Mercury Isotopic Fractionation during Pedogenesis in a Tropical Forest Soil Catena (French Guiana): Deciphering the Impact of Historical Gold Mining

We used natural mercury (Hg) stable isotopes to investigate the Hg cycle in a rainforest soil catena (French Guiana) partially gold-mined during the early 1950s. Litterfall showed homogeneous Δ199Hg values [−0.18 ± 0.05‰, i.e., a modern gaseous elemental Hg (GEM) isotopic signature]. After litter de...

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Veröffentlicht in:	Environmental science & technology 2018-10, Vol.52 (20), p.11573-11582, Article acs.est.8b02186
Hauptverfasser:	Guédron, S, Amouroux, D, Tessier, E, Grimaldi, C, Barre, J, Berail, S, Perrot, V, Grimaldi, M
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical chemistry Chemical reduction Chemical Sciences Forest soils Fractionation Gold Gold mines & mining Historical metallurgy Humification Iron oxides Isotope fractionation Isotopes Leaves Litter fall Material chemistry Mercury Mercury (metal) Mercury compounds Mining or physical chemistry Organic matter Oxides Polymers Rainforests Reduction Signatures Soil formation Soil investigations Soils Stable isotopes Theoretical and Tropical forests
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