Chemical profiles of urban fugitive dust PM2.5 samples in Northern Chinese cities

被引：118

作者：

Shen, Zhenxing ^{[1
,2
]}

Sun, Jian ^{[1
]}

Cao, Junji ^{[2
]}

Zhang, Leiming ^{[3
]}

Zhang, Qian ^{[1
]}

Lei, Yali ^{[1
]}

Gao, Jinjin ^{[1
]}

Huang, Ru-Jin ^{[2
,4
]}

Liu, Suixin ^{[2
]}

Huang, Yu ^{[2
]}

Zhu, Chongshu ^{[2
]}

Xu, Hongmei ^{[1
]}

Zheng, Chunli ^{[1
]}

Liu, Pingping ^{[1
]}

Xue, Zhiguo ^{[5
]}

机构：

[1] Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China

[2] Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710049, Peoples R China

[3] Environm & Climate Change Canada, Air Qual Res Div, Sci & Technol Branch, Toronto, ON, Canada

[4] Paul Scherrer Inst, Lab Atmospher Chem, CH-5232 Villigen, Switzerland

[5] Kashgar Univ, Sch Life & Geog Sci, Xinjiang, Peoples R China

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2016年 / 569卷

关键词：

Urban fugitive dust; Chemical profiles; Ca/Al ratio; FINE PARTICULATE MATTER; SAN-JOAQUIN VALLEY; SOURCE APPORTIONMENT; ASIAN DUST; ACE-ASIA; ATMOSPHERIC EMISSIONS; SPRING; 2002; AEROSOL; PM10; POLLUTION;

D O I：

10.1016/j.scitotenv.2016.06.156

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Urban fugitive dust PM2.5 sampleswere collected in 11 selected cities in North China, and 9 ions (SO42-, NO3-, Cl-, F-, Na+, NH4+, K+, Mg2+, and Ca2+) and 22 elements (Si, Al, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Br, Rb, Sr, Sn, Sb, Ba, and Pb) were determined to investigate chemical profiles of PM2.5. The coefficient of divergence (CD) was used to compare the similarities of the chemical profiles for fugitive dustamong three regions in North China, and the results showed that their composition are quite similar. Total water soluble ions occupied 9.3% and 10.0% on average of road dust and construction dust, respectively, indicating that most of the materials in urban fugitive dust samples were insoluble. Ca2+ was the most abundant cation and SO42- dominated in anions. Soil dust loading was calculated to occupy 70.8% and 83.6% in road dust and construction dust, respectively. Ca, Si, Fe, and Al were the most abundant elements in all the samples, and Ca was absolutely the most abundant specie among the 22 detected elements in construction dust samples. Chemical species ratios were used to highlight the characteristics of urban fugitive dust by comparing with other types of aerosols. High Ca/Al ratio was a good marker to distinguish urban fugitive dust from Asian dust and Chinese loess. In addition, low K+/K and NO3-/ SO42-, and high Zn/Al and Pb/Al ratios were good indicators to separate urban fugitive dust from desert dust, Chinese loess, or urban PM2.5 samples. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：619 / 626

页数：8

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