贵州省务川汞矿区汞污染的初步研究
THE PRELIMINARY STUDY OF MERCURY POLLUTION IN WUCHUAN MERCURY MINING AREA,GUIZHOU PROVINCE
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摘要: 对贵州省务川汞矿区的大气、地表水和土壤中汞污染的调查表明,务川汞矿区大气汞浓度为7—40000 ng·m-3,超出正常大气汞浓度1—4个数量级.地表水总汞为43—2100 ng·l-1,远高于对照区(15—29 ng·l-1);活性汞、溶解态汞和颗粒态汞含量也显著高于对照区,颗粒态汞是地表水汞迁移的主要方式.土壤总汞含量为1.3—360 mg·kg-1,远高于对照区土壤总汞含量(0.22—0.39 mg·kg-1),土壤剖面汞含量的垂向递减反映了大气汞的沉降是土壤汞的重要来源之一;同一地点不同土地利用类型的土壤,一般为稻田总汞含量高于菜地和玉米地;土壤pH值和有机质影响着土壤中汞的迁移和富集.Abstract: Total Hg concentrations were evaluated in the ambient air,surface water and soil from Wuchuan Hg mining area,Guizhou Province,where also considered as a typical area of mercury smelting with indigenous method.Total gaseous mercury concentrations in the ambient air ranged from 7 to 40000 ng·m-3,which exceeded the background by 1—4 orders of magnitude.Total Hg contents in the surface water area ranged from 43—2100 ng·l-1,which were significant higher than 15—29 ng·l-1from control area.Reactive Hg,dissolve Hg and particulate Hg concentrations in the surface water also were much higher than that from control area and particulate Hg was the main route of the transport and enrichment of Hg.Total Hg concentrations in the soil from mining area ranged from 1.3 to 360 mg·kg-1,which were significant higher than 0.22—0.39 mg·kg-1 from control area.Total mercury distribution pattern in soil profiles indicated that mercury contaminations of top soils are derived from atmospheric mercury deposition.Obviously,total Hg concentration in soil from paddy field were much higher than from vegetation and corn field.The transport and enrichment of Hg in the soil were influenced by soil pH and organic matter contents.
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Key words:
- mercury /
- air /
- surface water /
- soil.
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[1] 李平,冯新斌,仇广乐等,贵州省务川汞矿区土法炼汞过程中汞释放量的估算.环境科学,2006,27(5):837-840
[2] Lindqvist O,Johansson K,Bringmark L et al.,Mercury in Swedish Environment:Recent Research on Causes,Consequences and Corrective methods.Water Air and Soil Pollution,1991,55:23-32
[3] Feng X,Tang S,Shang L et al.,Total Gaseous Mercury in the Atmosphere of Guiyang,PR China.The Science of the Total Environment,2003,304:61-72
[4] Feng X,Shang L,Wang S et al.,Temporal Variation of Total Gaseous Mercury in the Air of Guiyang,China.Journal of Geophysical Research,2004,109,D03303,doi:10.1029/2003JD004159
[5] 王少锋,汞矿化带土壤/大气界面汞交换通量研究.中国科学院研究生院博士学位论文,北京,2005
[6] Louis L,Chamberland A,Field Sampling and Analytical Intercomparison for Mercury and Methylmercury Determination in Natural Water.Water Air and Soil Pollution,1995,80:1247-1256
[7] Senesi G S,Baldassarre G,Senesi N et al.,Trace Element Inputs into Soils by Anthropogenic Activities and Implications for Human Health.Chemosphere,1999,39:343-377
[8] Forstner U,Metal Speciation:General Concepts and Applications.International Journal of Environmental Analytical Chemistry,1993,51:5-23
[9] Biester H,Muller G,Scholer HF,Estimating Distribution and Retention of Mercury in three Different Soils Contaminated by Emissions from Chlor-Alkali Plants:Part Ⅰ.The Science of Total Environment,2002,284:177-189
[10] Tomiyasu T,Okada M,Imura R et al.,Vertical Variations in the Concentration of Mercury in soils Around Sakurajima Volcano,Southern Kyushu,Japan.The Science of Total Environment,2003,304:221-230 -

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