight ratio), stirred 4 hours down at 50 ℃; Taking out the back is neutral with pure water rinsing to collecting liquid; Vacuum drying weigh 10.6 the gram; Dried fibrous material is put into and is contained 2 gram N, in the 200ml tetrahydrofuran solution of N ' dicyclohexylcarbodiimide, adds 5 gram octadecanols again and adds hot reflux 4 hours; Make polyacrylate grafting fiber 12 grams.
Embodiment 2
It is a kind of that to have adsorbing graft fibres preparation methods as follows: polypropylene fibre 10 grams, and through radiation gamma 10 minutes, put into 500ml and contain the acrylic acid aqueous solution of 1% (weight ratio) and stirred 4 hours down at 52 ℃; Taking out the back is neutral with pure water rinsing to collecting liquid.Vacuum drying weigh 10.6 the gram.Dried fibrous material is put into and is contained 2 gram N, in the 200ml tetrahydrofuran solution of N ' dicyclohexylcarbodiimide, adds 5 grams, 12 carbon alcohol again and adds hot reflux 4 hours, makes polyacrylate grafting fiber 11.8 grams.
Embodiment 3
It is a kind of that to have adsorbing graft fibres preparation methods as follows: polypropylene fibre 10 grams, and through radiation gamma 10 minutes, put into 500ml and contain the acrylic acid aqueous solution of 1% (weight ratio) and stirred 4 hours down at 54 ℃; Taking out the back is neutral with pure water rinsing to collecting liquid; Vacuum drying weigh 10.6 the gram; Dried fibrous material is put into and is contained 2 gram N, in the 200ml tetrahydrofuran solution of N ' dicyclohexylcarbodiimide, adds 5 gram octanols again and adds hot reflux 4 hours, makes polyacrylate grafting fiber 11.5 grams.
Embodiment 4
It is a kind of that to have adsorbing graft fibres preparation methods as follows: polypropylene fibre 10 grams, and through radiation gamma 10 minutes, put into 500ml and contain the acrylic acid aqueous solution of 1% (weight ratio) and stirred 4 hours down at 56 ℃; Taking out the back is neutral with pure water rinsing to collecting liquid; Vacuum drying weigh 10.6 the gram; Dried fibrous material is put into and is contained 2 gram N, in the 200ml tetrahydrofuran solution of N ' dicyclohexylcarbodiimide, adds 5 grams, 18 carbon amine again and adds hot reflux 4 hours, makes Polyacrylamide Grafted fiber 12.3 grams.
Embodiment 5
It is a kind of that to have adsorbing graft fibres preparation methods as follows: polypropylene fibre 10 grams, and through radiation gamma 10 minutes, put into 500ml and contain the acrylic acid aqueous solution of 1% (weight ratio) and stirred 4 hours down at 58 ℃; Taking out the back is neutral with pure water rinsing to collecting liquid; Vacuum drying weigh 10.6 the gram; Dried fibrous material is put into and is contained 2 gram N, in the 200ml tetrahydrofuran solution of N ' dicyclohexylcarbodiimide, adds 5 gram octylames again and adds hot reflux 4 hours, makes Polyacrylamide Grafted fiber 11.9 grams
Embodiment 6
It is a kind of that to have adsorbing graft fibres preparation methods as follows: polypropylene fibre 10 grams, and through radiation gamma 10 minutes, put into 500ml and contain the acrylic acid aqueous solution of 5% (weight ratio) and stirred 3 hours down at 59 ℃; Taking out the back is neutral with pure water rinsing to collecting liquid.Vacuum drying weigh 11.5 the gram; Dried fibrous material is put into and is contained 4 gram N, in the 200ml tetrahydrofuran solution of N ' dicyclohexylcarbodiimide, adds 10 gram octylames again and adds hot reflux 4 hours, makes Polyacrylamide Grafted fiber 13.4 grams.
Embodiment 7
It is a kind of that to have adsorbing graft fibres preparation methods as follows: polypropylene fibre 10 grams, and through radiation gamma 10 minutes, put into 500ml and contain the acrylic acid aqueous solution of 5% (weight ratio) and stirred 3 hours down at 57 ℃; Taking out the back is neutral with pure water rinsing to collecting liquid.Vacuum drying weigh 11.5 the gram.Dried fibrous material is put into and is contained 4 gram N, in the 200ml tetrahydrofuran solution of N ' dicyclohexylcarbodiimide, adds 10 gram octanols again and adds hot reflux 4 hours, makes polyacrylate grafting fiber 13.1 grams.
