CN100543463C - Pyrethroid pesticide remained method for quick - Google Patents
Pyrethroid pesticide remained method for quick Download PDFInfo
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- CN100543463C CN100543463C CNB2004101553821A CN200410155382A CN100543463C CN 100543463 C CN100543463 C CN 100543463C CN B2004101553821 A CNB2004101553821 A CN B2004101553821A CN 200410155382 A CN200410155382 A CN 200410155382A CN 100543463 C CN100543463 C CN 100543463C
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Abstract
The present invention relates to a kind of pyrethroid pesticide remained method for quick, it is as follows that it detects step: (1) extracts detected material: will contain pyrethroid pesticide remained detection thing and insert in the reactor; (2) decomposition, air-generating reaction: pyrethroid pesticide remained the resolving into that will detect in the thing with strong basicity reagent earlier contains cyanogen compound, then adding the solid particle that is mixed and made into by sodium borohydride and adsorbing base mixes with the detection thing, in reactor, add sulfuric acid solution at last, produce a large amount of gases with the solid particle made reaction moment.(3) chromogenic reaction: will decompose the gas that produces and introduce absorber, the specific developer reaction with in the absorption liquid makes the solution becomes au bleu.(4) qualitative analysis: by with the comparison of the colorimetric card of made of the present invention, thereby make the pyrethroid pesticide in the sample obtain qualitative and semi-quantitative analysis.This detection method is not only easy and simple to handle, and quick, cost is low, and helps applying.
Description
Technical field
The present invention relates to a kind of pyrethroid pesticide remained method for quick.
Background technology
At present, pyrethroid pesticide is the pesticide species that China is just using in large-scale popularization, and its residual food-safety problem that causes causes people's attention day by day.Existing method need be carried out pre-treatment processes such as complicated extraction, purification to pyrethroid pesticide remained analysis to sample, adopt large-scale instruments such as gas chromatography, gas chromatography-mass spectrum to analyze then.These methods are not only operated miscellaneous, and sense cycle is long, and reagent consumption is big and can't become quick, low-cost and method easy to utilize.
Summary of the invention
The objective of the invention is to provide a kind of pyrethroid pesticide remained method for quick, this detection method is not only simple and efficient to handle, and cost is low, and helps applying.
The detection step of the method for quick that the present invention is pyrethroid pesticide remained is as follows: (1) extracts detected material: will contain weighs after pyrethroid pesticide remained detection thing grinds inserts in the reactor.(2) decomposition, air-generating reaction: pyrethroid pesticide remained the resolving into that will detect in the thing with strong basicity reagent earlier contains cyanogen compound, then adding the solid particle that is mixed and made into by sodium borohydride and adsorbing base mixes with the detection thing, in reactor, add sulfuric acid solution at last, produce a large amount of gases with the solid particle made reaction moment.(3) chromogenic reaction:, the gaseous state composition that will decompose produce is introduced absorber, and the absorption liquid that is absorbed in the device absorbs, and described absorption liquid is the complexing agent of being made up of toluene-sodium-sulfonchloramide, isonicotinic acid and pyrazolone.Specific developer reaction in gas that generates and the absorption liquid makes the solution becomes au bleu.(4) qualitative analysis: by with the comparison of the colorimetric card of made of the present invention, thereby make the pyrethroid pesticide in the sample obtain qualitative and semi-quantitative analysis.
The present invention uses multi-usage micro constitutent device for fast detecting, according to specific chemical principle, under the acting in conjunction of aerogenesis reagent that strong basicity reagent, the solid particle that is mixed and made into by sodium borohydride and adsorbing base are mixed with and sulfuric acid solution and specific developer, the residues of pesticides of trace are developed the color intuitively.Realized fast detecting pyrethroid pesticide remained in the agricultural byproducts by contrasting we " the pyrethroid pesticide remained colorimetric card " of making.This method operation is fast and convenient, is suitable for on-the-spot and the breadboard fast detecting of basic unit.
Description of drawings
Fig. 1 is the pyrethroid pesticide remained device for fast detecting synoptic diagram of the present invention.
Embodiment
The detection step of the method for quick that the present invention is pyrethroid pesticide remained is as follows: (1) extracts detected material: will contain weighs after pyrethroid pesticide remained detection thing grinds inserts in the reactor; (2) decomposition, air-generating reaction: pyrethroid pesticide remained the resolving into that will detect in the thing with strong basicity reagent earlier contains cyanogen compound, then adding the solid particle that is mixed and made into by sodium borohydride and adsorbing base mixes with the detection thing, in reactor, add sulfuric acid solution at last, produce a large amount of gases with the solid particle made reaction moment.(3) chromogenic reaction:, the gaseous state composition that resolves into is introduced absorber, and the absorption liquid that is absorbed in the device absorbs, described absorption liquid is the complexing agent of being made up of toluene-sodium-sulfonchloramide isonicotinic acid and pyrazolone.Specific developer reaction in gas that generates and the absorption liquid makes the solution becomes au bleu.(4) qualitative analysis: by with the comparison of the colorimetric card of made of the present invention, thereby make the pyrethroid pesticide in the sample obtain qualitative and semi-quantitative analysis.
Above-mentioned strong basicity reagent is 0.5mol/L sodium hydroxide solution or potassium hydroxide solution.
