Global Atmospheric Transport and Source-Receptor Relationships for Arsenic
Publication in refereed journal

香港中文大學研究人員

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摘要Arsenic and many of its compounds are toxic pollutants in the global environment. They can be transported long distances in the atmosphere before depositing to the surface, but the global source-receptor relationships between various regions have not yet been assessed. We develop the first global model for atmospheric arsenic to better understand and quantify its intercontinental transport. Our model reproduces the observed arsenic concentrations in surface air over various sites around the world. Arsenic emissions from Asia and South America are found to be the dominant sources for atmospheric arsenic in the Northern and Southern Hemispheres, respectively. Asian emissions are found to contribute 39% and 38% of the total arsenic deposition over the Arctic and Northern America, respectively. Another 14% of the of the arsenic deposition to the Arctic region is attributed to European emissions. Our results indicate that the reduction of anthropogenic arsenic emissions in Asia and South America can significantly reduce arsenic pollution not only locally but also globally.
著者Wai KM, Wu SL, Li XL, Jaffe DA, Perry KD
期刊名稱Environmental Science and Technology
出版年份2016
月份4
日期5
卷號50
期次7
出版社AMER CHEMICAL SOC
頁次3714 - 3720
國際標準期刊號0013-936X
電子國際標準期刊號1520-5851
語言英式英語
Web of Science 學科類別Engineering; Engineering, Environmental; Environmental Sciences; Environmental Sciences & Ecology

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