Background concentrations of polycyclic aromatic hydrocarbons (PAHs) in deep core sediments from the Norwegian Sea and the Barents Sea: A proposed update of the OSPAR Commission background values for these sea areas

被引：17

作者：

Boitsov, Stepan ^{[1
]}

Klungsoyr, Jarle ^{[1
]}

Jensen, Henning K. B. ^{[2
]}

机构：

[1] Inst Marine Res, POB 1870 Nordnes, N-5817 Bergen, Norway

[2] Geol Survey Norway NGU, Trondheim, Norway

来源：

CHEMOSPHERE | 2020年 / 251卷

关键词：

PAHs; Sediment; Barents Sea; Norwegian Sea; OSPAR; Background; MARGINAL ICE-ZONE; POLYAROMATIC HYDROCARBONS; MARINE-SEDIMENTS; ORGANIC CONTAMINANTS; ENVIRONMENTAL FATE; RISK-ASSESSMENT; CLIMATE-CHANGE; RECORD; POLLUTANTS; POLLUTION;

D O I：

10.1016/j.chemosphere.2020.126344

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Geochemical studies of 174 sediment cores collected by the MAREANO mapping program in Norwegian waters of the North Atlantic Ocean give new sets of values of background concentrations (BCs) for polycyclic aromatic hydrocarbons (PAHs) for the studied regions. The study is based on deep core sediment samples representing background levels of PAHs. The samples selected were only from the deeper parts of undisturbed sediment cores with low, stable concentrations of petrogenic and pyrogenic PAHs, with low variation for individual PAH compounds between the samples within the same core, and from below the parts of the cores dated with 210Pb to approximately the last 100-150 years. The results show that the main part of the studied area has BCs different from those previously established by OSPAR Commission (OSPAR) for the North-East Atlantic. Another area in central Barents Sea has a separate set of BCs of pyrogenic PAHs, apparently due to the influence from marginal ice zone mechanisms. A third area with its own set of BCs has been established for north-western Barents Sea off the coast of Svalbard, due to high natural contents of PAHs in this area. BCs for several PAHs not included in the present OSPAR list are also provided. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：12

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