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首页> 外文期刊>Marine pollution bulletin >Evaluation of heavy metal pollutants in salt and seawater under the influence of the Lyari River and potential health risk assessment
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Evaluation of heavy metal pollutants in salt and seawater under the influence of the Lyari River and potential health risk assessment

机译：莱拉里河对盐水和海水中重金属污染物的评价及潜在的健康风险评估

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摘要

Heavy metals intoxication through edible salt poses serious health hazards. The conducted research assessed the levels of heavy metals, health risks of salt samples, and the pollution index of seawater obtained from saltpans located at Sandpit, Karachi, Pakistan, which receive untreated effluents through the Lyari River. Seawater (n = 27) and salt samples (n = 27) were prepared for the detection of Al, Cd, Pb, Cr, Fe, Cu, Hg, Ni, As and Zn through atomic absorption spectroscopy, mean concentrations ? S.D. (mg/mL) were compared with the National Environmental Quality Standards, Pakistan. The levels of Cr (40.06 ? 0.21) were the highest followed by Fe (39.77 ? 0.08) As (25.12 ? 0.21) Ni Pb Al Hg Zn Cd Cu. In sea salt (Mean ? S?D mg/Kg), the Cr (47.79 ? 0.19), Fe (47.5 ? 0.15), As (30.62 ? 0.22), and Ni were redundant elements followed by Al Pb Hg Zn Cu Cd. The water comprehensive pollution index was 1000 times greater than the critical values. The single factor pollution index was highest for Hg (1321), followed by Cr (40), Ni (36), Pb (32), Al (31.4), Cd (31.3), and As (25). Health risk assessment indices (from salt samples), including target hazard quotient (THQ) for As, Pb, Al, Hg, and Cr were two to six times higher than the noncarcinogenic THQ reference range. Similarly, the hazardous index indicated that salt was 20 times hazardous (HI = 20.29), and the carcinogenic rate index for the heavy metals i.e., Cd, As, Cr, and Ni was above the reference CR value i.e., 1 ? 10-4. In conclusion, the experimental and theoretical approaches recommend that the use of contaminated salt may impart health hazards.
机译：通过可食用盐的重金属​​中毒造成严重的健康危害。进行的研究评估了重金属，盐样品的水平，盐样的健康风险，以及位于巴基斯坦的Sandpit的Sandpans的海水污染指数，通过莱拉里河接受未处理的流出物。通过原子吸收光谱法检测Al，Cd，Pb，Cr，Fe，Cu，Hg，Ni，As和Zn，制备盐样（n = 27）和盐样品（n = 27），通过原子吸收光谱，平均浓度？ S.D. （Mg / ml）与巴基斯坦国家环境质量标准进行比较。 Cr（40.06？0.21）的水平最高，其次是Fe（39.77？0.08）＆ AS（25.12？0.21）＆ ni＆ Pb＆ al＆ Hg＆ Zn＆ CD＆铜。在海盐（平均值？S？D mg / kg）中，Cr（47.79？0.19），Fe（47.5？0.15），如（30.62〜0.22），Ni是冗余元件，然后是Al＆ Pb＆ Hg＆ Zn＆ CU＆GT;光盘。水综合污染指数比临界价值大1000倍。对于Hg（1321），单因素污染指数最高，其次是Cr（40），Ni（36），Pb（32），Al（31.4），CD（31.3），以及（25）。健康风险评估指数（来自盐样品），包括靶危险商（THQ），含量为Pb，Al，Hg和Cr，高于非通用THQ参考范围的两到六倍。类似地，危险指数表明，盐是危险的20倍（Hi = 20.29），以及重金属的致癌率指数，即Cd，As，Cr和Ni高于参考Cr值I.，1？ 10-4。总之，实验和理论方法建议使用受污染的盐可以赋予健康危害。

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