敌草隆在棉纤维上的降解及产物分析

棉花纤维作为重要的纺织品原材料，其安全性越来越受到人们的关注。本文针对棉花种植过程中大量使用且半衰期长的敌草隆作为研究对象，通过光降解和煮练过程，利用液相色谱技术进行检测，研究敌草隆的降解及产物。结果表明，煮练条件下，在40min敌草隆能够完全从棉纤维上脱除，液相色谱能够有效的检测敌草隆在棉花纤维上的残留，重复性好，满足农药检测标准，在光解和煮练过程中敌草隆的降解产物同为3,4-二氯苯胺。

Analysis of degradation of diuron oncotton fibers

As an important textile material, the cotton’s security is drawing more and more attention. In this paper, we focus on the photodegradation and alkali hydrolysis products as well as the dynamics hydrolysis-reduction of diuron, a long half-life herbicide common used in cotton product. High Performance Liquid Chromatography (HPLC) was employed for analyzing all the diuron solutions extracted from cotton fiber and photodegradation sample. The result showed that diuron can be completely removed from cotton fiber in about 40 minutes in common scouring condition and the degradation products of diuron in photolysis and scouring process were the same compound: 3, 4 - dichloroaniline. It was also concluded that HPLC can effectively detect diuron residues on cotton fiber with a good repeatability and can meets standard pesticide testing requirements.