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）.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
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)