Embodiment 8
It is a kind of that to have adsorbing graft fibres preparation methods as follows: polypropylene fibre 10 grams, and through radiation gamma 10 minutes, put into the tetrahydrofuran solution that 500ml contains 3% (weight ratio) acrylic acid octadecyl acid amides and stirred 8 hours down at 55 ℃; Do not contain raw material or polymer with methyl alcohol and oxolane flushing in the liquid to collecting respectively after the taking-up, vacuum drying-obtain Polyacrylamide Grafted fiber 12.7 to restrain.
Embodiment 9
It is a kind of that to have adsorbing graft fibres preparation methods as follows: polypropylene fibre 10 grams, and through radiation gamma 10 minutes, put into the tetrahydrofuran solution that 500ml contains 3% (weight ratio) dodecylacrylate and stirred 8 hours down at 53 ℃; Do not contain raw material or polymer with methyl alcohol and oxolane flushing in the liquid to collecting respectively after the taking-up, vacuum drying-obtain polyacrylate grafting fiber 12.6 to restrain.
Embodiment 10
A kind of have an adsorbing graft fibres material, and fiber bodies is a polypropylene, and the graft materials on the fiber bodies is the mixture of polyacrylate/polyacrylamide.Its preparation method is as follows: get polyacrylate grafting fiber 12 grams that obtain among the embodiment 1, insert 500 milliliters and contain 2% (weight ratio) N, the tetrahydrofuran solution of N ' dicyclohexylcarbodiimide and 5% (weight ratio) propylamine refluxed 8 hours; With oxolane and methanol wash, drying obtains polyacrylate/polyacrylamide mixed grafting fiber 12.3 grams.
Embodiment 11
A kind of have an adsorbing graft fibres material, and the preparation method is as follows: Polyacrylamide Grafted fiber 10 grams that obtain among the embodiment 4, insert 500 milliliters of tetrahydrofuran solutions that contain 2%DCC and 5% propylamine, and refluxed 8 hours; With oxolane and methanol wash, drying obtains polypropylene stearamide/polypropylene propionamide mixed grafting fiber 10.4 grams.
Embodiment 12
A kind of use has the method that adsorbing graft fibres material carries out SPE, comprise the steps: that the polyacrylate/polyacrylamide mixed grafting fiber that will obtain in the example 10 places 6 milliliters of plastic tubes for 500 milligrams, soak into the back with 2 ml methanol and clean with 2 ml deionized water; With 100 milliliters of aqueous solution that contain each 100 microgram of naphthalene, anthracene, phenyl ethylamine by the plastic tube of fiber is housed; Clean fiber and plastic tube for 5 milliliters with 5% methanol aqueous solution; Naphthalene, anthracene and the phenyl ethylamine that will be attracted on the fiber with 2 milliliters of acetonitriles wash and receive.
Embodiment 13
A kind of use has the method that adsorbing graft fibres material carries out SPE, comprise the steps: that the polyacrylamide mixed grafting fiber that will obtain in the example 11 places 6 milliliters of plastic tubes for 500 milligrams, soak into the back with 2 ml methanol and clean with 2 ml deionized water; With 100 milliliters of aqueous solution that contain each 100 microgram of naphthalene, anthracene, phenyl ethylamine by the plastic tube of fiber is housed; Clean fiber and plastic tube for 5 milliliters with 5% methanol aqueous solution; Naphthalene, anthracene and the phenyl ethylamine that will be attracted on the fiber with 2 milliliters of acetonitriles wash and receive.
Embodiment 14
A kind of have an adsorbing graft fibres material, and it comprises following raw material:
1) fiber bodies;
2) graft materials on the fiber bodies;
Described fiber bodies is a polyethylene; Described graft materials is a fatty acid ester;
The percentage by weight that described graft materials accounts for whole fibrous material is 1%;
Described fatty acid ester molecular formula is:---CH
2-CH
2-COOC
8H
17
A kind of use has the method that adsorbing graft fibres material carries out SPE, comprises the steps:
1) the graft fibres sorbing material was soaked into 1 minute with acetonitrile, use " washing water solution " drip washing again;
2) will treat that extraction solution contacts with fibrous material after the drip washing, extracts;
3) fiber after will extracting is with the drip washing of washing water solution;
4) be adsorbed on organic matter on the fiber with solvent elution;
Described solvent is an acetonitrile;
Described " washing water solution " is for containing the organic solvent of volume ratio 1%; Described organic solvent is a methyl alcohol.
