| 太湖县花凉亭水库流域地下水水化学特征及水质评价 |
| 摘要点击 1222 全文点击 171 投稿时间：2024-02-27 修订日期：2024-04-28 |
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| 中文关键词 水化学特征 水岩作用 熵权质量指数 健康风险 花凉亭水库 |
| 英文关键词 hydrogeochemical characteristics water-rock interaction entropy-weighted water quality index health risk assessment Hualiangting Reservoir |
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| 中文摘要 |
| 以太湖县花凉亭水库流域为研究对象,采集了42组井水样品和20组泉水样品测定了主要水化学指标,综合运用数理统计、Piper图、Gibbs图、离子比值和因子分析等方法研究了研究区井水和泉水的特征及控制因素,基于熵权质量指数（EWQI）评价了井水和泉水的水质,根据健康风险评价模型（HHRA）对井水和泉水的NO3-的潜在风险进行了评估. 结果表明,研究区井水和泉水整体呈弱碱性,优势阳离子和阴离子分别为Na2+、Ca2+和HCO3-,水化学类型主要为HCO3-Na·Ca型；井水和泉水形成主要受岩石风化作用和阳离子交替吸附作用控制,井水和泉水中Ca2+、Mg2+和HCO3-的主要来源为碳酸岩盐溶解,农业活动、生活污水排放等导致Na+、Cl-和NO3-的富集；研究区井水和泉水水质整体较好,为良好至优良等级,健康风险评价表现为男人、女人和儿童均具有较低的非致癌风险,但儿童的健康风险明显高于成人. 研究成果可为花凉亭水库流域地下水资源可持续开发利用和保护提供参考. |
| 英文摘要 |
| This study focused on the Hualiangting Reservoir Basin in Taihu County, where 42 well water samples and 20 spring water samples were collected to measure the primary hydrochemical indicators. Using a comprehensive suite of methods including mathematical statistics, Piper diagrams, Gibbs diagrams, ion ratios, and factor analysis, the study examined the characteristics and influencing factors of well and spring water within the area. Water quality was assessed based on the entropy-weighted quality index （EWQI）, and the potential risks associated with nitrate （NO3-） levels in the groundwater were evaluated using the health risk assessment model （HHRA）. The results indicated that the groundwater was generally weakly alkaline, with sodium （Na+）, calcium （Ca2+）, and bicarbonate （HCO3-） being the predominant ions. The hydrochemical type was mainly characterized as the bicarbonate-sodium-calcium type. The formation of wells and spring water was primarily influenced by rock weathering and cation exchange adsorption. The main sources of Ca2+, magnesium （Mg2+）, and HCO3- in the groundwater were carbonate dissolution, while agricultural activities and domestic sewage discharge led to increased concentrations of Na+, chloride （Cl-）, and NO3-. Overall, the water quality in the area was good, ranging from fair to excellent. The health risk assessment demonstrated a low non-carcinogenic risk for men, women, and children, with children facing a significantly higher risk compared to that of adults. The findings of this study provide valuable guidance for the sustainable development, utilization, and protection of groundwater resources in the Hualiangting Reservoir Basin. |
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