Concentrations and distributions of trace and minor elements in Chinese and Canadian coals and ashes

Sun Jingxin; R. Jervis

doi:10.1007/bf02048879

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 114: Issue 1

Concentrations and distributions of trace and minor elements in Chinese and Canadian coals and ashes

Authors:

Sun Jingxin

Sun Jingxin Academia Sinica Application Division of Nuclear Technology, Institute of High Energy Physics P.O. Box 2732 Beijing China

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and

R. Jervis

R. Jervis University of Toronto Dept. of Chemical Engineering and Applied Chemistry M5S 1A4 Toronto Canada

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Pages:: 89–99

Online Publication Date:: 13 Aug 2005

Publication Date:: 17 Aug 1987

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02048879

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Abstract

A total of 35 trace and minor elements including some of environmental significance were determined in each of a selection of 15 Chinese and 6 Canadian thermal coals and their ashes by using the SLOWPOKE-2 nuclear reactor facility of the University of Toronto. The concentrations and distributions of these constituents among the coals and their combustion products (viz. ash and volatile matter) are presented together with an interpretation of their significance in relation to the large scale combustion of these coals as thermal fuels in industrialized countries such as China and Canada. The detailed results showed wide variations in trace impurity concentrations (up to a factor of 100 and more) among the coals studied with few large differences between those of Chinese and Canadian origin except that the rare earths, Sc, Th, U, I, and Se were much higher in the former, other halogens, As and Na were lower. Values for elemental enrichment factors (EF) relative to normal crustal abundances indicated that only As(EF=13), Br(5.7), I(16), S(230), Sb(11) and Se(320) were appreciably enriched in coal. During static ashing at 750°C most of the halogens, S and Se were volatilized whereas most other inorganic constituents were highly retained and concentrated in the ash by factors of 6 to 11.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)