Quantifying the impacts of artisanal gold mining on a tropical river system using mercury isotopes
作者: Sylvaine GoixLaurence MauriceLaure LaffontRaphaelle RinaldoChristelle LaganeJerome ChmeleffJohanna MengesLars-Eric HeimbürgerRégine Maury-BrachetJeroen E. Sonke
作者单位: 1Géosciences Environnement Toulouse (GET), Observatoire Midi Pyrénées, CNRS, IRD, Université de Toulouse, 31400 Toulouse, France
2Institut Écocitoyen pour la Connaissance des Pollutions, Centre de Vie La Fossette RD 268, 13270 Fos-sur-Mer, France
3Parc Amazonien de Guyane, 1 rue Lederson, Remire-Montjoly, Guyane française, France
4Aix Marseille Université, CNRS/INSU, Université de Toulon, IRD, Mediterranean Institute of Oceanography (MIO) UM 110, 13288, Marseille, France
5GFZ German Research Centre for Geosciences, Section 5.1: Geomorphology, Potsdam, Germany
6University of Bordeaux, UMR EPOC 5805, Place du Dr Peyneau, 33120 Arcachon, France
刊名: Chemosphere, 2018
来源数据库: Elsevier Journal
DOI: 10.1016/j.chemosphere.2018.12.036
关键词: Mercury stable isotopesMercury speciationArtisanal and small-scale gold mining (ASGM)French Guiana
原始语种摘要: Abstract(#br)In some locations, artisanal and small-scale gold-mining (ASGM) represents a significant source of anthropogenic Hg to freshwater environments. The Hg released from ASGM can contaminate aquatic fauna and pose health risks to downstream populations. Total Hg (THg) concentrations, speciation, and isotopic compositions were analyzed in water, suspended particulate matter, soil, and bottom sediment samples from pristine areas and in places of active and legacy gold mining along the Oyapock River (French Guiana) and its tributaries.(#br)Mass-independent fractionation (MIF) of even Hg isotopes in top soils (Δ 200 Hg = −0.06 ± 0.02‰, n = 10) implied the uptake of gaseous Hg (0) by plants, rather than wet deposition, as the primary Hg source. Odd isotope MIF was lower in deep soils...
全文获取路径: Elsevier  (合作)
影响因子:3.137 (2012)

  • mercury 
  • system 
  • mining 矿业
  • tropical 热带的
  • river