三苄基杯[6]芳烃固相微萃取-气相色谱联用测定中草药中有机氯含量

Residues of Organochlorine Pesticides(OCPs) in Chinese Herbal Medicines

采用三苄基杯[6]芳烃／羟基硅油（C[6]／OH-TSO）探头固相微萃取（SPME）与气相色谱（GC）联用测定中草药中有机氯农药的残留量。结果表明：萃取温度为70℃，时间为30min，加入NaCl2．0g时，C[6]／OH-TSO探头对有机氯农药的萃取效果最佳。8种有机氯农药的加标回收率在88．56％-103．2％，相对标准偏差在6．23％-9．85％，能满足中草药中有机氯农药残留的检测要求。

A SPME - GC method was developed to determine the residues of organochlorine pesticides in Chinese herbal medicines. The results indicated that C[6]/OH - TSO fiber showed optimal extraction efficiency for OCPs under the conditions of 70℃ and 30 min of extraction time with addition of 2.0g of sodium chloride. The recovery rates of eight organochlorine pesticides were from 88.56 % to 103.2 % The relative standard deviation （n = 6） values were from 6.23 %to 9.85 %, which could meet the detection requirement to the residues of organochlorine pesticides in Chinese herbal medicines.