作　　者： ; ; ; ; ; ;

机构地区： 华南农业大学资源环境学院

出　　处： 《土壤通报》 2009年第5期1185-1188,共4页

摘　　要： 采集425个广州城市表层土壤(0～10cm)样品,研究土壤汞的含量及分布特征,采用单因子污染指数评价土壤汞的污状况。结果表明广州城市土壤汞的含量变幅为0.013～12.231mgkg-1,平均值为0.614mgkg-1。各行政区土壤中汞的平均含量和中值均以越秀区和荔湾区最高;各功能区土壤中汞的平均含量以城市公园最高。根据污染指数判断,有75%土壤样品受到不同程度的汞污染,各行政区中越秀区和荔湾区土壤汞污染最严重,各功能区中城市公园土壤汞污染最严重。人类活动与城市土壤汞污染密切相关,应密切关注城市公园土壤汞污染对人类健康和城市环境质量的影响。 Total 425 soil samples at 0 - 10 cm depth were collected from different administrative districts in Guangzhou, which respresenting different land use categories including urban park, residential area, rodeside, public building zone and industrial area. Soil Hg concentration and distribution were studied, and its pollution status was assessed according to single pollution index. The results indicated that the concentrations of Hg in Guangzhou urban soils ranged from 0.013 to 12.231 mg kg^-1 with an average of 0.614 mg kg^-1. The mean and median values of Hg were the highest in soils of Yuexiu and Liwan districts within studied administrative districts, and of urban parks within studied land use categories. According to single pollution certain extent. The most serious pollution by Hg were index, about 75% of studied soils were polluted by Hg to in soils of Yuexiu and Liwan districts within studied administrative districts, and of urban parks within studied land use categories. Urban history and industrial activities have close relation with Hg pollution in Guangzhou urban soil. More attentions should be paid to the influence of soil Hg pollution in urban parks on human health and environmental quality such as its bioaccessibility to human and leaching risk to water.

关 键 词： 城市土壤 汞 分布特征 污染评价 广州

领　　域： [环境科学与工程]