Geological and anthropogenic factors influencing mercury speciation in mine wastes: an EXAFS spectroscopy study

Kim, Christopher S.; Rytuba, James J.; Brown, Gordon E.

doi:10.1016/s0883-2927(03)00147-1

Cited by 117 publications

(83 citation statements)

References 38 publications

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“…The photograph at left shows mining residues in Wanshan. The Hg concentrations of these residues are relatively low (15-35 mg/kg [14]) compared with those from the mines in Idrija, Slovenia (15); the Humboldt River, Nev., U.S. (16); and the Sulphur Bank mine, Calif., U.S. (17). However, the large amount of mining residues in Wanshan will be a potential source of the toxic metal and a threat to the health of local residents for years.…”

Section: Hg and Au Miningmentioning

confidence: 99%

Mercury Pollution in China

Jiang

Shi²,

Feng³

2006

Environ. Sci. Technol.

305

116

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Section: Hg and Au Miningmentioning

confidence: 99%

Mercury Pollution in China

Jiang

Shi²,

Feng³

2006

Environ. Sci. Technol.

305

116

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“…In solid matrices and industrial samples, Hg can be found as e.g. HgS (cinnabar, metacinnabar), HgCl 2 , HgO, HgSO 4 , with different degrees of solubility and temperature stability [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Temperature stability of mercury compounds in solid substrates

et al. 2014

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Abstract:The major aim of the newly adopted Mercury Convention is to reduce global mercury (Hg) emissions to the environment. In high temperature industrial processes, including coal combustion, Hg compounds present as impurities in solid materials are decomposed and evaporated leading to the emission of Hg to the atmosphere. The behaviour of different Hg compounds and their mixtures during heating have been the subject of numerous studies, and is the topic of the present work. Controlled heating can be used to fractionate Hg compounds in solid substrates, offering the possibility of identification and quantification of Hg compounds. In the attempt to develop a method for temperature fractionation of Hg, experiments were conducted with pure Hg compounds, and the compounds mixed with different substrates (SiO 2 and CaSO 4 • 2H 2 O), for calibration purposes. Detection was performed by two methods, namely Cold Vapour Atomic Absorption Spectrometry (CV AAS) with Zeeman background correction, and Nier-type Mass Spectrometry with a Knudsen cell (MS). Further investigation is in process.

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“…Research has shown that in areas where the dominant Hg source is cinnabar, the Au extraction processes alter cinnabar to meta-cinnabar, a more soluble form (Gemici & Oyman, 2003;Moncur et al, 2005). Such a change allows Hg to be more susceptible to physical weathering, permitting an enrichment of Hg in fine-grained sediments and possible methalization later due to environmental effects (Slowey et al, 2007a(Slowey et al, , 2007bKim et al, 2004;Harikumar & Jisha, 2010).…”

Section: Transport Of Contaminates In Wet Climatesmentioning

confidence: 99%

Mining Activities and Associated Environmental Impacts in Arid Climates: A Literature Review

Sims¹,

Hooda²,

Gillmore³

2013

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Mining operations have released measurable levels of geogenic trace metals (e.g. Cd, Cr, Pb), metalloids (e.g. As, Se), and anthropogenic chemicals (e.g. CN -, Hg) into surrounding sediments. Abandoned mining sites in hyperarid climates has not been the focus of much research compared to wet and temperate areas. Research has focused on historical mining sites in semiarid and wetter regions in the United States, south pacific and Europe. Those areas have obvious risks associated with them including aqueous phase mobilization as a result of abundant precipitation. However, many mining areas in the American Southwest and aboard are located in hyperarid regions and viewed as not having a potential for mobilization of contaminants. Seasonal storm events can mobilize sediments containing contaminates beyond a small, localized area and into the wider environment. Literature indicates that arid and hyperarid mining regions have not been studied as extensively as those in wetter climates.

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Geological and anthropogenic factors influencing mercury speciation in mine wastes: an EXAFS spectroscopy study

Cited by 117 publications

References 38 publications

Mercury Pollution in China

Mercury Pollution in China

Temperature stability of mercury compounds in solid substrates

Mining Activities and Associated Environmental Impacts in Arid Climates: A Literature Review

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