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28～4443mg·kg^-1，平均含量为264mg·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155～364mg·kg^-1，平均含量为237mg·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359mg·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520mg·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.
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.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2006年第3期519-523,共5页
Environmental Science
基金
国家自然科学基金项目(40131020
40173030)
上海市基础研究重点项目(02DJ14029)
国家教育部优秀教师资助计划项目(41198054)
上海市环保局项目
关键词
铅
街道灰尘
克里格插值
污染评价
上海
lead
street dust
Kriging analysis
pollution assessment
Shanghai
