PCDD/Fs in sodium pentachlorophenate(Na-PCP)and human blood , milk and sediment samples from Chinese schistosomiasis areas

Sodium pentachlorophenate(Na-PCP)has been used as molluscacide in China for about 30 years. The results of an analysis of Chinese Na-PCP for PCDDFs revealed that the content of total PCDDs was significantly higher than that of PCDFs.This paper also reported the PCDD/Fs levels in human blood,milk and sediment samples from schistosomiasis areas, which were markedly higher than those of other regions. It suggested a possible relationship between the elevated levels of PCDDs in human body or environ- ment and the use of Na-PCP.