摘要
目的建立一种可同时对29种有机氯、有机磷类农药残留量进行定量检测的方法。方法利用GC-MS技术,配合负化学源检测器,采用选择离子检测法(SIM)进行定量,以石油醚-丙酮混合溶剂为洗脱溶剂,样品通过Florisil硅土柱净化,选择环氧七氯为内标物。结果对48种中药材进行了检测;除敌敌畏、杀虫脒、磷丹及三唑磷外,其余农药的检测限都在0.2～15 g.kg-1之间;以9种中药材为例检测,大部分农药的回收率在70%～120%之间。结论该方法简单、快捷、经济,分析结果达到农残分析的要求,适合大批量样品的同时检测。
Objective To determine the residues of twenty-nine pesticides including organochlorine, organophosphorus in 48 Chinese medicinal plants. Methods A wide range of screening and quantitative method was established for multiresidue analysis by using gas chromatography-mass spectrometry （C-C-MS） with negative chemical ionization （NCI）. The samples containing the pollutants were extracted with mixture of petroleun ether-acetone and purified by the florisil columns. Heptachlor epoxide was used as internal standard. Results The detection limit ranged from 0.2 - 15 μg·kg^-1. The recoveries of most pesticides were good with the ranged of 70 % - 120 % in 9 medicine crops. Conclusions This method is rapid, simple, accurate and suitble to determine a great deal of samples simultaneously.
出处
《沈阳药科大学学报》
CAS
CSCD
北大核心
2007年第6期342-347,379,共7页
Journal of Shenyang Pharmaceutical University
基金
国家"十五"重大科技专项(2001BA701A57)
关键词
气相-质谱法
有机氯
有机磷
农药
中药材
GC-MS
organochlorine
organophosphorus
pesticide
traditional Chinese medicine
