期刊
ENVIRONMENTAL MONITORING AND ASSESSMENT
卷 192, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1007/s10661-020-8128-2
关键词
Nitrate; Groundwater; Rural area; Risk assessment; Southwest Bangladesh
资金
- Khulna University Research Cell
Consumption of drinking water with high nitrate may pose a serious health hazard. This study examined nitrate concentration in the water of dug wells at the Jashore district of Bangladesh. A total of 58 water samples were collected from dug wells which are currently in use for drinking water. Concentrations of nitrate in the water range from 0.05 to 430 mg/l and from 0.24 to 206 mg/l respectively in the wet and dry seasons. About 17% and 14% of the samples during the wet and dry seasons respectively showed nitrate concentration above the WHO guideline value of 50 mg/l. The wells with high nitrate concentration showed health risks for adults and children. About 17% of the samples showed a health hazard index (HQ(nitrate)) values above the acceptable limit (HQ(nitrate) values > 1) for adults, in both the wet and dry seasons, whereas 26% and 33% of the water samples in the wet and dry seasons respectively showed HQ(nitrate) values > 1 for children. Therefore, children are more likely to be affected by intaking nitrate-contaminated dug well water. Health risks of elevated nitrate concentration in the dug wells require proper attention to ensure reliable water supply.
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