Embodiment 15
A kind of have an adsorbing graft fibres material, and it comprises following raw material:
1) fiber bodies;
2) graft materials on the fiber bodies;
Described fiber bodies is a polypropylene;
Described graft materials is a fatty acid amide;
Described fatty acid amide molecular formula is:
---CH
2-CH
2The described R of-COONHR is the straight chained alkyl that contains 20 carbon;
The percentage by weight that described graft materials accounts for whole fibrous material is 7%;
A kind of use has the method that adsorbing graft fibres material carries out SPE, comprises the steps:
1) the graft fibres sorbing material was soaked into 60 minutes with methyl alcohol, use " washing water solution " drip washing again;
2) will treat that extraction solution contacts with fibrous material after the drip washing, extracts;
3) fiber after will extracting is with the drip washing of washing water solution;
4) be adsorbed on organic matter on the fiber with solvent elution;
Described solvent is a methyl alcohol; Described " washing water solution " is for containing the organic solvent of volume ratio 2%; Described organic solvent is an ethanol.
Embodiment 16
A kind of have an adsorbing graft fibres material, and it comprises following raw material:
1) fiber bodies;
2) graft materials on the fiber bodies;
Described fiber bodies is a polypropylene;
Described graft materials is a fatty acid ester, and described fatty acid ester has following molecular formula:
——CH
2-CH
2-COOR
Described R is the straight chained alkyl that contains 20 carbon.
The percentage by weight that described graft materials accounts for whole fibrous material is 16%.
A kind of use has the method that adsorbing graft fibres material carries out SPE, comprises the steps:
1) the graft fibres sorbing material was soaked into 40 minutes with methyl alcohol, use " washing water solution " drip washing again;
2) will treat that extraction solution contacts with fibrous material after the drip washing, extracts;
3) fiber after will extracting is with the drip washing of washing water solution;
4) be adsorbed on organic matter on the fiber with solvent elution;
Described solvent is an ethanol; Described " washing water solution " is for containing the organic solvent of volume ratio 3% acetonitrile.
Embodiment 17
A kind of have an adsorbing graft fibres material, and it comprises following raw material:
1) fiber bodies;
2) graft materials on the fiber bodies;
Described fiber bodies is polyethylene and polyacrylic copolymer;
Described graft materials is a fatty acid amide; The molecular formula of described fatty acid amide:
Described R is the straight chained alkyl that contains 12 carbon; Described R ' is for containing the straight chained alkyl of 14 carbon.The percentage by weight that described graft materials accounts for whole fibrous material is 25%;
A kind of use has the method that adsorbing graft fibres material carries out SPE, comprises the steps:
1) the graft fibres sorbing material was soaked into 20 minutes with acetone, use " washing water solution " drip washing again;
2) will treat that extraction solution contacts with fibrous material after the drip washing, extracts;
3) fiber after will extracting is with the drip washing of washing water solution;
4) be adsorbed on organic matter on the fiber with solvent elution;
Described solvent is an oxolane; Described " washing water solution " is for containing the organic solvent of volume ratio 5% acetone;
Embodiment 18
A kind of have an adsorbing graft fibres material, and it comprises following raw material:
1) fiber bodies;
2) graft materials on the fiber bodies;
Described fiber bodies is polypropylene or the copolymer of the two; Described graft materials is the mixture of fatty acid ester and fatty acid amide;
Described fatty acid ester molecular formula is:---CH
2-CH
2-COOR; Described R is the straight chained alkyl that contains 16 carbon;
Described fatty acid amide molecular formula is:---CH
2-CH
2-COONHR; Described R is the straight chained alkyl that contains 16 carbon; Described R ' is for containing the straight chained alkyl of 16 carbon.
The percentage by weight that described graft materials accounts for whole fibrous material is 35%.
A kind of use of the present invention has the method that adsorbing graft fibres material carries out SPE, comprises the steps:
1) the graft fibres sorbing material was soaked into 10 minutes with ethanol, use " washing water solution " drip washing again;
2) will treat that extraction solution contacts with fibrous material after the drip washing, extracts;
3) fiber after will extracting is with the drip washing of washing water solution;
4) be adsorbed on organic matter on the fiber with solvent elution;
Described solvent is the mixture of ethyl acetate and carrene;
Described " washing water solution " is for containing the organic solvent of volume ratio 4% ethanol.
