摘要
目的:建立快速、灵敏的检测近海沉积物中痕量有机磷农药的方法。方法:用加速溶剂萃取仪(ASE)提取近海沉积物中的有机磷农药,用气相色谱-质谱(GC-MS)进行检测,建立了同时测定沉积物中敌敌畏、乐果、久效磷、甲基对硫磷、对硫磷、马拉硫磷、毒死蜱等7种有机磷农药的方法。采用正交实验优化了ASE的萃取条件:用丙酮、二氯甲烷(1:1,V/V)在加速溶剂萃取仪上以10.3 Mpa、120℃提取5 min。结果:近海沉积物中加标有机磷农药的回收率在78.7%-101.5%,检出限为0.43-14.2 ng/g。结论:该方法显著优于传统提取和分析方法。
Objectlve：To develop a rapid and sensitive analytical methods for the quantitative determination of trace OPPs in offshore sediment Methods： In extraction method development, accelerated solvent extraction （ASE） method has been optimized to extract 70PPs including dichlorvos, dimethoate, monocrotophos, parathion - methyl, parathion, malathion, and chlorpyrifos in sea - sediment Samples are extracted with ASE at 10. 3 Mpa, 120℃ for 5 min using a mixture of acetone and dichloromethane （1：1 ,V/V） as the solvenL Results：Recoveries of OPPs residues by.this procedure ranged from 78. 7% - 101.5%. The detection limit was 0. 43 - 14. 2 ng/g. Conclusion：The method is obviously better than traditional extraction method.
出处
《中国卫生检验杂志》
CAS
2007年第5期769-771,共3页
Chinese Journal of Health Laboratory Technology
基金
国家863项目(2003AA635180)
关键词
加速溶剂萃取
气相色谱
有机磷农药
沉积物
Accelerated solvent extraction
Gas chromatography
Organophosphorus pesticide
Sediment
