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首页> 外文期刊>International Journal of Environmental Research and Public Health >Comparative Assessment of Heavy Metals in Drinking Water Sources in Two Small-Scale Mining Communities in Northern Ghana
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Comparative Assessment of Heavy Metals in Drinking Water Sources in Two Small-Scale Mining Communities in Northern Ghana

机译：加纳北部两个小型采矿社区饮用水源中重金属的比较评估

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The study assessed levels of heavy metals in drinking water sources in two small-scale mining communities (Nangodi and Tinga) in northern Ghana. Seventy-two (72) water samples were collected from boreholes, hand dug wells, dug-out, and a stream in the two mining communities. The levels of mercury (Hg), arsenic (As), lead (Pb), zinc (Zn), and cadmium (Cd) were determined using an atomic absorption spectrophotometer (AAS). Mean levels (mg/l) of heavy metals in water samples from Nangodi and Tinga communities were 0.038 and 0.064 (Hg), 0.031 and 0.002 (As), 0.250 and 0.031 (Pb), 0.034 and 0.002 (Zn), and 0.534 and 0.023 (Cd), respectively, for each community. Generally, levels of Hg, As, Pb, Zn, and Cd in water from Nangodi exceeded the World Health Organisation (WHO) stipulated limits of 0.010 for Hg, As, and Pb, 3.0 for Zn and 0.003 for Cd for drinking water, and levels of Hg, Pb, and Cd recorded in Tinga, exceeded the stipulated WHO limits. Ingestion of water, containing elevated levels of Hg, As, and Cd by residents in these mining communities may pose significant health risks. Continuous monitoring of the quality of drinking water sources in these two communities is recommended.
机译：该研究评估了加纳北部两个小型采矿社区（Nangodi和Tinga）饮用水源中的重金属含量。从两个采矿社区的钻孔，手挖井，挖出物和溪流中收集了七十二（72）个水样。使用原子吸收分光光度计（AAS）测定汞（Hg），砷（As），铅（Pb），锌（Zn）和镉（Cd）的水平。 Nangodi和Tinga社区水样品中的重金属平均水平（mg / l）为0.038和0.064（Hg），0.031和0.002（As），0.250和0.031（Pb），0.034和0.002（Zn），0.534和每个社区分别为0.023（Cd）。通常，Nangodi的水中Hg，As，Pb，Zn和Cd的含量超过了世界卫生组织（WHO）规定的限值，Hg，As和Pb的限值为0.010，Zn的限值为3.0，饮用水的Cd的限值为0.003，以及廷加记录的Hg，Pb和Cd含量超过了WHO规定的限值。这些采矿社区的居民摄入含有高水平的Hg，As和Cd的水可能构成重大的健康风险。建议对这两个社区的饮用水源水质进行持续监测。

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