Screening Analysis of the Characteristic Pollutants in Songhua River in Jilin City

Objectives To screen the characteristic pollutants in Songhua River in Jilin city section.

Methods The organic pollutants and heavy metal ions were examined in Fengman District (upstream of the river, study area)and Longtan District(downstream of the river, controlled area) of Songhua River. A new method combining potential risk index with the comprehensive evaluation was adapted to screen the characteristic pollutants in the river basin.

Results The results showed that Cr, Heptachlor, As, Benzo (a) pyrene, b-Hexachlorocyclohexane, Chlorpyrifos-methyl, Pb, Hg, Benzo (a) anthracene, Nitrobenzene, 4-Chloro-m-xylene were characteristic pollutants.

Conclusions This method avoided the defects of singular screen method, and it could response the characteristics of pollution sources and pollutants in Songhua River in Jilin city.