| Mercury concentrations in a contaminated river system in Kazakhstan and biomonitoring of the local population |
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| 作者姓名： | Susanne M. Ullrich Huiwen HSIAO |
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| 作者单位： | School of Civil Engineering ＆ the Environment, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom |
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| 摘 要： | The River Nura in central Kazakhstan has been heavily contaminated by mercury （Hg） from an acetaldehyde plant located in the industrial city of Temirtau. The plant released Hg-containing wastewater into the river from the 1950s until the mid 1990s and strongly contaminated the bed sediments up to 25 km downstream. In addition, a local power station released an estimated 6 million tonnes of fly-ash into the water which has adsorbed much of the Hg and has become mixed with the natural sediments. River water,fish and agricultural land in the floodplain are also contaminated by Hg. Humans are exposed to Hg primarily via the consumption of contaminated fish from the river. A survey was undertaken in June/July 2005 to investigate Hg concentrations in river water, drinking water, sediments and fish. To estimate the risk posed to the local population, approximately 300 hair samples were collected from people living in villages near the most contaminated section of the river, at a distance of between 5 and 30 km downstream of the acetaldehyde plant, and their dietary habits were recorded. Mercury concentrations in river water ranged from 2-3 ng/L upstream of the source of the pollution to 348 ng/L downstream of the factory outfall pipe. Some drinking water wells close to the river were contaminated, but deeper wells had Hg concentrations below the detection limit.
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| 关 键 词： | 水体污染 甲基水银 河流 乙醛 生物监测 |
Mercury concentrations in a contaminated river system in Kazakhstan and biomonitoring of the local population |
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| Susanne M. Ullrich Huiwen HSIAO.Mercury concentrations in a contaminated river system in Kazakhstan and biomonitoring of the local population[J].Chinese Journal of Geochemistry,2006,25(B08):238-239. |
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| Abstract: | |
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| Keywords: | acetaldehyde methylmercury fish hair remediation |
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