[Chlorobenzenes in water and surface sediments from Tonghui River of Beijing].

Eleven chlorobenzenes (except MCB of a total of 12 in the congener series) in water and surface sediment samples collected from Tonghui River of Beijing China in November,2003 are analyzed. The range of total chlorobenzenes (CBs) was 0.093 - 6.638 microg x L(-1) in water, among which DCBs occupy 88.8%; while 95.3 - 1 827.7 ng x g(-1) in surface sediments, among which DCBs, TCBs,TeCBs,PeCB and HCB occupy 15.6%, 31.7%, 17.6%, 21.2% and 13.9% respectively. Comparison with the results of other research areas, the pollution of CBs in surface sediments is some serious. Besides, there is no significant correlation between total CBs concentrations in water and those in surface sediments.