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TitleRelationships between trends in atmospheric mercury and mercury in aquatic biota
 
AuthorWang, F; Outridge, PORCID logo; Mason, R; Heimbürger-Boavida, L -E; Feng, X
SourceTechnical background report to the global mercury assessment 2018; by AMAP; UN Environment; 2019 p. 8.1-8.16 Open Access logo Open Access
LinksOnline - En ligne (complete volume - volume complet, PDF, 33.0 MB)
Image
Year2019
Alt SeriesNatural Resources Canada, Contribution Series 20180212
PublisherUnited Nations Environment Programme
Documentbook
Lang.English
Mediaon-line; digital
File formatpdf
ProvinceCanada; British Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut; Canada
NTS1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
Areaworld
Lat/Long WENS-180.0000 180.0000 90.0000 -90.0000
Subjectsenvironmental geology; Nature and Environment; Science and Technology; mercury geochemistry; biogeochemistry; atmospheric geochemistry; water geochemistry; biota; climate effects; pollution; Biology; Aquatic ecosystems; cumulative effects; Climate change; Environmental impact assessment
Illustrationsschematic representations; time series; location maps; plots; models; tables
ProgramEnvironmental Geoscience Management
Released2019 09 10
Abstract(unpublished)
The UNEP 2013 Minimata Convention, which Canada has ratified, seeks to reduce the mercury exposure of global wildlife and human populations mainly by reducing atmospheric emissions from industrial sources such as coal combustion, metal ore smelting, waste incineration, and artisanal gold and silver mining. However, the pathways and geochemistry involved between atmospheric emissions (which are mainly gaseous elemental Hg, Hg(0)) and the eventual accumulation of Hg in food chains (which is mainly monomethyl Hg, MeHg(II))are complex and relatively poorly understood. Aquatic systems are the main sources of MeHg in human diets, and so are key to understanding how and why Minimata-based regulations might reduce exposure. Here, we review the state of aquatic geochemistry science concerning Hg methylation processes, and ask the question whether biological Hg levels are directly related to atmospheric Hg emissions or not. The goal is to better understand the extent to which lower emissions will reduce human Hg exposure in different environments.
Summary(Plain Language Summary, not published)
Mercury is one of the most toxic of trace metals, and has a very complex chemistry in the environment. This literature review, conducted for the United Nations Environment Programme, aims to understand how global efforts to reduce industrial mercury emissions will affect human and wildlife exposure in future.
GEOSCAN ID311284

 
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