Mode of occurrence of trace elements in the Pellana lignite (SE Peloponnese, Greece)

Chatziapostolou, A.; Kalaitzidis, Stavros; Papazisimou, S.; Christanis, Kimon; Vagias, D.

doi:10.1016/j.coal.2005.04.005

Cited by 22 publications

(7 citation statements)

References 34 publications

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“…(3) Oil shale samples exhibit high organic sulfur content, whereas the content for the micritic limestone samples is lower. Similar vertical variations are observed for P. P is useful nutrients for plant growth [31], and P may be regarded as an element associated with high productivity [32][33]. The combination of high productivity and anoxic environment is in favour of the deposition of oil shale [10] and this could explain the consistent variations between organic sulfur content and P content.…”

Section: Vertical Distribution Of the Elementssupporting

confidence: 61%

Geochemistry of Rare Earth Elements in Marine Oil Shale – A Case Study From the Bilong Co Area, Northern Tibet, China

Fu¹,

Wang²,

Zeng³

et al. 2010

Oil Shale

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The Bilong Co oil shale zone is located in the South Qiangtang depression. This zone, together with the Shengli River-Changshe Mountain oil shale zone in the North Qiangtang depression, northern Tibet plateau, represents a potentially large marine oil shale resource in China. The content and modes of occurrence of rare earth elements (REEs) in selected oil shale samples from the Bilong Co area were studied by inductively-coupled plasma mass spectrometer (ICP-MS) and statistical methods, respectively. The total organic carbon (TOC) content (6.75-19.20%) of oil shale samples is high with low or moderate total sulfur (St, d) content (1.05-2.00%) and intermediate shale oil content. The total rare earth element (∑REE) content of oil shale samples ranges from 63.69 to 117.85 µg/g. The average REE content of 13 oil shale samples from the Bilong Co area is slightly higher than that of USA coals and micritic limestone samples from the Bilong Co area, but lower than that of worldwide black shales. The oil shale samples from the Bilong Co area show shale-like chondrite or NASC-normalized REE patterns similar to those of micritic limestone samples from this area, indicating that REEs of these different lithological samples may have been derived from a similar terrigenous source. REE content of oil shale samples is highly positively correlated with ash yield and shows a positive correlation with Fe and a negative correlation with organic sulfur, and the vertical variations of REEs mainly follow those of Si, Al, K, Na and Ti. All these facts indicate that the REE content in oil shale seams is mainly controlled by clay minerals and, to a less extent, by pyrite, as well as partly associated with oil shale organic constituents.

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Section: Vertical Distribution Of the Elementssupporting

confidence: 61%

Geochemistry of Rare Earth Elements in Marine Oil Shale – A Case Study From the Bilong Co Area, Northern Tibet, China

Fu¹,

Wang²,

Zeng³

et al. 2010

Oil Shale

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“…Singh et al (1996) reported the presence of U in groundwater and surface water of some Indian regions as a result of its natural occurrence and also due to man-made activities like mining and milling of lignite and uranium rocks. Moreover, U content for other Greek bulk lignite's samples (varying between 0.1 and 4.1 mg kg -1 ) has also been reported by Chatziapostolou et al (2006). According to Zamora et al (1998), the long-term ingestion of groundwater with U content varying between 2 and 781 lg L -1 affects human kidney function.…”

Section: Classification Of Groundwatermentioning

confidence: 78%

Groundwater quality assessment in Oropos–Kalamos basin, Attica, Greece

et al. 2011

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Groundwater samples were collected from 25 sampling sites of the Oropos-Kalamos basin aiming to describe the groundwater quality in relation to geology, lithology and anthropogenic activities of the study area. Chromium speciation analysis, factor analysis, GIS database and geochemical data proved successful tools for the identification of natural and anthropogenic factors controlling the geochemical data variability and for the identification of the redox couple controlling Cr speciation. A Durov diagram is used to classify groundwater quality into five types: Ca-HCO 3 , Mg-HCO 3 , Na-Cl, Mg-Cl and Ca-Cl. The groundwater quality of Oropos-Kalamos is influenced by various natural and anthropogenic factors. Evaluation of water quality for drinking and irrigation purposes is discussed.

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“…Statistically analysing the trace element data from a suite of coals is a long-established method to obtain element associations. This was done for a representative of UK coals by Spears and Zheng (1999) and most recently for other coals and lignites by Chatziapostolou et al (2006), Kalkreuth et al (2006) and Song et al (2007). There is considerable current interest in trace elements in coals as these, and other recent papers demonstrate (for example Brownfield et al, 2005;Wagner and Hlatshwayo, 2005;Dai et al, 2006;Parzentny and Lewinska-Preis, 2006;Yang, 2006;Hower et al, 2007).…”

Section: Introductionmentioning

confidence: 97%

Use of laser ablation ICP-MS to determine trace element distributions in coals, with special reference to V, Ge and Al

Spears

Borrego

Cox

et al. 2007

International Journal of Coal Geology

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Mode of occurrence of trace elements in the Pellana lignite (SE Peloponnese, Greece)

Cited by 22 publications

References 34 publications

Geochemistry of Rare Earth Elements in Marine Oil Shale – A Case Study From the Bilong Co Area, Northern Tibet, China

Geochemistry of Rare Earth Elements in Marine Oil Shale – A Case Study From the Bilong Co Area, Northern Tibet, China

Groundwater quality assessment in Oropos–Kalamos basin, Attica, Greece

Use of laser ablation ICP-MS to determine trace element distributions in coals, with special reference to V, Ge and Al

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