摘要
首次建立了中药材中氯氰菊酯、氰戊菊酯和溴氰菊酯的提取、净化及其毛细管气相色谱测定法。运用混合溶剂提取，填有Ｆｌｏｒｉｓｉｌ和氧化铝的层析柱净化。样品中氯氰菊酯、氰戊菊酯和溴氰菊酯的添加回收率分别为９４．３０％～９９．３４％，９５．１７％～１０１．５５％和８９．１２％～１００．９７％；ＲＳＤ分别为４．０２％～８．２２％，１．９０％～８．０４％和３．７５％～５．０９％。结果表明，被测样品中除白芍外均含有氰戊菊酯，个别样品中含溴氰菊酯。实验表明，该法具有灵敏度高、选择性强、操作简便、净化效果好。
A method for the extraction, clean-up and determination of cypermethrin, fenvalerate and deltamethrin residues in Chinese herbal medicines has been developed. The pesticides determination was performed by electron capture gas chromatography with a PE-5 capillary column. Purification of the pesticides was performed by a column(15 cm×1.5 cm) packed with 4 g Florisil and 1 g Al2O3. The results indicated the recovery of cypermethrin, fenvalerate and deltamethrin was 94.30%～ 99.34%,95.17%～ 101.55% and 89.12% ～ 100.97%,RSD was 4.02% ～ 8.22%, 1.90%～ 8.04% and 3.75%～5.09%,respectively. Fenvalerate was found in each sample except Paeonia lactiflora Pall. Cypermethrin was found in some samples. The method has high sensitivity, repeatability and selectivity.
出处
《分析测试学报》
CAS
CSCD
1999年第2期6-9,共4页
Journal of Instrumental Analysis
基金
国家中医药管理局科学基金
关键词
中药材
拟除虫菊酯
农药残留
GC
测定
Chinese herbal medicine, Pyrethroid, Pesticide, Residue, Gas chromatography
