Tokatlı Cem, Varol Memet, Ustaoğlu Fikret
İpsala Laboratory Technology Department, Trakya University, Edirne, Turkey.
Department of Aquaculture, Doğanşehir V.K. Vocational School, Malatya Turgut Özal University, Malatya, Turkey.
Environ Sci Pollut Res Int. 2023 Apr;30(18):52818-52829. doi: 10.1007/s11356-023-26078-2. Epub 2023 Feb 27.
In this study, dissolved metal levels of 10 different ponds used as irrigation and drinking water sources in the north of Saros Bay (Türkiye) were evaluated using multivariate statistical methods, contamination and ecological risk indices, and absolute principal component score-multiple linear regression (APCS-MLR). The mean levels of metals in the ponds ranged from 0.045 µg/L (Cd) to 127 µg/L (Mn). Pond 7 used for drinking water source had the lowest total metal level. Only Mn levels in two ponds (P1 and P2) slightly exceeded the critical value set by EU Drinking Water Directive. However, the levels of all metals in all ponds were lower than the critical values set for irrigation water and aquatic life. According to the heavy metal pollution index (HPI), five ponds showed low metal pollution in terms of drinking water quality, four ponds showed moderate metal pollution, and one pond (P1) showed moderate to heavy pollution. According to the Nemerow pollution index (NPI) values (0.26-1.82), ponds P1 and P2 showed slight metal pollution, while other ponds showed insignificant metal pollution. Contamination degree (CD) values of ponds varied between 0.95 and 3.33, indicating that all ponds showed low pollution. In terms of irrigation water quality, all ponds showed low or insignificant metal pollution according to the HPI, NPI, and CD values. According to the ecological risk index (ERI) values, metals in all ponds posed low ecological risks for both drinking and irrigation purposes. Factor analysis identified two potential sources: mixed sources and natural sources. The APCS-MLR model results revealed that mixed sources and natural sources contributed 78.99% and 21.01% to dissolved metals in the ponds, respectively. Health risk assessment results indicated that both individual and combined metals in the ponds would not cause non-carcinogenic risks to both adults and children. Similarly, it was found that Cr and As would not cause carcinogenic risks to the residents of the region.
在本研究中，运用多元统计方法、污染与生态风险指数以及绝对主成分得分-多元线性回归（APCS-MLR），对土耳其萨罗斯湾北部用作灌溉和饮用水源的10个不同池塘中的溶解金属含量进行了评估。池塘中金属的平均含量范围为0.045µg/L（镉）至127µg/L（锰）。用作饮用水源的7号池塘的总金属含量最低。只有两个池塘（P1和P2）中的锰含量略超过欧盟饮用水指令设定的临界值。然而，所有池塘中所有金属的含量均低于灌溉用水和水生生物设定的临界值。根据重金属污染指数（HPI），就饮用水质量而言，五个池塘显示出低金属污染，四个池塘显示出中度金属污染，一个池塘（P1）显示出中度至重度污染。根据内梅罗污染指数（NPI）值（0.26 - 1.82），P1和P2池塘显示出轻微金属污染，而其他池塘显示出微不足道的金属污染。池塘的污染程度（CD）值在0.95至3.33之间变化，表明所有池塘均显示出低污染。就灌溉用水质量而言，根据HPI、NPI和CD值，所有池塘均显示出低或微不足道的金属污染。根据生态风险指数（ERI）值，所有池塘中的金属对饮用水和灌溉用途均构成低生态风险。因子分析确定了两个潜在来源：混合源和自然源。APCS-MLR模型结果显示，混合源和自然源分别对池塘中溶解金属的贡献率为78.99%和21.01%。健康风险评估结果表明，池塘中的单一金属和混合金属均不会对成人和儿童造成非致癌风险。同样，发现铬和砷不会对该地区居民造成致癌风险。
