上海市城区道路降尘中铂元素污染分析及评价  

Pt pollution in the road fall dust of Shanghai City

作　　者：朱燕[1] 高松[2] 李晓林[1] 李玉兰[1] 徐崎 谈明光[1] 李燕[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]上海市环境监测中心,上海200030 [3]上海市普陀区环境监测站,上海200062

出　　处：《中国环境科学》2009年第10期1100-1104,共5页China Environmental Science

基　　金：国家自然科学基金资助项目(10775172);中国学院知识创新工程项目(KJCX3.SYW.N3)

摘　　要：利用微波消解、电感耦合等离子体质谱法测定上海城区降尘中Pt浓度,采用数学校正法消除Hf对Pt分析带来的干扰.结果表明,上海城区降尘中Pt含量为6.2-381.4ng/g,平均含量37.3ng/g.富集因子计算表明上海降尘Pt含量主要受到人为因素的影响.降尘中Pt含量与交通流量有密切关系,交通流量越大,降尘中Pt含量越高.与世界其他城市相比,上海城区Pt污染较小.上海城区道路降尘中Pt含量明显高于大气PM10中的含量.The introduction of automobile catalytic converters leads to the pollution of platinum group elements in environment. Microwave digestion-inductively coupled plasma mass spectrometry （ICP-MS） was applied for analysis of Pt in road fall dust of Shanghai city. The interference was eliminated effectively by mathematical correction. The average Pt content of the 20 sampling sites was 37.3ng/g with a range of 6.2318.4ng/g. Enrichment factors calculation showed that Pt in road fall dust of Shanghai was derived from anthropogenic activities. A positive relation between the Pt contents and traffic flows was found. Compared with other cities in the world, the current pollution of Pt in Shanghai may be less serious. Pt in road fall dust were obviously higher than that in aerosol particles （PM10）.

关 键 词：道路降尘 PT 电感耦合等离子体质谱 富集因子 

分 类 号：X513[环境科学与工程—环境工程]