NP and OP concentrations in Haihe River were 160~429ng/L and 18~56ng/L respectively, and in Bohai Bay were 33~132ng/L and n.

• 结果表明；海河中NP和OP的浓度分别为160~429ng/L和18~56ng/L; 渤海湾中NP和OP的浓度分别为33~132ng/L和n.