Abstract：The TSP, PM10, PM2.5 particles were sampled at Xi Gu Area and Yu Zhong County (in Lanzhou City) in July 2010 and January 2011. The contents of TSP, PM10, PM2.5 particles and heavy metals(Cd, Cr, Cu, Pb, Ni, Zn) in TSP, PM10, PM2.5 particles were analyzed. The result indicated that the average concentration of TSP in winter in research area was 0.36 times higher than national standard level-II, while concentration was lower in summer. In research area, the average concentration of PM10 both in winter and summer increased 1.18-fold and 0.19-fold respectively, in comparison with that of national standard level-II. In comparison area, the average concentration of PM10 in winter was 0.05 times higher than national standard. Compared with American daily mean value standard, the average concentration of PM2.5 in research area and in comparison area in winter increased 1.94-fold and 1.0-fold, while the value increased 0.31-fold in research area in summer. In condusion, average concentration of TSP, PM10, PM2.5 in winter was higher than that in summer, and the concentration in research area was higher than that in comparison area. An order of potential ecological risk inedx of heavy metals in atmospheric partiles was Cd>Cu>Ni>Zn>Pb>Cr, in which the potential ecological risk degree of Cd reached terribly strong. While the potential ecological risk index of TSP, PM10, PM2.5 were all reached the terribly strong level, in which the PM2.5’s potential ecological risk index was highest.
林海鹏, 武晓燕, 战景明, 路文芳, 张艳平, 王胜利, 谢满廷, 刘占旗. 兰州市某城区冬夏季大气颗粒物及重金属的污染特征[J]. 中国环境科学, 2012, 32(5): 810-815.
LIN Hai-Peng, WU Xiao-Yan, ZHAN Jing-Ming, LU Wen-Fang, ZHANG Yan-Ping, WANG Sheng-Li, XIE Man-Ting, LIU Zhan-Qi. Analysis of atmospheric particles and heavy metals character at the area of Lanzhou City in summer and winter.. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(5): 810-815.
