Abstract:Objective To study mutiresidual level of persistent organochlorine pesticides in animal origin foods,to provide information on the evaluation of the effectiveness of Stockholm Convention in the reduction or elimination of the release of POPs into the environment in China. Methods Pork, beef, mutton, chicken, fishes, egg and milk were collected at random from markets in13 different cities. The methodology used for the analysis of OCPs was based on acetone -petroleum ether extraction, gel permeation chromatography (GPC) cleanup, and gas chromatography with electron capture detector according to GB/T 5009.19—2008. Nines organochlorine pesticides (20 compounds) including hexachlorocyclohexanes (HCH), dichlorodiphenyl trichloroethane (DDT), aldrin, chlordane, dieldrin, endrin, heptachlor, hexachlorobenzene (HCB) and mirex were determined. Results The residual level of nines persistent organochlorine pesticides in animal origin foods were low level. Only β-HCH、pp′-DDE、HCB and heptachlor were detected over 3 times of the limit of detection (LOD) and other compounds were all near LOD. Conclusion The residual level of persistent organochlorine pesticides in animal origin foods dramatically decreased with the various bans and restrictions on HCHs, DDTs and other organochlorine persistent pesticides usage in China.