Abundance and modes of occurrence of mercury in some low-sulfur coals from China

Liugen Zheng, Guijian Liu, Chen-Lin Chou

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Mercury (Hg) is one of the hazardous trace elements in coal. Mercury in coal is almost totally emitted into the atmosphere during coal combustion. Especially for utilities burning low-sulfur coals that do not require scrubbers, Hg reduction will be neglected. Hg abundances of 52 low-sulfur coal samples from different coalfields in six provinces of China were determined by a flow injection mercury system (FIMS). The results show that Hg abundances in selected low-sulfur coals range from 0.03 ppm to 0.79 ppm, with an arithmetic mean of 0.24 ppm, which is higher than that of average Chinese coals (0.19 ppm). Correlation analysis and sequential extraction procedures are performed to study possible modes of occurrence of Hg in low-sulfur coals. Modes of occurrence of Hg are variable in low-sulfur coals, and the sulfide-bound and organic-bound Hg may be the dominant forms. In addition, the silicate-bound Hg may be the main form in some of these coals because of magmatic intrusion.
Original languageEnglish (US)
Title of host publicationTSOP 2006: Papers from the 23rd Annual Meeting of TSOP
EditorsShifeng Dai, Chen-Lin Chou
Number of pages8
StatePublished - 2008
Event2006 Annual Meeting of the Society for Organic Petrology - Beijing, China
Duration: Sep 15 2006Sep 22 2006
Conference number: 23

Publication series

NameInternational Journal of Coal Geology
ISSN (Print)0166-5162


Conference2006 Annual Meeting of the Society for Organic Petrology
Abbreviated titleTSOP 2006


  • ISGS
  • Low-sulfur coal
  • Abundance and mode of occurrence
  • Chinese coals
  • Mercury

ASJC Scopus subject areas

  • Economic Geology
  • Geology
  • Fuel Technology
  • Stratigraphy


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