[Elemental size distribution of airborne fine and ultrafine particulate matters in the suburb of Shanghai, China].
The elemental size distributions of airborne fine/ultrafine particulate matters in the suburb of Shanghai were studied using synchrotron X-ray fluorescence. Median mass aerodynamic diameter (MMAD), elemental correlation coefficient as well as enrichment factor (EF) of each size fraction were calculated to characterize the sources of elements in fine/ultrafine particulate matters. Ca and Ti distributed mainly in coarse particles (> 2 microm) with size independent enrichment factors between 0.1 and 3.2, and the correlation coefficient between Ca and Ti was as high as 0.933, which implied strong contribution from nature sources, such as soil dusts and resuspended dusts. However, V, Cr, Mn, Ni, Zn, Cu, Pb, Cl, S mainly distributed in 0.1-1.0 microm particulate matters with MMAD between 0.56-0.94 microm. The EF of V, Cr, Ni, Cu, Zn, Pb increased with decreasing particle size. The highest EF were found for Pb in ultrafine particulate matters (< 0.1 microm) with EF of 2,023.7-2,244.2. The evidences suggested that these elements were significantly influenced by anthropogenic sources and enriched in fine/ultrafine particles smaller than 1 microm. Fe distributed uniformly in the particles larger than 0.2 microm with MMAD of 1.3 microm. The results indicated non-negligible influences of remote transmission of anthropogenic pollutions.
Lin
Jun
J
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China. jlin1978@gmail.com
Liu
Wei
W
Li
Yan
Y
Bao
Liang-Man
LM
Li
Yu-Lan
YL
Xu
Zhong-Yang
ZY
Wu
Wei-Wei
WW
Chen
Dong-Liang
DL
He
Wei
W
D000393:Air Pollutants / Q000032:analysis*; D002681:China; D004781:Environmental Exposure; D004784:Environmental Monitoring; D008670:Metals / Q000032:analysis*; D010316:Particle Size; D052638:Particulate Matter / Q000032:analysis*; D018881:Suburban Health
D000393:Air Pollutants; D008670:Metals; D052638:Particulate Matter