中文摘要：

对黄浦江上游饮用水源地水及沉积物中Hg、As的含量及分布进行了调查研究．结果表明，水中Hg、As的浓度范围分别为0．0407-0．2287μg·L^-1、0．6087-5．2667μg·L^-1，平均值分别为0.1492μg·L^-1、2．7442μg·L^-1；与地表水环境质量标准（GB3838-2002）Ⅲ类水标准相比，83．3％的样点Hg浓度超标，As未出现超标现象．沉积物中Hg、As的含量范围分别为0．0479-0．4169mg·kg^-1、4．84-9．01mg·kg^-1，平均值分别为0．1488mg·kg^-1、6．59mg·kg^-1；57．1％的样点Hg含量超过了上海市土壤背景值，As含量未超标．从空间分布来看，位于工业园区河流的采样点及河流入江口的采样点水体中Hg、As浓度较高．沉积物对Hg、As的浓缩系数分别位于209-2361、1113-11171之间．沉积物中Hg、As的含量均与有机碳含量成显著正相关关系，表明本研究区域沉积物中有机碳是Hg、As含量的主要影响因子．根据Hg、As的分布特征，推断黄浦江上游饮用水源地Hg、As的污染源主要包括工业污染源、农业污染源、生活污水垃圾、上游来水、河流沉积物的二次污染、来往船只污染物的排放等．

英文摘要：

The concentrations and distribution of mercury （Hg） and arsenic （As） in the water and sediment of the drinking water source area of the Huangpu River were investigated. The results showed that the concentration of Hg in the water ranged from 0. 0407 to 0. 2287 μg·L^-1 with an average of 0. 1492μg·L^-1 and the concentration of Asranged from 0.6087 to 5.2667μg·L^-1, with an average of 2.7442μg·L^-1.In 83.3% of the sample sites in this investigation, the Hg concentrations exceeded the Type Ⅲ standard of the GB3838-2002 Environmental Quality Standards for surface water, while the As concentrations were all below this standard, The concentration of Hg in sediment ranged from 0. 0479 to 0. 4169 mg·kg^-1 with an average of 0. 1488 mg·kg^-1 and the concentration of As was between 4.84 and 9.01 mg·kg^-1, with an average of 6.59 mg·kg^-1. A total of 57.1% of the sample sites had Hg concentrations exceeding the soil background of Shanghai, while the As concentrations were all below that of the background soil. The Hg and As concentrations in water and sediment were relatively higher at the Eco-indnstrial Park rivers and the mouths of rivers. Accumulation coefficients of sediment Hg and As ranged from 209 to 2361 and 1113 to 11171, respectively. The concentration of Hg and As had significant positive correlation with TOC in sediment, which indicated that the concentration of TOC was the principal factor controlling sediment Hg and As concentration. According to the distribution characteristics of Hg and As in the water and sediment of the drinking water source area of the upper reaches of the Huangpu River, it is concluded that these pollutants mainly come from industry, agriculture, domestic sewage, upper stream rivers, secondary-pollution from river sediment, and pollutant emissions from ships.