The distribution and origin of trace elements in a UK coal; the importance of pyrite

Spears, D. A.; Manzanares-Papayanopoulos, L.I; Booth, C.A.

doi:10.1016/s0016-2361(99)00114-3

Cited by 63 publications

(21 citation statements)

References 8 publications

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“…In particular the values for Zn and Co should be treated with caution. Also obtained by a similar procedure to that adopted in the current work, but using a physically fractionated coal, are the values in columns 2 (Harworth coal, Spears et al, 1999a) and column 3 (Eggborough coal, Spears, 2002, Spears et al, 2007 for coals from the same coalfield. Comparing the values in the three columns reveals that there are similarities, but also some differences.…”

Section: Discussionmentioning

confidence: 99%

The geochemistry of environmentally important trace elements in UK coals, with special reference to the Parkgate coal in the Yorkshire–Nottinghamshire Coalfield, UK

Spears

Tewalt

2009

International Journal of Coal Geology

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The Parkgate coal of Langsettian age in the Yorkshire-Nottinghamshire coalfield is typical of many coals in the UK in that it has a high sulphur (S) content. Detailed information on the distribution of the forms of S, both laterally and vertically through the seam, was known from previous investigations. In the present work, 38 interval samples from five measured sections of the coal were comprehensively analysed for major, minor and trace elements and the significance of relationships established using both raw and centered logtransformed data.The major elements are used to quantify the variations in the inorganic and organic coal components and determine the trace element associations. Pyrite contains nearly all of the Hg, As, Se, Tl and Pb and is also the major source of the Mo, Ni, Cd and Sb. The clays contain the following elements in decreasing order of association: Rb, Cs, Li, Ga, U, Cr, V, Sc, Y, Bi, Cu, Nb, Sn, Te and Th. Nearly all of the Rb is present in the clay fraction, whereas for elements such as V, Cu and U, a significant amount is thought to be present in the organic matter, based on the K vs trace element regression equations. Only Ge, and possibly Be, would appear to have a dominant organic source. The trace element concentrations are 2 calculated for pyrite, the clay fraction and organic matter. For pyrite it is noted that concentrations agree with published data from the Yorkshire-Nottinghamshire coalfield and also that Tl concentrations (median of 0.33 ppm) in the pyrite are greater than either Hg or Cd. Unlike these elements, Tl has attracted less attention and possibly more information is needed on its anthropogenic distribution and impacts on man and the environment. A seawater source is thought to be responsible for the high concentrations of S, Cl and the nondetrital trace elements in the Parkgate coal. Indicative of the seawater control is the Th/U ratio, which expresses the detrital to non-detrital element contributions. Using other elements, similar ratios can be calculated, which in combination offer greater interpretative value.

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Section: Discussionmentioning

confidence: 99%

The geochemistry of environmentally important trace elements in UK coals, with special reference to the Parkgate coal in the Yorkshire–Nottinghamshire Coalfield, UK

Spears

Tewalt

2009

International Journal of Coal Geology

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“…Hazardous air pollutants, released during coal utilization, are common in sulfide minerals occurring in coal (Weise et al 1990, Spears et al 1999, Dai et al 2003, Yudovich & Ketris 2005, Ketris & Yudovich 2009, Diehl et al 2012, Kolker 2012, Bielowicz 2013, KokowskaPawłowska 2014, Adamczyk et al 2015. According to the data of the National Centre for Emissions Management approved by the Ministry of Environment, the total emission of main air pollutants in Poland in 2013 (in thousand tons) was as follows: sulfur dioxide -847, nitrogen oxides -798, carbon dioxide -322,900, carbon oxide -2876, volatile non-methane organic compounds -919, ammonia -263, and particulates -407 (Environment 2015).…”

Section: Introductionmentioning

confidence: 99%

The forms of occurrence and geochemistry of sulfides in hard coal deposits of the Libiąż Beds in the Upper Silesian Coal Basin, Southern Poland

Bielowicz

Misiak

2017

geol

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Samples of coal from the eastern part of the Upper Silesian Coal Basin, between Jaworzno and Libiąż, were collected from test boreholes and underground excavations in the Janina Coal Mine, southwest Poland. The No. 111-119 hard coal seams are in the upper part of the Cracow Sandstone Series (the Libiąż Beds, Westphalian D). Macroscopically, iron sulfides (pyrite and marcasite) found in hard coal seams are usually in vein and impregnation forms. On the basis of microscopic observations, the following forms of iron sulfides occurrence in the studied coal were observed: framboidal pyrite, euhedral crystals, skeletal and massive vein forms, or pocket-like (impregnation) forms. On the basis of SEM-EDS analysis and X-ray diffraction it can be stated that the iron sulfides observed in coal are a mixture of pyrite and marcasite. WDS analysis in the micro area revealed the chemical composition of sulfides. The iron sulfides contain admixtures of Pb, Hg, Zn, Cu, Au, Ag, Sb, Co, and Ni. There was no As and Cd found in the examined minerals. It has been shown that the tested iron sulfides do not include significant admixtures. There is only a slight enrichment in lead in the vein forms of sulfides. In addition to the iron sulfides, individual inclusions of galena and sphalerite within the pyrite and marcasite have been observed. When it comes to iron sulfides in the vicinity of the crystallized galena, no lead (Pb) in the pyrites can be observed.

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“…2012) is not high, it has strong burst (see Table 7), indicating that it has striking study results and high level of attention in 2012, and therefore it can be used as a reference for research focuses and trends. The enrichment origin [26] and modes of occurrence [27,28] of trace elements in coal, especially those with highly environmental concerns such as Hg, As, F [5,6] and Se, Te [29], and those with highly economic added values [30] such as Ge, Ga, Nb and rare earth elements [31][32][33][34][35] are strongly concerned. X-ray diffraction is a common method for determination of minerals related to toxic and valuable (critical) elements in coal [36] (see Table 6).…”

Section: Co-citation Analysis Of Publicationsmentioning

confidence: 99%

Mapping of Trace Elements in Coal and Ash Research Based on a Bibliometric Analysis Method Spanning 1971–2017

et al. 2018

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Abstract:Coal is the most important fossil energy used in China. The environmental impact of trace elements released in coal combustion has become one of the hottest issues in recent years. Based on a software named CiteSpace, and social network analysis (SNA), a bibliometric analysis of research into trace elements in coal and ash field during 1971-2017 is presented with the information of authors, countries, institutions, journals, hot issues and research trends in the present study. (6) The enrichment origin and modes of occurrence of trace elements are the mainstream research related to trace elements in coal and ash. The environmental problems caused by coal combustion have promoted the development of trace elements in coal research, and human health is getting more and more popular in recent years. The study findings provide a better understanding of features of trace elements in coal and ash research, which could be taken as a reference for future studies in this field.

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The distribution and origin of trace elements in a UK coal; the importance of pyrite

Cited by 63 publications

References 8 publications

The geochemistry of environmentally important trace elements in UK coals, with special reference to the Parkgate coal in the Yorkshire–Nottinghamshire Coalfield, UK

The geochemistry of environmentally important trace elements in UK coals, with special reference to the Parkgate coal in the Yorkshire–Nottinghamshire Coalfield, UK

The forms of occurrence and geochemistry of sulfides in hard coal deposits of the Libiąż Beds in the Upper Silesian Coal Basin, Southern Poland

Mapping of Trace Elements in Coal and Ash Research Based on a Bibliometric Analysis Method Spanning 1971–2017

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