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Publication . Article . 2014

Mercury Stable Isotope Signatures of World Coal Deposits and Historical Coal Combustion Emissions

Ruoyu Sun; Jeroen E. Sonke; Lars-Eric Heimbürger; Harvey E. Belkin; Guijian Liu; Debasish Shome; Ewa Cukrowska; +3 Authors
English
Published: 17 Jun 2014
Publisher: HAL CCSD
Country: France
Abstract
Mercury (Hg) emissions from coal combustion contribute approximately half of anthropogenic Hg emissions to the atmosphere. With the implementation of the first legally binding UNEP treaty aimed at reducing anthropogenic Hg emissions, the identification and traceability of Hg emissions from different countries/regions are critically important. Here, we present a comprehensive world coal Hg stable isotope database including 108 new coal samples from major coal-producing deposits in South Africa, China, Europe, India, Indonesia, Mongolia, former USSR, and the U.S. A 4.7‰ range in δ202Hg (−3.9 to 0.8‰) and a 1‰ range in Δ199Hg (−0.6 to 0.4‰) are observed. Fourteen (p < 0.05) to 17 (p < 0.1) of the 28 pairwise comparisons between eight global regions are statistically distinguishable on the basis of δ202Hg, Δ199Hg or both, highlighting the potential application of Hg isotope signatures to coal Hg emissions tracing. A revised coal combustion Hg isotope fractionation model is presented, and suggests that gaseous...
Subjects by Vocabulary

ACM Computing Classification System: ComputingMilieux_MISCELLANEOUS

Microsoft Academic Graph classification: Environmental engineering Isotope fractionation Chemical fractionation Isotope Mercury analysis Environmental science Mercury (element) chemistry.chemical_element chemistry Environmental chemistry Stable isotope ratio Coal business.industry business Coal combustion products

Medical Subject Headings: complex mixtures

Subjects

[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, Environmental Chemistry, General Chemistry

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