PMID: 18200865Jan 19, 2008Paper

Outflow of polycyclic aromatic hydrocarbons from Guangdong, southern China

Environmental Science & Technology
Chang LangStaci Simonich

Abstract

The atmospheric outflow of polycyclic aromatic hydrocarbons (PAHs) from Guangdong, China, a region of high PAH emission, was modeled using a potential receptor influence function (PRIF) probabilistic model which was based on a spatially resolved PAH inventory and air mass forward-trajectory calculations. Photochemical degradation and deposition (dry and wet) of PAHs during atmospheric transport were taken into consideration. On average, 48% of the PAHs (by mass) remained in the atmosphere for a transport period of 5 days, staying within the boundary of the source region. The medium molecular weight PAHs (four rings) were predicted to travel longer distances in the atmosphere than the low (three rings) or high molecular weight PAHs (five rings) because they are less photodegradable than the lower molecular weight, gas-phase PAHs and less likelyto undergo wet and dry depositions than the higher molecular weight, particulate phase PAHs. Under the strong influence of the East Asian monsoons in winter, the predominant outflow pattern of PAHs from Guangdong was to the South China Sea and Southeast Asian countries. In summer, PAHs were transported primarily to northern mainland China. Under particular weather conditions in winter, the...Continue Reading

References

Feb 24, 2001·Science·K E WilkeningM Engle
Sep 12, 2003·Environmental Science & Technology·William D Hafner, Ronald A Hites
Jun 6, 2006·Environmental Science & Technology·Sara BeckerSheri Friesen
Mar 3, 2007·Environmental Science & Technology·Yanxu ZhangRaymond M Coveney
Jun 6, 2007·Environmental Science & Technology·Toby PrimbsYoshizumi Kajii

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Citations

Mar 29, 2012·Environmental Monitoring and Assessment·Tian LinZhigang Guo
Mar 23, 2012·Environmental Science & Technology·Yayoi InomataHajime Akimoto
Jul 25, 2008·Environmental Pollution·Yanxu Zhang, Shu Tao
Nov 7, 2020·Critical Reviews in Analytical Chemistry·Putri Nur Syafieqah ZainalNor Zida Rosly
Dec 31, 2009·Environmental Science & Technology·Rong WangHayley Hung
Aug 30, 2008·Environmental Science & Technology·Chang LangStaci Simonich

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