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Sea-air exchange of bromoanisoles and methoxylated bromodiphenylethers in the Northern Baltic
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen. (Arcum ; EcoChange)
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och geovetenskap. (Arcum)
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.ORCID-id: 0000-0003-2293-7913
Vise andre og tillknytning
2016 (engelsk)Inngår i: Marine Pollution Bulletin, ISSN 0025-326X, E-ISSN 1879-3363, Vol. 112, nr 1-2, s. 58-64Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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 (38,000km2) between May - September was revised from -1319 to -532kg. FRs of MeO-BDEs were >1, suggesting volatilization, although this is tentative due to uncertainties in their HLCs and binding to dissolved organic carbon.

sted, utgiver, år, opplag, sider
Elsevier, 2016. Vol. 112, nr 1-2, s. 58-64
Emneord [en]
Air-water exchange, Baltic Sea, Bromoanisoles, Halogenated natural products, Methoxylated bromodiphenyl ethers
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Identifikatorer
URN: urn:nbn:se:umu:diva-126879DOI: 10.1016/j.marpolbul.2016.08.042ISI: 000386188900017PubMedID: 27575397OAI: oai:DiVA.org:umu-126879DiVA, id: diva2:1038546
Tilgjengelig fra: 2016-10-19 Laget: 2016-10-19 Sist oppdatert: 2019-04-09bibliografisk kontrollert

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