INAA研究内蒙古多伦县春季大气气溶胶分布特征及来源  

Study of characteristics and sources of aerosols in Duolun by INAA

作　　者：宋燕[1] 徐殿斗[1] 裴静[1] 欧阳宏[1] 丰伟悦[1] 张智勇[1] 毛雪瑛[1] 柴之芳[1] 

机构地区：[1]中国科学院高能物理研究所核分析技术重点实验室,北京100049

出　　处：《核技术》2005年第4期282-288,共7页Nuclear Techniques

基　　金：国家自然科学基金资助项目(19935020;10175075);重大项目;国际原子能机构合作项目(11921/RBF);中国科学院重要方向性项目(KJCX2-N10);中国科学院高能物理研究所核分析技术开放实验室基金(K102)资助

摘　　要：探讨了2002年春季内蒙古多伦县总悬浮颗粒物(TSP)和细颗粒物(PM2.5)的分布特征以及颗粒物浓度与气候的关系。并用仪器中子活化分析法(INAA)测定了TSP的元素成分,利用多种多元统计方法探讨了多伦春季TSP的可能来源。结果表明,多伦春季TSP和PM2.5污染较严重;TSP浓度主要受风速影响,而PM2.5浓度随气候变化其行为较复杂;TSP主要来自于地壳源,其中Cl与其它元素的相关性很小,可能主要来源于燃煤,而Br、Zn除了地壳来源外还有燃煤和废物焚烧的贡献。Duolun, a small town of the Inner Mongolia, was selected as a sampling site to collect the local sand, TSP and PM2.5 during dust storm period in the spring of 2002. The elemental compositions of TSPs were measured by instrumental neutron activation analysis (INAA). The relationship between aerosols mass concentrations and meteorological conditions was studied, and the sources of TSP were also investigated by the correlation analysis, principle factor analysis and cluster analysis. The results showed that most elements in the Duolun's TSPs came from the crust, whereas Br and Zn were from both anthropogenic activity and the crust. Since Cl exhibited an exceptional correlation with other elements, its existence could be attributed to the coal combustion.

关 键 词：大气气溶胶 多伦 总悬浮颗粒物 PM2.5 仪器中子活化分析(INAA) 

分 类 号：X513[环境科学与工程—环境工程]