Persistent organic pollutants (POPs) such as hexa-chlorocyclohexane (HCH), polychlorinated biphenyls (PCBs) and dichlorodiphenyltrichloroethane (DDT) are very universal in China.

• 摘要各类有机氯污染物在我国的污染非常普遍，主要以六六六，滴滴涕，多氯联苯为主。