The use of sequential extraction to determine the distribution and modes of occurrence of mercury in Permian Huaibei coal, Anhui Province, China

被引：81

作者：

Zheng, Liugen ^{[1
,3
,4
]}

Liu, Guijian ^{[1
,2
]}

Qi, Cuicui ^{[1
]}

Zhang, Ying ^{[1
]}

Wong, Minghong ^{[3
,4
]}

机构：

[1] Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China

[2] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China

[3] Hong Kong Baptist Univ, Croucher Inst Environm Sci, Hong Kong, Hong Kong, Peoples R China

[4] Hong Kong Baptist Univ, Dept Biol, Hong Kong, Hong Kong, Peoples R China

来源：

INTERNATIONAL JOURNAL OF COAL GEOLOGY | 2008年 / 73卷 / 02期

基金：

中国国家自然科学基金;

关键词：

mercury (Hg); modes of occurrence; sequential extraction tests; coal; Huaibei coalfield;

D O I：

10.1016/j.coal.2007.04.001

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Sequential extraction tests using a Flow Injection Mercury System (FIMS) were done on 34 samples collected from the number 3, 4, 5, 7, and 10 coal seams in the Huaibei Coalfield; average total mercury (Hg) concentrations for the seams were 0.13, 0.18, 0.54, 0.34, and 0.19 mg/kg respectively. The average value for all of the coal samples was 0.26 mg/kg, which is higher than most Chinese and U.S. coals. Six modes of Hg occurrence were recognized, including: water-leach able, ion-exchangeable, organic-bound, carbonate-bound, silicate-bound, and sulfide-bound Hg. With rare exception, little Hg was found in water-soluble, ion-exchangeable or carbonate-bound forms. Sulfide-bound Hg and organic-bound Hg dominated seams 3, 4, and 10, whereas silicate-bound Hg dominated seams 5 and 7. The relatively high Hg values observed in seams 5 and 7, especially in parting samples, are attributed to Hg enrichment by magmatic intrusions. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：139 / 155

页数：17