Embodiment 19
Prepared by embodiment 1-18 at the graft fibres material, prepare various different shapes, the various devices that are used for SPE:, make the SPE film of various difformities (box size length, side, circle) and different sizes (areas) after the multilayer stack 1) with the nonwoven after the grafting processing; 2) with behind the fibrous material strands after the grafting processing, prepare the extracting head that can be used for SPME; 3) grafting is handled back fibrous material or fiber membrane and placed syringe, make and can be used for SPE and on-the-spot example enrichment, purify device.
Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give exhaustive to all embodiments.Everyly belong to the row that conspicuous variation that technical scheme of the present invention extends out or change still are in protection scope of the present invention.
Claims (10)
1, a kind of have an adsorbing graft fibres material, it is characterized in that it comprises following component:
1) fiber bodies;
2) graft materials on the fiber bodies;
Described fiber bodies is polyethylene, polypropylene or the copolymer of the two;
Described graft materials is the polymer of fatty acid ester, fatty acid amide, fatty acid ester and fatty acid amide or the mixture of fatty acid ester and fatty acid amide;
The percentage by weight that described graft materials accounts for whole fibrous material is 1～35%.
2, graft fibres material according to claim 1 is characterized in that, described graft fibres diameter is between the 1-100 micron.
3, graft fibres material according to claim 1 is characterized in that, described fatty acid ester has following general formula:
——CH
2-CH
2-COOR
Described R is the straight chained alkyl that contains 8-20 carbon.
4, graft fibres material according to claim 1 is characterized in that, described fatty acid amide has following general formula:
Described R is the straight chained alkyl that contains 8-20 carbon; Described R ' is for containing the straight chained alkyl of 1-20 carbon.
5, graft fibres material according to claim 1 is characterized in that, described graft materials is polyacrylate, polyacrylamide or the copolymer of the two.
6, graft fibres material according to claim 5 is characterized in that, the alkoxyl in the described polyacrylate is the alkoxyl that contains 8-20 carbon, and the amido in the described polyacrylamide is the fatty amido that contains 8-20 carbon.
7, a kind of use has the method that adsorbing graft fibres material carries out SPE, it is characterized in that, comprises the steps:
1) the graft fibres sorbing material was soaked into 1～60 minute with acetonitrile, methyl alcohol, ethanol or acetone, use " washing water solution " drip washing again;
2) will treat that extraction solution contacts with fibrous material after the drip washing, extracts;
3) fiber after will extracting is with " washing water solution " drip washing;
4) be adsorbed on organic matter on the fiber with the eluting solvent wash-out.
8, use according to claim 7 has the method that adsorbing graft fibres material carries out SPE, it is characterized in that: described eluting solvent is the mixture of one or more arbitrary proportions in acetonitrile, methyl alcohol, ethanol, oxolane, ethyl acetate or the carrene.
9, use according to claim 7 has the method that adsorbing graft fibres material carries out SPE, it is characterized in that: described " washing water solution " is for containing the organic solvent of volume ratio 0～5%; Described organic solvent is the mixture of one or more arbitrary proportions among methyl alcohol, ethanol, acetonitrile or the acetone.
10, a kind of have the purposes of adsorbing graft fibres material in SPE.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172516A (en) * | 2011-03-28 | 2011-09-07 | 天津博纳艾杰尔科技有限公司 | Novel resin-coated silica-gel adsorption material |
| CN109358142A (en) * | 2016-08-17 | 2019-02-19 | 延边大学 | A kind of production method of carbon nano-fiber/carbon fiber solid-phase micro-extracting device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1265052C (en) * | 2004-06-11 | 2006-07-19 | 上海大学 | Preparing method for temperature controlling ionic absorbing fibre |
| CN1843619A (en) * | 2006-03-31 | 2006-10-11 | 胡秀峰 | Method for preparing high-selective absorbing and separating fiber material |
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2008
- 2008-07-22 CN CN2008101320514A patent/CN101632918B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172516A (en) * | 2011-03-28 | 2011-09-07 | 天津博纳艾杰尔科技有限公司 | Novel resin-coated silica-gel adsorption material |
| CN102172516B (en) * | 2011-03-28 | 2013-05-15 | 天津博纳艾杰尔科技有限公司 | Novel resin-coated silica-gel adsorption material |
| CN109358142A (en) * | 2016-08-17 | 2019-02-19 | 延边大学 | A kind of production method of carbon nano-fiber/carbon fiber solid-phase micro-extracting device |
| CN109358142B (en) * | 2016-08-17 | 2021-04-06 | 延边大学 | Manufacturing method of carbon nanofiber/carbon fiber solid phase micro-extraction device |
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| CN101632918B (en) | 2012-07-04 |
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