Quality of Sachet Water Produced at Tarkwa, Ghana

S. Ndur, J. Kuma, W. Buah, J. Galley
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引用次数: 9

Abstract

Cholera outbreak in some cities and towns in Ghana in early 2011 necessitated a sachet water quality study in Tarkwa to determine their wholesomeness. The study was conducted in four phases in August 2011, December 2011, August 2012 and December, 2013. Most of the physico-chemical parameters analysed were within the recommended WHO limits except for pH, Pb and Ni in the main. About 50% of the samples had their pH below the lower limit of 6.5 and 8% had Pb concentrations above the recommended limit of 0.01 mg/L. Protozoan organisms such as Cyclospora cayetanensis (5%), Cryptosporidium parvum (4%), Ascaris lumbricoides eggs (10%), and Stronglyoides Stercoralis larvae (4%) were identified in some of the water samples. Helminth eggs (6.7%), Protista (13.4%) and 6.7% unidentified insect larvae were also found in the samples. Faecal and total coliforms were found in 40% of the samples analysed. The presence of protozoan organisms and faecal coliforms in some of the sachet water render them unsafe for drinking.
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加纳Tarkwa生产的小袋水的质量
2011年初,加纳一些城镇爆发霍乱,因此有必要在塔克瓦进行小袋水质量研究,以确定其健康状况。研究分2011年8月、2011年12月、2012年8月和2013年12月四个阶段进行。除pH、Pb、Ni等主要指标外,大部分理化指标均在WHO推荐限值范围内。约50%的样品pH值低于6.5的下限,8%的样品铅浓度高于0.01 mg/L的建议限值。部分水样中检出卡耶坦环孢子虫(5%)、细小隐孢子虫(4%)、类蚓蛔虫卵(10%)和类粪强线虫幼虫(4%)等原生动物。虫卵(6.7%)、原生虫(13.4%)和不明昆虫幼虫6.7%。在40%的分析样本中发现了粪便和总大肠菌。有些小袋水中存在原生动物和粪便大肠菌群,因此不适于饮用。
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