Ground water quality in the Kathmandu valley of Nepal
Ground water quality in the Kathmandu valley of Nepal
复制标题
尼泊尔加德满都谷地地下水质量
DOI：
10.1007/s10661-010-1706-y
复制
发表时间：
2011
影响因子：
3
通讯作者：
B. R. Pant
中科院分区：
文献类型：
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作者：
B. R. Pant
进行了一项研究来评估尼泊尔加德满都谷地的地下水质量。地下水样品随机采集于加德满都谷地加德满都、拉利特普尔和巴克塔普尔地区不同地点的浅井、管井和深管井。对样品的物理、化学和微生物参数进行评估，以评估饮用水的地下水质量。研究发现，由于存在铁和大肠菌，山谷中的地下水很容易饮用。据估计，铁含量远高于世界卫生组织 (WHO) 饮用水质量指南的可接受限值 (1.9 毫克/升)。地下水中大肠菌群总数明显超过饮用水质量标准，并在浅井中观察到最大大肠菌群（267 CFU/100 mL）。电导率和浊度分别为 875 μS/cm 和 55 NTU，高于世界卫生组织关于饮用水指南的建议。然而，测量的pH值在可接受的限度内。砷、氯化物、氟化物和硬度浓度被发现符合世界卫生组织饮用水质量指南的建议。
A study was undertaken to assess the quality of groundwaters in the Kathmandu Valley, Nepal. The groundwater samples were randomly collected from shallow well, tube well, and deep-tube wells located at different places of Kathmandu, Lalitpur, and Bhaktapur districts in the Kathmandu valley. Physical, chemical, and microbiological parameters of the samples were evaluated to estimate the groundwater quality for drinking water. It was found that the groundwater in the valley is vulnerable to drink due to presence of iron and coliform bacteria. Iron was estimated to be much higher then the acceptable limit of World Health Organization (WHO) drinking-water quality guidelines (1.9 mg/L). Total coliform bacteria enumerated in groundwaters significantly exceeded the drinking-water quality standard and observed maximum coliform (267 CFU/100 mL) in shallow wells. The electrical conductivity and turbidity were found to be 875 μS/cm and 55 NTU, respectively, which are above the WHO recommendations for drinking water guidelines. However, pH value was measured within the acceptable limit. Arsenic, chloride, fluoride, and hardness concentrations were found to be in agreement with the recommendations of WHO drinking-water quality guidelines.