农产品中二硫代氨基甲酸酯类、含氰根菊酯类农药残留快.pdf

福建农林大学
硕士学位论文
农产品中二硫代氨基甲酸酯类、含氯根菊酯类农药残留快速检
测研究
姓名:王家颖
申请学位级别:硕士
专业:食品科学
指导教师:蔡春平
20100401
福建农林大学硕士学位论文
农产品中二硫代氨基甲酸酯类、含氰根菊酯类农药残留快速检测研究
含氰根的拟除虫菊酯类农药经碱解后分解产生挥发性成分,通入氮气将挥发性成分带入
吸收液中显色,然后进行比色测定。该法检出限为0.4pgg,RSD小于6%,回收率为
75.0%~128.0%。适合于茶叶中该类农药残留的快速筛査。
本研究建立了农产品中二硫代氨基甲酸酯类农药残留和含氰根菊酯类农药残留的
快速检测技术,检测方法具有简便、快速、低成本和广谱等特点,完善了农产品中农药
残留快速检测技术;对保障农产品安全具有重要意义。
关键词:农产品;二硫代氨基甲酸酯拟除虫菊酯;残留;快速检测
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福建农林大学硕士学位论文
农产品中二硫代氨基甲酸酯类、含根約階类农药残图快速检测研究
Abstract
This paper reviewed the application and development of rapid detection of pesticide residues. The
detection method of dithiocarbamate and pyrethroid pesticides tesidues in agricultural products w
summarized in emphasis. On this basis, a new rapid detection technology was explored. The rapid
detection method of dithion amate peticides sidues in agricultura proucts was established and the
rapid detection of pyrethroid residues was preliminary studied. In addition, the detection tube method is
developed and used in the rapid detection of dithiocarbamate to do some exploratory researcl
In the rapid detection echnoloy of pesticide sidues enzyme inhibition method is the most widely
used and relatiely ma ure method. The method is fast, broad-spectrum and low-cost and is mainly used in
organic phosphorus and carbamate pesticides n the de eion of thiocarbamate and pyrethroid pesticide
residues, chromatoraphy method is chiefly adopted. However, the chromatography method requires
expensive instrumens and completed sample pre-treatment process, meanwile it is times consumptive and
high-cost, which is not suitable for rapid screening test. Therefore, the study on rapid detection of
dithiocarbamate and pyrethroid pesticide residues in agricultural products are of great significance
The results are as follows
1. A kind of rapid detection method was explored based on the development of rapid detection devices
The principle of this method was: in the rapid detection devices, the measured materials were decomposed
into a kind of volatile component rough chemical reactions. The volatile component was passed by the
foreign aid gas(eg nitrogen) from the matrix of the elements to the absorbing devices and was detected
after the high sensitivity color reaction in the color liquid
The rapid detection method of dithiocarbamate pesticides residues in agricultural products was
established. Dithiocarbamate pesticides in the sample were decomposed to carbon disulfide. Then carbon
disulfide was caried by ni ro en o he absorption color solution. It was detected by U spectrometer. The
recoveries were 83-117% and the coefficients of variation from 4.0% to 7.7%. The detection limit was
0.15ug/g,. This method was a mple and low-cost method for detecting dithiocarbamate residues in
agricultural products. Colorimetric card was developped basing on the spectrophotometry method which
made the detection faster and easier.
3. The carbon disulfide test tube was developed by the experiment of the test tube materials, reagent