Sea-air exchange of bromoanisoles and methoxylated bromodiphenyl ethers in the Northern Baltic

被引：17

作者：

Bidleman, Terry F. ^{[1
]}

Agosta, Kathleen ^{[1
]}

Andersson, Agneta ^{[2
]}

Haglund, Peter ^{[1
]}

Liljelind, Per ^{[1
]}

Hegmans, Alyse ^{[3
]}

Jantunen, Liisa M. ^{[4
]}

Nygren, Olle ^{[1
]}

Poole, Justen ^{[5
]}

Ripszam, Matyas ^{[1
]}

Tysklind, Mats ^{[1
]}

机构：

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

[2] Umea Univ, Dept Ecol & Environm Sci, SE-90187 Umea, Sweden

[3] Royal Roads Univ, Dept Environm Sci, Victoria, BC V9B 5Y2, Canada

[4] Environm & Climate Change Canada, Air Qual Proc Res Sect, 6248 Eighth Line, Egbert, ON L0L 1N0, Canada

[5] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada

来源：

MARINE POLLUTION BULLETIN | 2016年 / 112卷 / 1-2期

基金：

瑞典研究理事会;

关键词：

Halogenated natural products; Bromoanisoles; Methoxylated bromodiphenyl ethers; Air-water exchange; Baltic Sea; POLYBROMINATED DIPHENYL ETHERS; DIBENZO-P-DIOXINS; HALOGENATED NATURAL-PRODUCTS; HENRYS-LAW-CONSTANTS; BROMOPEROXIDASE-CATALYZED DIMERIZATION; BROMINATED AROMATIC-COMPOUNDS; SALMON SALMO-SALAR; BLUE MUSSELS; ORGANIC POLLUTANTS; PHOTOCHEMICAL FORMATION;

D O I：

10.1016/j.marpolbul.2016.08.042

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Halogenated natural products in biota of the Baltic Sea include bromoanisoles (BAs) and methoxylated bromodiphenyl ethers (MeO-BDEs). We identified biogenic 6-MeO-BDE47 and 2'-MeO-BDE68 in Baltic water and air for the first time using gas chromatography - high resolution mass spectrometry. Partial pressures in air were related to temperature by: log p/Pa = m / T(K) + b. We determined Henry's law constants (HLCs) of 2,4-dibromoanisole (2,4-DiBA) and 2,4,6-tribromoanisole (2,4,6-TriBA) from 5 to 30 degrees C and revised our assessment of gas exchange in the northern Baltic. The new water/air fugacity ratios (FRs) were lower, but still indicated net volatilization in May-June for 2,4-DiBA and May - September for 2,4,6-TriBA. The net flux (negative) of BAs from Bothnian Bay (38,000 km(2)) between May - September was revised from- 1319 to -532 kg. FRs of MeO-BDEs were >1, suggesting volatilization, although this is tentative due to uncertainties in their HLCs and binding to dissolved organic carbon. Crown Copyright (C) 2016 Published by Elsevier Ltd. All rights reserved.

引用

页码：58 / 64

页数：7

共 71 条

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