« Previous AbstractCharacterization of sorption mechanisms of solid-phase microextraction with volatile organic compounds in air samples using a linear solvation energy relationship approach    Next Abstract"Influence of Asian and Western United States urban areas and fires on the atmospheric transport of polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and fluorotelomer alcohols in the Western United States" »

Environ Sci Technol

Title:		Atmospheric outflow of anthropogenic semivolatile organic compounds from East Asia in spring 2004
Author(s):		Primbs T; Simonich S; Schmedding D; Wilson G; Jaffe D; Takami A; Kato S; Hatakeyama S; Kajii Y;
Address:		"Departments of Chemistry and Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331, USA"
Journal Title:		Environ Sci Technol
Year:		2007
Volume:		41
Issue:		10
Page Number:		3551 - 3558
DOI:		10.1021/es062256w
ISSN/ISBN:		0013-936X (Print) 0013-936X (Linking)
Abstract:		"To estimate the emissions of anthropogenic semivolatile organic compounds (SOCs) from East Asia and to identify unique SOC molecular markers in Asian air masses, high-volume air samples were collected on the island of Okinawa, Japan between 22 March and 2 May 2004. Contributions from different source regions (China, Japan, the Koreas, Russia, and ocean/local) were estimated by use of source region impact factors (SRIFs). Elevated concentrations of hexachlorobenzene (HCB), hexachlorcyclohexanes (HCHs), dichlorodiphenyltrichloroethanes (DDTs), and particulate-phase polycyclic aromatic hydrocarbons (PAHs) were attributed to air masses from China. A large proportion of the variation in the current-use pesticides, gas-phase PAHs, and polychlorinated biphenyl (PCB) concentrations was explained by meteorology. Chlordanes showed a technical mixture profile and similar concentrations regardless of source region. alpha/gamma HCH and trans/cis chlordane ratios did not vary significantly with different source regions and had regional averages of 2.5 +/- 1.0 and 1.2 +/- 0.3, respectively. Particulate-phase PAH concentrations were significantly correlated (p value < 0.05) with other incomplete combustion byproduct concentrations, including elemental mercury (Hg0), CO, NOx, black carbon, submicrometer aerosols, and SO2. By use of measured PAH, CO, and black carbon concentrations and estimated CO and black carbon emission inventories, the emission of six carcinogenic particulate-phase PAHs was estimated to be 1518-4179 metric tons/year for Asia and 778-1728 metric tons/year for China, respectively. These results confirm that East Asian outflow contains significant emissions of carcinogenic particulate-phase PAHs"
Keywords:		"Atmosphere/*chemistry Asia, Eastern Humans Meteorological Concepts Organic Chemicals/*analysis Pesticides/analysis Polychlorinated Biphenyls/analysis Regression Analysis *Seasons Time Factors Volatilization;"
Notes:		"MedlinePrimbs, Toby Simonich, Staci Schmedding, David Wilson, Glenn Jaffe, Dan Takami, Akinori Kato, Shungo Hatakeyama, Shiro Kajii, Yoshizumi eng P30ES00210/ES/NIEHS NIH HHS/ Research Support, N.I.H., Extramural Research Support, U.S. Gov't, Non-P.H.S. 2007/06/06 Environ Sci Technol. 2007 May 15; 41(10):3551-8. doi: 10.1021/es062256w"