The above-mentioned sodium borohydride and the proportioning of adsorbing base are 1:3～5.
Above-mentioned sulfuric acid solution concentration is 15～35%.
The complexing agent proportioning that above-mentioned toluene-sodium-sulfonchloramide isonicotinic acid and pyrazolone are formed is 5:5:2.
With reference to Fig. 1, specific practice of the present invention is: the reactor (2) that sample is placed multi-usage micro constitutent device for fast detecting; Earlier with aqueous alkali with the pyrethroid pesticide remained a certain gaseous state composition (as containing cyanogen compound) that resolves into, at this moment, continuation adds the solid particle reagent mix that is mixed and made into by sodium borohydride and adsorbing base in reactor (2) even, then from charger (1), add sulfuric acid solution again, moment produces a large amount of gases, gaseous state composition (containing cyanogen compound) is introduced absorber (3), and the absorption liquid that is absorbed in the device (3) absorbs.Specific developer reaction in gaseous state composition (containing cyanogen compound) and the absorption liquid, the solution becomes au bleu.Shade is directly proportional with pyrethroid pesticide content in the sample, by with the comparison of the colorimetric card of made of the present invention, thereby make the pyrethroid pesticide in the sample obtain qualitative and semi-quantitative analysis.
The present invention is novel, and is economic and practical, and its market outlook are considerable.
Claims (1)
- [claim 1] a kind of pyrethroid pesticide remained method for quick is characterized in that: it is as follows that it detects step:(1) extract detected material: will contain weighs after pyrethroid pesticide remained detection thing grinds inserts in the reactor;(2) decomposition, air-generating reaction: pyrethroid pesticide remained the resolving into that will detect in the thing with strong basicity reagent earlier contains cyanogen compound, then adding the solid particle that is mixed and made into by sodium borohydride and adsorbing base mixes with the detection thing, in reactor, add sulfuric acid solution at last, produce a large amount of gases with the solid particle made reaction moment;(3) chromogenic reaction: will decompose the gaseous state composition that produces and introduce absorber, and the absorption liquid that is absorbed in the device absorbs, described absorption liquid is the complexing agent of being made up of toluene-sodium-sulfonchloramide isonicotinic acid and pyrazolone, and the specific developer reaction in the gas of generation and the absorption liquid makes the solution becomes au bleu;(4) qualitative analysis: by with the comparison of the colorimetric card of made of the present invention, thereby make the pyrethroid pesticide in the sample obtain qualitative and semi-quantitative analysis;Described strong basicity reagent is 0.5mol/L sodium hydroxide solution or potassium hydroxide solution; The proportioning of described sodium borohydride and adsorbing base is 1: 3～5: described sulfuric acid solution concentration is 15～35%; The complexing agent proportioning that described toluene-sodium-sulfonchloramide isonicotinic acid and pyrazolone are formed is 5: 5: 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101553821A CN100543463C (en) | 2004-10-18 | 2004-10-18 | Pyrethroid pesticide remained method for quick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101553821A CN100543463C (en) | 2004-10-18 | 2004-10-18 | Pyrethroid pesticide remained method for quick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1763509A CN1763509A (en) | 2006-04-26 |
| CN100543463C true CN100543463C (en) | 2009-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004101553821A Expired - Fee Related CN100543463C (en) | 2004-10-18 | 2004-10-18 | Pyrethroid pesticide remained method for quick |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915813A (en) * | 2010-07-26 | 2010-12-15 | 云南烟草科学研究院 | Method for detecting pyrethroid pesticide residue amount in smoke by cigarette filter |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0803850D0 (en) * | 2008-02-29 | 2008-04-09 | London School Hygiene & Tropical Medicine | Assay |
| CN102128826B (en) * | 2010-11-11 | 2012-08-29 | 中国烟草总公司湖北省公司 | Novel color-developing agent luminosity analytical method for measuring hydrogen cyanide content in mainstream smoke quickly |
| CN102262089B (en) * | 2011-04-28 | 2014-05-21 | 华中农业大学 | Method for quickly and quantitatively detecting pesticide residue of cyanogens-containing synthetic pyrethroids in tea |
| CN106124433B (en) * | 2016-06-22 | 2018-11-13 | 上海理工大学 | A method of it quickly detects pyrethroid pesticide remained |
| CN106198519B (en) * | 2016-07-05 | 2019-01-25 | 广州市食品检验所 | The ninhydrin colorimetry of cypermethrin content in a kind of quick detection vegetables or fruit |
| CN105928940A (en) * | 2016-07-11 | 2016-09-07 | 苏州大学 | Pesticide residue detection method and detection kit |
| CN106442507A (en) * | 2016-11-03 | 2017-02-22 | 百奥森（江苏）食品安全科技有限公司 | Detection test paper for pyrethroid pesticide residues in foods |
-
2004
- 2004-10-18 CN CNB2004101553821A patent/CN100543463C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915813A (en) * | 2010-07-26 | 2010-12-15 | 云南烟草科学研究院 | Method for detecting pyrethroid pesticide residue amount in smoke by cigarette filter |
| CN101915813B (en) * | 2010-07-26 | 2012-08-22 | 云南烟草科学研究院 | Method for detecting pyrethroid pesticide residue amount in smoke by cigarette filter |
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| Publication number | Publication date |
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| CN1763509A (en) | 2006-04-26 |
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