Geological Survey of Bangladesh (GSB), Segunbaghicha, Dhaka, 1000, Bangladesh.
Institute of National Analytical Research and Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dhaka, 1205, Bangladesh.
Environ Sci Pollut Res Int. 2023 Aug;30(37):88132-88154. doi: 10.1007/s11356-023-28108-5. Epub 2023 Jul 12.
The coastal areas of Bangladesh have poor accessibility to fresh drinking water and the groundwater is not suitable for drinking, cooking, and other domestic uses due to high levels of salinity and potentially toxic elements. The current study focuses on understanding of the distribution of some physicochemical parameters (temperature, pH, EC, TDS, and salinity) and chemical elements (Fe, Mn, Zn, Ca, Mg, Na, K, Cu, Co, Pb, As, Cr, Cd, and Ni) with health perspective in drinking water from the southwestern coastal area of Bangladesh. The physicochemical properties of the water samples were examined with a multiparameter meter, while the elemental concentrations were analyzed using atomic absorption spectrometer. Water quality index (WQI) and irrigation indices were utilized to determine the drinking water quality and irrigation feasibility, respectively, whereas hazard quotients (HQs) and hazard index (HI) were used to assess the probable pathways and the associated potential risks to human health. The concentrations of some toxic elements in measured samples were relatively higher compared to drinking water guidelines, indicating that ground and surface water are not apt for drinking and/or domestic uses. The multivariate statistical approaches linked the source of the pollutants in the studied water body mostly to the geogenic origin including saline water intrusion. WQI values ranged from 18 to 430, reflecting excellent to unsuitable categories of water quality. The assessment of human health risks due to exposure to contaminated water demonstrated both carcinogenic and non-carcinogenic health risks in the exposed residents of the study area. Therefore, appropriate long-term coastal area management strategies should be adopted in the study region for environmental sustainability. The findings of this research will be supportive in understanding the actual situation of fresh drinking water in the area for policymakers, planners, and environmentalists to take effective necessary measures to ensure safe drinking water in the study area.
孟加拉国沿海地区淡水供应不足，地下水因盐分和潜在有毒元素含量过高而不适宜饮用、烹饪和其他家庭用途。本研究主要关注了解孟加拉国西南部沿海地区饮用水中一些物理化学参数（温度、pH 值、EC、TDS 和盐度）和化学元素（铁、锰、锌、钙、镁、钠、钾、铜、钴、铅、砷、铬、镉和镍）的分布情况及其与健康的关系。使用多参数计检测水样的物理化学性质，原子吸收光谱仪分析元素浓度。利用水质指数（WQI）和灌溉指数分别确定饮用水质量和灌溉可行性，利用危害商数（HQs）和危害指数（HI）评估可能的途径和对人体健康的潜在风险。与饮用水指南相比，测量样本中一些有毒元素的浓度相对较高，表明地下水和地表水不适宜饮用和/或家庭使用。多元统计方法将研究水体中污染物的来源主要与包括盐水入侵在内的地球成因联系起来。WQI 值范围从 18 到 430，反映了水质的优秀到不适宜类别。由于接触受污染的水而导致的人类健康风险评估表明，研究地区的暴露居民存在致癌和非致癌健康风险。因此，应在研究区域采取适当的长期沿海地区管理策略，以实现环境可持续性。本研究的结果将有助于了解该地区新鲜饮用水的实际情况，为决策者、规划者和环保主义者提供支持，以便在研究区域采取有效必要措施确保安全饮用水。
