Centennial records of lead contamination in northern Atlantic bivalves (Arctica islandica)

MARINE POLLUTION BULLETIN

卷:64

Article

Krause-Nehring, Jacqueline¹  Brey, Thomas¹  Thorrold, Simon R.² 

[1] Alfred Wegener Inst Polar & Marine Res, D-27570 Bremerhaven, Germany

[2] Woods Hole Oceanog Inst, Biol Dept MS 50, Woods Hole, MA 02543 USA

关键词: Arctica islandica;    Bivalve;    Bioarchive;    Lead pollution;    Temperate northern Atlantic;   

DOI  :  10.1016/j.marpolbul.2011.11.028

来源: Elsevier

【 摘 要 】

In the study, we establish centennial records of anthropogenic lead pollution at different locations in the North Atlantic (Iceland, USA, and Europe) by means of lead deposited in shells of the long-lived bivalve Arctica islandica. Due to local oceanographic and geological conditions we conclude that the lead concentrations in the Icelandic shell reflect natural influxes of lead into Icelandic waters. In comparison, the lead profile of the US shell is clearly driven by anthropogenic lead emissions transported from the continent to the ocean by westerly surface winds. Lead concentrations in the European North Sea shell, in contrast, are dominantly driven by local lead sources resulting in a much less conspicuous 1970s gasoline lead peak. In conclusion, the lead profiles of the three shells are driven by different influxes of lead, and yet, all support the applicability of Pb/Ca analyses of A. islandica shells to reconstruct location specific anthropogenic lead pollution. (C) 2011 Elsevier Ltd. All rights reserved.

【 授权许可】

Free