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Sequential solvent extraction for forms of antimony in five selected coals

January 1, 2008

Abundance of antimony in bulk samples has been determined in five selected coals, three coals from Huaibei Coalfield, Anhui, China, and two from the Illinois Basin in the United States. The Sb abundance in these samples is in the range of 0.11-0.43 ??g/g. The forms of Sb in coals were studied by sequential solvent extraction. The six forms of Sb are water soluble, ion changeable, organic matter bound, carbonate bound, silicate bound, and sulfide bound. Results of sequential extraction show that silicate-bound Sb is the most abundant form in these coals. Silicate- plus sulfide-bound Sb accounts for more than half of the total Sb in all coals. Bituminous coals are higher in organic matterbound Sb than anthracite and natural coke, indicating that the Sb in the organic matter may be incorporated into silicate and sulfide minerals during metamorphism. ?? 2008 by The University of Chicago. All rights reserved.

Citation Information

Publication Year 2008
Title Sequential solvent extraction for forms of antimony in five selected coals
DOI 10.1086/529155
Authors C. Qi, Gaisheng Liu, Y. Kong, C. L. Chou, R. Wang
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Geology
Series Number
Index ID 70031818
Record Source USGS Publications Warehouse
USGS Organization