上海市钢铁工业尘单颗粒分析  

Analysis of single dust particles from steel industry in Shanghai

作　　者：仇志军[1] 王基庆[1] 郭盘林[1] 李晓林[1] 裘惠源[1] 陆荣荣[1] 朱节清[1] 

机构地区：[1]中国科学院上海原子核研究所,上海201800

出　　处：《核技术》2001年第6期461-467,共7页Nuclear Techniques

基　　金：中国科学院九五重大基础性研究项目! (2 10 3975 3);国家自然科学基金项目! (110 30 0 42 )

摘　　要：用高分辨率、高灵敏度的扫描质子微探针对上海市钢铁工业尘进行单颗粒分析 ,研究了在颗粒物中不同元素的分布以及元素平均含量随粒径大小的变化。结果表明 ,Fe、Cr、Mn等元素在颗粒物中是均匀分布的 ,而K、Ca则富集在颗粒物的表面。而且这些元素的平均含量随粒径的变化呈现出一定的规律性 ,其中大部分重金属元素 (如Cu、Cr、Ni、Zn、Pb)聚集在颗粒粒径 <5μm的颗粒物上。A scanning proton microprobe (SPM) with high resolution and high sensitivity is applied to analyze single particles from steel industry in Shanghai. The elemental distribution and the variation of mean concentration of different elements with particle sizes were studied. The results indicated that the distributions of elements such as Fe, Cr and Mn are uniform, but K and Ca were rich on the surface of the particles. Moreover, the variation of mean concentration of different elements with particle sizes had regular features. Some harmful elements, such as Cu, Cr, Ni, Zn, Pb were contained in particles with size less than 5μm.

关 键 词：钢铁工业尘 扫描质子微探针 单颗粒分析 大气污染 上海 环境监测 污染控制 

分 类 号：X513[环境科学与工程—环境工程] X831