Mineral Characteristics Analysis of PM2.5 in Northern China

摘要：

　　PM2.5 (sandstorm-related) was sampled at four sites near dust source areas in Northern China in spring 2012.Every site was away from obvious pollution source.After drying 24 hours in a dry dish,X-ray diffraction (XRD),x-ray fluorescence (XRF) and scanning electron microscope (SEM) of all the samples were examined.The main phases were quartz,albite,calcite and mica.SEM observations showed that the particles were mainly irregular shaped,but different sample the particle morphology is slightly different.And the surface was rough because of erosion mark or pores on them.The chemical composition of PM2.5 is characteristic of high SiO2 and CaO,while low K2O,Na2O.Main elements of the samples were Si,Al,Fe,Ca,which were familiar with crust elements and dust fall components (Dong F.Q.et al,2005),but some samples also contained low-level heavy metals like As and Pb.

关键词： PM2.5 Northern China Mineral components Chemical element concentration Microscopic characteristics

作者: Lizhu Liu Xiaochun He Qunwei Dai Yunbi Huang Faqin Dong

作者单位: Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education,Mianyang 621010, China;School of Environment and Resource, Southwest University of Science and Technology,Mianyang 621010, China

会议类型: 国际会议

会议名称: 中国微米纳米技术学会第14届学术年会、第3届国际年会暨第6届微米纳米技术“创新与产业化国际研讨与展览会(CSMNT2012 & ICMAN2012)

会议地点: 杭州

会议语种:英文

页码: 1-6

在线出版日期: 2012-11-04（万方平台首次上网日期，不代表论文的发表时间）