Air-sea gas exchange of HCHs and PCBs and enantiomers of α-HCH in the Kattegat Sea region

被引：30

作者：

Sundqvist, KL ^{[1
]}

Wingfors, H

Brorström-Lundrén, E

Wiberg, K

机构：

[1] Umea Univ, Dept Chem, SE-90187 Umea, Sweden

[2] Swedish Environm Res Inst, SE-40258 Gothenburg, Sweden

来源：

ENVIRONMENTAL POLLUTION | 2004年 / 128卷 / 1-2期

关键词：

HCHs; PCBs; gas exchange; Kattegat Sea; enantiomer fraction;

D O I：

10.1016/j.envpol.2003.08.022

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Concentrations and air-water gas exchange of polychlorinated biphenyls (PCBs) and hexachlorocyclohexanes (HCHs) were determined in nine paired air and water samples. The samples were collected monthly in the Kattegat Sea between December 1998 and November 1999. Average fugacity and flux values indicated that PCBs were oversaturated in the water, while HCHs were net deposited. Variations were large over the year, especially during spring and summer. Air parcel back trajectories suggested that air concentrations over the Kattegat Sea are largely dependent of air mass origin. Seasonal trends were detected for airborne HCHs and for PCBs in water. The air and water enantiomeric compositions of alpha-HCH indicated that a larger portion of alpha-HCH in air originated from the underlying water during summer than during winter. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：73 / 83

页数：11

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