Residue and temporal trend by PCB residue in surface soils in BacNinh

Abstract

     Selected PCB congener and total PCB were analysed in the surface soils of Bacninh, Viet Nam. Forty representative soil samples were collected from the centre of Bacninh city and three surrounding districts (Tu Son, Tien Du, Yen Phong). The PCB concentrations in the surface soils from Bacninh were investigated by means of gas chromatography coupled with mass spectrometry. The analysed results indicated the wide extent of contamination of PCB in Bacninh. The long-time release of PCB and decreasing trend of PCB levels are observed.