加纳矿业社区 Tarkwa 地下水重金属污染的水文地球化学和人类健康风险评估

Q2 Environmental Science
Harry Amonoo Gwira , Richard Osae , Christopher Abasiya , Michael Yaw Peasah , Felix Owusu , Seyram Kofi Loh , Ayittey Kojo , Philip Aidoo , Ebenezer Aboagye Agyare
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引用次数: 0

摘要

本研究调查了加纳采矿社区 Tarkwa 地下水质量的地球化学特征和污染情况。对 74 个地下水样本中的溶解固体总量、电导率、钙、镁、钠、钾、溶解固体总量、总硬度、重金属和氰化物 (CN) 进行了评估。其他评估参数包括 pH 值、电导率、碳酸盐、碳酸氢盐、氯化物、硫酸盐、硝酸盐和 pH 值。采用美国环保局建议的方法,进行了健康风险评估。超出世卫组织建议阈值的参数包括 pH 值(4.9-7.7)、电导率(150-1082 µS/Cm)、浊度(1.4-139.5 NTU)、镁(1.9-395.5 mg/L)、硝酸盐(4.5 mg/L-760 mg/L)、磷酸盐(2.3-80 mg/L)、硫酸盐(10-855.6 mg/L)、氯化萘(1.6-16 mg/L)、砷(0.001-0.015 mg/L)、汞(0.001-0.005 mg/L)、镉(ND-0.009 mg/L)、锰(0.004-1.38 mg/L)、镍(0.002-0.118 mg/L)。研究还表明,塔尔卡瓦的地下水天然坚硬,因此钙和镁离子是决定水化学性质的主要离子。与此类似,影响水化学的最主要因素是岩石优势和降水优势。由于氯化萘、砷和镉的含量较高,健康风险评估显示,长期摄入塔克瓦的地下水会带来致癌和非致癌的健康风险。与成年人相比,儿童更容易受到致癌和非致癌健康风险的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hydrogeochemistry and human health risk assessment of heavy metal pollution of groundwater in Tarkwa, a mining community in Ghana

The current study investigated the geochemical characterization and contamination of groundwater quality in Tarkwa, a mining community in Ghana. Total dissolved solids, electrical conductivity, calcium, magnesium, sodium, potassium, total dissolved solids, total hardness, heavy metals, and cyanide (CN) were all assessed in 74 groundwater samples. Other parameters assessed included pH, electrical conductivity, carbonate, bicarbonate, chloride, sulphate, nitrate, and pH. Using the method recommended by the USEPA, a health risk assessment was carried out. Among the parameters which exceeded their WHO recommended threshold were pH (4.9–7.7), Conductivity (150–1082 µS/Cm), Turbidity (1.4–139.5 NTU), Magnesium (1.9–395.5 mg/L), Nitrate (4.5 mg/L–760 mg/L), phosphate (2.3–80 mg/L), Sulphate (10–855.6 mg/L), CN (1.6–16 mg/L), As (0.001–0.015 mg/L), Hg (0.001–0.005 mg/L), Cd (ND-0.009 mg/L), Mn (0.004–1.38 mg/L), Ni (0.002–0.118 mg/L). The study also showed that the groundwater in Tarkwa is naturally hard, making Ca and Mg ions the main ions determining the chemistry of the water. Similar to this, the most significant factors affecting water chemistry were rock dominance and precipitation dominance. Due to high levels of CN, As, and Cd, health risk evaluation revealed that prolonged intake of groundwater from Tarkwa is linked to both carcinogenic and noncarcinogenic health risk. Children were shown to be more vulnerable to both carcinogenic and noncarcinogenic health risks than adults.

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来源期刊
Environmental Advances
Environmental Advances Environmental Science-Environmental Science (miscellaneous)
CiteScore
7.30
自引率
0.00%
发文量
165
审稿时长
12 weeks
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