Distribution of arsenic, selenium, and other trace elements in high pyrite Appalachian coals: Evidence for multiple episodes of pyrite formation

Diehl, Sharon F.; Goldhaber, Martin B.; Koenig, Alan E.; Lowers, Heather A.; Ruppert, Leslie F.

doi:10.1016/j.coal.2012.01.015

Cited by 148 publications

(79 citation statements)

References 23 publications

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“…Ablation was performed with a singlepoint mode and a 50-lm beam size with a 70 % energy level. Analytical methodology was similar to that reported for pyrite samples analyses by Diehl et al (2012).…”

Section: Sample Preparation and Chemical Analysismentioning

confidence: 50%

Geochemical background of potentially toxic trace elements in soils of the historic copper mining area: a case study from Miedzianka Mt., Holy Cross Mountains, south-central Poland

et al. 2015

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The aim of this study was to evaluate the geochemical background and spatial distribution patterns of selected trace elements (As, Cd, Cr, Cu, Mn, Ni, Pb, U and Zn) in 62 surface soil samples collected in the historic Cu mining area (Miedzianka Mt., Holy Cross Mountains, south-central Poland). In the study area the mining activity dates back to the fourteenth century. After the shutdown of mining operations in 1953, the soil was not remediated and neither its mineralogy nor chemistry was examined. The examined soils showed a high variability in the element concentrations. The threshold values defined as the upper limits of geochemical background range (mg kg -1 in parentheses) were Cr (63), Mn (2156), Ni (39), Cu (52), Zn (175), As (36), Cd (2), Pb (73) and U (1.9). A high percentage of the samples exhibited trace element concentrations above the upper limit of the geochemical background range. The threshold values were evaluated in this study with application of the iterative 2r-technique. All of these values exceeded the standards recommended for soils in protected areas of Poland. The sampling points with anomalous concentrations of potentially toxic trace elements were located mostly in southern and western parts of the study area close to the sites of former mining activities. Very high concentrations of As, Cr and Ni at several sites may adversely influence the environment. High positive correlations between all the determined elements may be indicative of a common geogenic source of these elements and their geochemical affinity.

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Section: Sample Preparation and Chemical Analysismentioning

confidence: 50%

Geochemical background of potentially toxic trace elements in soils of the historic copper mining area: a case study from Miedzianka Mt., Holy Cross Mountains, south-central Poland

et al. 2015

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“…It can also organically bounded to organic matter (HgOM) (Rumayor et al 2015), or even as HgS and metallic mercury (Hg 0 ) (Finkelman 1994;Yudovich and Ketris 2005). It is clear that mercury is mostly associated with pyrite, especially late-stage (epigenetic) pyrite deposited from hydrothermal basinal fluids (Hower et al 2007;Diehl et al 2012;Kolker 2012). Besides, Mercury derived from the igneous intrusion distributed in both the organic matter and the minerals (Dai et al 2012c).…”

Section: Introductionmentioning

confidence: 99%

The distribution and occurrence of mercury in Chinese coals

Bai

Wang

et al. 2017

Int J Coal Sci Technol

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Mercury is one of the most concerned hazardous elements in coals. 1018 coal samples of different coal-forming periods, coal-accumulating areas and coal ranks all over the country were collected to study the distributions of mercury in Chinese coals. The modes of occurrence of mercury were studied with float-sink experiments of 10 coals from different basins in China and correlation analyses were conducted between concentrations of mercury and maceral and sulfur contents, as well as the ash yield. The theoretic concentrations and affinities of mercury in vitrinite, inertinite, clay and pyrite were then calculated following the methods proposed by Solari. The weighted average concentration of mercury in Chinese coals is 0.154 lg/g, which is similar to that in the word coals in general. The mercury concentrations vary largely in the coals of different coal-forming period and coal-accumulating areas as geological settings play key roles in determining the geochemistry of mercury. The concentrations of mercury in coals from south and southwest China and those from North China of C 3 -P 1 are relatively higher while those from North China of J 1-2 and Northeast of J 3 -K 1 relatively lower. The general distribution trends of mercury are very similar to that of ash yield, sulfur contents in coals. Pyrite is the dominant carrier of mercury in most coals, especially in some high-sulfur coals with abundant epigenetic pyrite formed during diagenesis and metamorphism. Mercury has higher affinity to vitrinite than to inertinite in most coals, which accords with the geological origin of macerals and geochemistry of mercury.

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“…The health and environmental threats posed by inorganic toxic elements in coal are the potential release of these elements from coal to the environment during coal combustion and their potential hazard in groundwater if they are leached from coalmining waste, or from fly ash at disposal sites. Such hazards are of great public concern (Diehl et al 2012;Miller 2011;Schweinfurth 2003;Swaine & Goodarzi 1995; US EPA 2000; US Public Law 1990; Vejahati et al 2010;Zheng et al 1999). Nonetheless, the potential hazard of the inorganic toxic elements to the groundwater is beyond the scope of this study.…”

Section: Theoretical Frameworkmentioning

confidence: 96%

Geochemistry of Trace Elements as one of the Important Coal Quality Parameter: An Example from Balingian Coal, Malaysia

Sia¹,

Abdullah²

2017

JSM

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Distribution of arsenic, selenium, and other trace elements in high pyrite Appalachian coals: Evidence for multiple episodes of pyrite formation

Cited by 148 publications

References 23 publications

Geochemical background of potentially toxic trace elements in soils of the historic copper mining area: a case study from Miedzianka Mt., Holy Cross Mountains, south-central Poland

Geochemical background of potentially toxic trace elements in soils of the historic copper mining area: a case study from Miedzianka Mt., Holy Cross Mountains, south-central Poland

The distribution and occurrence of mercury in Chinese coals

Geochemistry of Trace Elements as one of the Important Coal Quality Parameter: An Example from Balingian Coal, Malaysia

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