Sea-air exchange of bromoanisoles and methoxylated bromodiphenyl ethers in the Northern Baltic
| Autor: | Alyse Hegmans, Liisa M. Jantunen, Olle Nygren, Per Liljelind, Justen J. Poole, Mats Tysklind, Agneta Andersson, Kathleen Agosta, Matyas Ripszam, Terry F. Bidleman, Peter Haglund |
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| Rok vydání: | 2016 |
| Předmět: |
Baltic States
010504 meteorology & atmospheric sciences Oceans and Seas Anisoles 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences Gas Chromatography-Mass Spectrometry Air pollutants Sea air Environmental monitoring Halogenated Diphenyl Ethers Seawater 0105 earth and related environmental sciences Air Pollutants Chemistry Biota Pollution Baltic sea Environmental chemistry Seasons Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Marine Pollution Bulletin. 112:58-64 |
| ISSN: | 0025-326X |
| DOI: | 10.1016/j.marpolbul.2016.08.042 |
| Popis: | 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°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 (38,000km |
| Databáze: | OpenAIRE |
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