TY  - JOUR
A1  - Zhao, Qiaojing
A1  - Li, Xin
A1  - Wang, Jun
A1  - Zhang, Minmin
A1  - Zhao, Cunliang
A1  - Zhao, Jing
A1  - Panchal, Balaji
A1  - Ma, Jialiang
T1  - Occurrence of harmful elements in the ‘high-aluminium coals’ from the Pingshuo mining district, Shanxi Province, China
T2  - Energy exploration & exploitation
N2  - "High-aluminous coal" is an important coal kind and widely distributed in North China in age of Permo-Carboniferous period. To explore their occurrence state, a total of 15 harmful elements (Li, Ga, In, Cd, Cr, Pb, Be, Mn, Zn, Ag, Co, Ni, Cu, Ba and U) in the No.9 coal and No.11 coal collected from Pingshuo mining district were determined by inductively coupled plasma mass spectrometry (ICP-MS) and scanning electron microscope with energy spectrum (SEM-EDX). The results showed that the content of Li, Ga, In, Pb, Ag and U were all exceed the world hard coal. In view of the result of clustering analysis within trace elements, it was found that Co, Ni, Zn, Cu, Ag and Cr were mainly associated with sulfide minerals due to their common sulfophilic property. Manganese was mainly occurred in carbonate minerals, while Ba, Cd and U were mainly associated with total minerals. In addition, Pb was related to sulfides and Be is mainly distributed in clay minerals. The enrichment of such harmful elements in Pingshuo coal was caused by the combined effect of transgression and input of terrestrial materials in the peat accumulation stage. Li, Ga, In and Ag have reached the harmful grade.
KW  - Pingshuo mining district
KW  - harmful elements
KW  - enrichment factor
KW  - occurrence state
KW  - peat environment
Y1  - 2022
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/85509
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-855095
SN  - 2048-4054
N1  - This work was supported by the National Natural Science Foundation of China, National Nature Science Foundation of Hebei Province, (grant number No. 41330317, D2020402013).
VL  - 40
IS  - 3
SP  - 977
EP  - 994
PB  - Sage Publications
CY  - Thousand Oaks, CA
ER  -