Distribution of sedimentary mercury off Svalbard, European Arctic

被引：19

作者：

Beldowski, J. ^{[1
]}

Miotk, M. ^{[1
]}

Zaborska, A. ^{[1
]}

Pempkowiak, J. ^{[1
]}

机构：

[1] Inst Oceanol, Sopot, Poland

来源：

CHEMOSPHERE | 2015年 / 122卷

关键词：

Solid speciation; Methyl-mercury; Organic mercury; Spitsbergen; Fjords; Barents Sea; ACCUMULATION RATES; SURFACE SEDIMENTS; MARINE-SEDIMENTS; HEAVY-METALS; SPECIATION; KONGSFJORDEN; BIOAVAILABILITY; METHYLMERCURY; SPITSBERGEN; TRANSPORT;

D O I：

10.1016/j.chemosphere.2014.11.050

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The European Arctic, including the Svalbard archipelago, receives mercury loads due to long range atmospheric transport, local contamination, melting of glaciers and as a result of bedrock weathering. Few studies have been devoted to the contamination history and sources of sedimentary mercury in the Svalbard area. This knowledge gap is addressed in this study. Concentrations of total mercury (10-80 ng/g), fractions of mercury differing with affinity to the sediment matrix (88-97% refractory, 3-12% mobile), organic and methyl mercury (100-500 pg/g) were measured in surface and subsurface sediments in the Spitsbergen fjords and in the Barents Sea off Svalbard. The atmospheric mercury signal can be observed in the Barents Sea, while in the Svalbard fjords it is strongly modified by supply of mercury from natural sources that may include weathering of rocks and glaciers melting, all modified by organic matter supply. Sedimentary methyl mercury concentrations seem to be dependent on environmental factors affecting mercury methylation rather than on location of sampling stations. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：190 / 198

页数：9

共 45 条

[1]

[Anonymous], 2011, ARCT MONIT ASSESS PR

[2] Mercury in dated Greenland marine sediments [J].