Occurrence, emissions and deposition of mercury during coal combustion in the Province Guizhou, China

被引:98
作者
Feng, XB [1 ]
Sommar, J
Lindqvist, O
Hong, YT
机构
[1] Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China
[2] Univ Gothenburg, Dept Inorgan Chem, SE-41296 Gothenburg, Sweden
关键词
atmospheric pollution; mercury speciation; precipitation; reactive gaseous mercury;
D O I
10.1023/A:1015846605651
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Forty-eight coal samples from the major coal mines in Guizhou were collected by means of subterranean channel sampling. The average mercury content in coal from this Chinese province is 0.53 mg kg(-1), which is substantially higher than coal produced in any other province of China. A strong link is proposed to exist between atmospheric mercury emissions and the combustion of coal. During the last two decades, the amount of mercury emitted from coal combustion in Guizhou has increased invariably to 8.3 tons in 1998. Being concentrated to the pyrite fraction in the coal, the implementation of physical coal cleaning is likely to be an effective way to reduce the mercury content. Total and fractionated mercury in air and precipitation was measured in the provincial capital. During a measurement campaign in October 1999, the reactive gaseous mercury (RGM) concentration averaged at 450 pg m(-3), which is much higher than that in pristine area (less than 20 pg m(-3)). The average total mercury in rainwater of 1996 was estimated to be 33 ng L-1, and the total annual wet deposition of mercury in the area was 39 g km(-2) in 1996.
引用
收藏
页码:311 / 324
页数:14
相关论文
共 26 条
[1]  
COUCH G, 1991, IEACR44
[2]   Modes of occurrence of mercury in coals from Guizhou, People's Republic of China [J].
Feng, X ;
Hong, Y .
FUEL, 1999, 78 (10) :1181-1188
[3]  
FENG X, 1998, ENVIRON CHEM, V17, P388
[4]  
FENG X, 1997, THESIS CHINESE ACAD
[5]  
FENG X, 1998, J INSTRUM ANAL, V12, P41
[6]   Modified on-line monitoring of total gaseous mercury in flue gases using Semtech® Hg 2000 analyzer [J].
Feng, XB ;
Sommar, J ;
Abul-Milh, M ;
Hong, B ;
Strömberg, D ;
Lindqvist, O .
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 2000, 368 (05) :528-533
[7]   Improved determination of gaseous divalent mercury in ambient air using KCl coated denuders [J].
Feng, XB ;
Sommar, J ;
Gårdfeldt, K ;
Lindqvist, O .
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 2000, 366 (05) :423-428
[8]  
FITZGERALD WF, 1984, TRACE METALS SEAWATE, P297
[9]  
*GOV GUIZH PROV, 1987, BAS INF GUIZH, P340
[10]   An overview of the municipal waste incineration industry in Asia and the former Soviet Union [J].
Hunsicker, MD ;
Crockett, TR ;
Labode, BMA .
JOURNAL OF HAZARDOUS MATERIALS, 1996, 47 (1-3) :31-42