Exchange of polycyclic aromatic hydrocarbons across the air-water interface in the Bohai and Yellow Seas
作者： Yingjun Chen , Tian Lin , Jianhui Tang , Zhiyong Xie , Chongguo Tian
DOI: 10.1016/J.ATMOSENV.2016.06.039
关键词: Water column 、 Environmental chemistry 、 Particulates 、 Seawater 、 Sink (geography) 、 Volatilisation 、 Surface runoff 、 Wastewater 、 Contamination 、 Environmental science
摘要: Abstract In this study, air and surface seawater samples collected from the Bohai (BS) Yellow Seas (YS) in May 2012 were determined exchange of PAHs, especially low-molecular-weight (LMW) PAHs (three- four-ring PAHs) at air-water interface. Net volatilization fluxes LMW 266–1454 ng/m2/d decreased with distance coast, indicating that these transported coastal runoff potential contributors to atmosphere BS YS. Moreover, enriched dissolved phase compared those particulate water column, possibly suggesting volatilized directly derived wastewater discharge or petroleum pollution rather than released contaminated sediments. The air–sea three-ring 2- 20-fold higher their atmospheric deposition input output reached equilibrium for PAHs. Differently, five- six-ring introduced into marine environment primarily through dry wet deposition, column was still a sink surrounding atmosphere.
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