Detailed Pollution Map of an Area Highly Contaminated by Mercury Containing Wastewater from an Organic Chemical Factory in People's Republic of China

National Institute for Minamata Disease, Mizumata, Kumamoto, Japan
Bulletin of Environmental Contamination and Toxicology (Impact Factor: 1.26). 08/2006; 77(1):82-7. DOI: 10.1007/s00128-006-1035-6
Source: PubMed


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    • "In the industrial production of acetaldehyde at the Guizhou factory, metallic mercury and iron sulfates were used as catalysts to form mercury sulfate [10]. However, most of the mercury is initially released and deposited in deponent media in inorganic form, since inorganic mercury was shown to prevail in contaminated soils of the investigated areas [3] [4] [10] [11]. The mercury by-products, which could be released into the environment along with wastewater, vapor, gases, and aerosols, may include Hg(0), HgSO 4 , Hg 2 SO 4 , HgSO 4 * 2HgO, HgO, HgHSO 4 + , CH 3 Hg + , and other species. "
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    ABSTRACT: A chemical factory, using a production technology of acetaldehyde with mercury catalysis, was located southeast of Qingzhen City in Guizhou Province, China. Previous research showed heavy mercury pollution through an extensive downstream area. A current investigation of the mercury distribution in ambient air, soils, and plants suggests that mobile mercury species in soils created elevated mercury concentrations in ambient air and vegetation. Mercury concentrations of up to 600 ng/m(3) in air over the contaminated area provided evidence of the mercury transformation to volatile Hg(0). Mercury analysis of soil and plant samples demonstrated that the mercury concentrations in soil with vaporized and plant-absorbable forms were higher in the southern area, which was closer to the factory. Our results suggest that air monitoring using a portable mercury analyzer can be a convenient and useful method for the rapid detection and mapping of mercury pollution in advanced field surveys.
    The Scientific World Journal 09/2011; 11:1630-40. DOI:10.1100/2011/493207 · 1.73 Impact Factor
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    ABSTRACT: To determine the relationship between soluble methylmercury and soil characteristics which was contaminated by mercury, several experiments were conducted. As a result, a good correlation was founding between the leached methylmercury level from soil and the EC (electronic conductivity) level of soil. Moreover, to grasp the relationship between soluble methylmercury and soluble anions from soil, several anions (Cl(-), NO(3-), SO(4) (2-)) were measured using the ion chromatography method. Although the correlation coefficient was small (r = 0.40), only a correlation between the level of SO(4) (2-) and leached methylmercury was recognized.
    Bulletin of Environmental Contamination and Toxicology 03/2009; 82(3):363-6. DOI:10.1007/s00128-008-9612-5 · 1.26 Impact Factor