The Investigation of Content of Pyrethroid Pesticide Residues in Main Chinese Traditional Patent Medicine in Guizhou

[Objective] To investigate pyrethroid pesticide residues in Chinese traditional patent medicine in Guizhou province.[Method] In Guiyang City,main varieties Chinese traditional patent medicine pharmacies of the 20 major pharmaceutical companies were purchased,3-5 batches of each variety,160 samples totally,after extraction and purification,detected by GC with ECD detector.[Result] Five pyrethroids were detected in the samples,the detection rate was 33.1%,the content concentrated in the 0.01-0.05 mg/kg.Taking "EU maximum residue limits of pesticides in fruit table"(2008) as a reference,samples pass rate was 85%.[Conclusion] These research data can be used as the reference for the development of Chinese traditional patent medicines pyrethroid pesticide residues limits in China.