摘要
目的：建立了固相萃取-毛细管柱测定大米、茶叶中的有机氯农药残留方法。方法：采用石油醚：丙酮（5：1,v/v）超声波提取样品,Florisil固相萃取柱净化,用OV-1701弹性石英毛细管程序升温气相色谱法测定。结果：本优化方法应用于测定茶叶和大米8种有机氯农药残留量均有较宽的线性范围（0.001～0.1μg/ml）和较好的线性相关（r=0.9938～0.9992）,重现性较好（RSD=1.5%～5.2%）,检出限为5.7×10^-4～5.8×10^-3μg/ml。结论：该方法准确、快速、灵敏度高。
Objective：To develop a solid phase extraction - capillary gas chromatography column method to determine organochlorine pesticide residues in foods. Methods：The samples were extracted by petroleum ether- acetone （5：1, v：v） using ultrasonic extraction, purified by Florisil solid phase extraction, determined by OV - 1701 capillary gas chromatography column. Results ：The optimized method was used to determine 8 organochlorine pesticides in tea and rice samples. This method had approving linear range （0. 001 - 0. 1 μg/ml ）, correlation （ r = 0. 9938 - 0. 9992 ） and repeatability （ RSD = 1.5% - 5. 2% ）. The limits of detection （LODs） were 5.7 × 10^-4 ～5. 8× 10^-3 μg/ml. Conclusion ：The method is reliable, fast and sensitive.
出处
《中国卫生检验杂志》
CAS
2008年第6期1048-1050,1066,共4页
Chinese Journal of Health Laboratory Technology
关键词
食品
气相色谱
有机氯农药残留
Foods
Gas chromatography
Organochlorine pesticide residues
作者简介
凌东辉（1969-），男，中山大学（2004MPH）在读硕士，副主任检验技师，主要从事理化检验工作。
