A measurement of summertime dry deposition of ambient air particulates and associated metallic pollutants in Central Taiwan
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- 作者：Guor-Cheng Fang ; Hung-Che Chiang ; Yu-Cheng Chen…
- 关键词：PM2.5 ; PM2.5-0 ; Dry deposition ; TSP ; Metallic elements
- 刊名：Environmental Geochemistry and Health
- 出版年：2015
- 出版时间：April 2015
- 年：2015
- 卷：37
- 期：2
- 页码：233-249
- 全文大小：1,721 KB
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- 刊物主题：Earth sciences
Geochemistry
Atmospheric Protection, Air Quality Control and Air Pollution
Public Health- 出版者：Springer Netherlands
- ISSN：1573-2983
文摘
The purpose of this study is to characterize metallic elements associated with atmospheric particulate matter in the dry deposition plate, total suspended particulate, fine particles, and coarse particles at Taichung Harbor and Gong Ming Junior High School (airport) in central Taiwan at a sampling site from June 2013 to August 2013. The results indicated that: (1) the average concentrations of the metallic elements Cr and Cd were highest at the Gong Ming Junior High School (airport), and the average concentrations of the metallic elements Ni, Cu, and Pb were highest at the Taichung Harbor sampling site. (2) The high smelting industry density and export/import rate of heavily loaded cargos were the main reasons leading to these findings. (3) The average metallic element dry deposition and metallic element PM2.5-0 all followed the order of Pb?>?Cr?>?Cu?>?Ni?>?Cd at the two sampling sites. However, the average metallic elements Cu and Pb were found to have the highest dry deposition velocities and concentrations in PM2.5 for the two sampling sites in this study. (4) The correlation coefficients of ambient air particle dry deposition and concentration with wind speed at the airport were higher than those from the harbor sampling site. The wind and broad open spaces at Taichung Airport were the possible reasons for the increasing correlation coefficients for ambient air particle concentration and dry deposition with wind speed at the Taichung Airport sampling site.