Methyl mercury contamination and emission to the atmosphere from soil amended with municipal sewage sludge

被引:30
作者
Carpi, A
Lindberg, SE
Prestbo, EM
Bloom, NS
机构
[1] Cornell Univ, Boyce Thompson Inst Plant Res, Ithaca, NY 14853 USA
[2] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA
[3] Frontier Geosci Inc, Seattle, WA 98109 USA
关键词
D O I
10.2134/jeq1997.00472425002600060027x
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In an effort to identify the effect of municipal sewage sludge application on mercury (Hg) concentrations in soil, we studied the contamination of sludge-amended soil with inorganic ant methyl Hg and the emission of these contaminants to the atmosphere using a Teflon dynamic flux chamber. The routine application of municipal sewage sludge to cropland significantly increased both total and methyl Hg in surface soil from 80 to 6100 mu g kg(-1) and 0.3 to 8.3 mu g kg(-1), respectively. Both inorganic and methyl Hg were transported from the sludge/soil matrix to the environment by emission to the atmosphere, however, there was no indication of Hg transport in limited soil water lysimeter experiments. Our data from soil amended with municipal sewage sludge represent the first quantitatively measured terrestrial source of methyl mercury (MeHg) to the atmosphere. Sludge-amended soil emitted an average of 12 to 24 pgm (2)h(-1) of monomethyl Hg and similar to 100 ng m(-2)h(-1) of inorganic Hg to the atmosphere. A simple dispersion model suggests that sludge-amended soil may increase regional atmospheric MeHg concentrations by similar to 5%. these data highlight the need for further research to quantify the transport of Hg from sludge-amended soil and identify the sources of MeHg in the atmosphere.
引用
收藏
页码:1650 / 1655
页数:6
相关论文
共 44 条
[1]  
BALLANTINE DS, 1984, ANAL CHEM, V56, P1288, DOI 10.1021/ac00272a022
[2]   DETERMINATION OF VOLATILE MERCURY SPECIES AT THE PICOGRAM LEVEL BY LOW-TEMPERATURE GAS-CHROMATOGRAPHY WITH COLD-VAPOR ATOMIC FLUORESCENCE DETECTION [J].
BLOOM, N ;
FITZGERALD, WF .
ANALYTICA CHIMICA ACTA, 1988, 208 (1-2) :151-161
[3]  
BLOOM NS, 1996, 4 INT C MERC GLOB PO
[4]  
BLOOM NS, 1995, GEOC, V62
[5]   MERCURY AND SELENIUM CONTENT AND CHEMICAL FORM IN VEGETABLE CROPS GROWN ON SLUDGE-AMENDED SOIL [J].
CAPPON, CJ .
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 1981, 10 (06) :673-689
[6]   Sunlight-mediated emission of elemental mercury from soil amended with municipal sewage sludge [J].
Carpi, A ;
Lindberg, SE .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1997, 31 (07) :2085-2091
[7]  
CARPI A, 1997, THESIS CORNELL U ITH
[8]  
CARPI A, 1997, IN PRESS ATMOS ENV
[9]   BASE-LINE CONCENTRATION AND SPECIATION OF ATMOSPHERIC MERCURY AT BARING HEAD (410S), NEW-ZEALAND [J].
DEMORA, SJ ;
BIBBY, DM ;
PATTERSON, JE .
ENVIRONMENTAL TECHNOLOGY, 1991, 12 (10) :943-946
[10]  
*EL POW RES I, 1994, TR104214 EPRI EXP PA