| 上海城市街道灰尘重金属铅污染现状及评价 |
| 摘要点击 2331 全文点击 1561 投稿时间：2005-04-11 修订日期：2005-07-03 |
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| 中文关键词 铅 街道灰尘 克里格插值 污染评价 上海 |
| 英文关键词 lead street dust Kriging analysis pollution assessment Shanghai |
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| 中文摘要 |
| 对上海市区和郊区城镇中心街道灰尘中铅的含量水平进行了研究,并应用克里格插值法分析了市区街道灰尘中铅的空间分布特征,结果表明:市区街道灰尘中铅的含量为28～4443 mg·kg-1,平均含量为264 mg·kg-1,为上海土壤环境背景值的10.4倍;郊区城镇中心街道灰尘中铅的含量为155～364 mg·kg-1,平均含量为237 mg·kg-1,为环境背景值的9.3倍;市区内环线以内黄浦江两岸区域铅污染较为严重,平均含量为359 mg·kg-1;铅污染中心主要位于商业区和交通干道,平均含量分别为642和520 mg·kg-1.地积累指数法和铅污染指数法的评价结果表明:上海城市街道灰尘中铅污染整体上处于中度污染水平,其中,市区内环线以内黄浦江两岸区域街道灰尘中铅污染处于偏重污染水平.研究结果以期为上海市的城市环境污染防治和城市规划提供重要的科学依据. |
| 英文摘要 |
| The content of lead in urban street dust of Shanghai is studied,and Kriging analysis is applied to analyze the spatial distribution of lead in street dust of urban area.The range of lead content in street dust of urban area is 28～4443(mg·kg)-1,with the average value of 264(mg·kg)-1,which is 10.4 times of the soil background value in Shanghai;The range of lead content in the street dust of suburban towns' centers is 155～364(mg·kg)-1,with the average value of 237(mg·kg)-1,which is 9.3 times of the soil background value.The lead content in urban area within the inner ring is 359(mg·kg)-1.The lead pollution centers in urban area locate mainly in commercial area and major roads,where the average content of lead in street dust is 642 and 520(mg·kg)-1 respectively.The assessment results show that the lead pollution in urban street dust of Shanghai is generally at middle pollution level,and the lead pollution in urban area within the inner ring reaches middle to high pollution level.The results are expected to provide important scientific basis for the urban environmental pollution control and city planning of Shanghai. |
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