中藥材中殘留農藥之調查(I)

PESTICIDE RESIDUES IN CHINESE HERBS (I)

以電子捕獲式檢出器之氣相層析儀檢測市售芍藥、枸杞中藥材五十件之有機氯農藥殘留量。其檢測項目色括α-BHC、β-BHC、γ-BHC、pp'-DDT、Aldrin、Dieldrin、Heptachlor、Endrin、Heptachlor epoxide 等九種有機氯劑。以本分析方法，檢測該九種有機氯農藥，其最低檢出限量分別為：α-BHC 12.0 ppb、β-BHC 20.0 ppb、γ-BHC 12.0 ppb、pp'-DDT 20.0 ppb、Aldrin 10.0 ppb、Dieldrin 12.0 ppb、Heptachlor 15.0 ppb、Endrin 15.0 ppb、Heptachlor epoxide 10.0 ppb。其添加回收率介於73.3～87.5 %。經本分析方法檢測五十件檢體均未檢出上述九種有機氯農藥。

Pesticide residue analysis of 50 samples of marketed Chinese herbs including Paeoniae Radix and Lycii Fructus were carried out by GC/ECD. Nine organic chlorinated pesticides (α-BHC, β-BHC, γ-BHC, Heptachlor, Aldrin , Heptachlor epoxide, Dieldrin, Endrin, pp'-DDT) were investigated. The defection limits of this method were 12.0 ppb forα-BHC, 20.0 ppb forβ-BHC, 12.0 ppb for γ-BHC, 15.0 ppb for Heptachlor, 10.0 ppb for Aldrin, 10.0 ppb for Heptachlor epoxide, 12.0 ppb for Dieldrin, 15.0 ppb for Endrin, and 20.0 ppb for pp-DDT. The recoveries were 85.4~87.5% for α-BHC, 83.4~84.0% for β-BHC, 81.0~82.9% for γ-BHC, 82.6~84.0% for Heptachlor, 80.0~84.2% for Aldrin, 80.6~82.0% for Heptachlor epoxide, 73.3~84.6% for Dieldrin, 82.5~84.9% for Endrin, and 79.8-82.7% for pp'-DDT. None of the fifty herbal samples collected randomly from Chinese herb shops in Taipei City were found to have contained any of the above mentioned pesticides.