Characteristics and Sources of Elements in Atmospheric Particles before and in Heating Period of Beijing
In order to investigate the characteristics of atmospheric particles before and in heating period in Beijing, aerosol samples were collected during October ～ December 2008. Mass concentrations of 16 elements were determined using Proton Induced X-ray Emission (PIXE) technique. The results showed that total concentration of 16 elements in heating period increased by 3 percent than that before heating period. However, several elements concentrations increased evidently. For example, concentrations of As and Cu increased by more than 30 percent, and Pb concentration in fine particles increased by 27 percent. The enrichment factors of Cu, As, and Pb decrease largely compared with those in 1999, which indicated that the controlling methods for particle pollution in Beijing were very effective.
atmospheric particles size distribution heating period Enrichment factor
Lingda Yu Guangfu Wang Guanghua Zhu Renjiang Zhang
Key Laboratory of Beam technology and Materials Modification of Ministry of Education，College of Nuc Key Laboratory of Beam technology and Materials Modification of Ministry of Education，College of Nuc Key Laboratory of Regional Climate-Environment Research for Temperate East Asia(RCE-TEA),Institute o
国际会议
西安
英文
862-867
2011-08-17（万方平台首次上网日期，不代表论文的发表时间）