埃塞俄比亚中部裂谷土壤、蔬菜和水中重金属浓度及健康风险评价

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According to the statistics, Pearson cross-correlation analysis results for the element pairs of CoNi (0.879), Cr-Cu (0.582), Fe-Cr (0.597), Fe-Cu (0.581), Fe-Pb (0.587) and Fe-Cu (0.694) were showed the highest and positive. Metals with the highest positive correlations indicated that the same behavior in the environment, increasing or decreasing together in the environment. The correlations obtained between Cr-Mn, Cr-Zn, Cu-Mn, Cu-Zn, Mn-PB, and Ni-Zn was the moderately highest among the others. The moderately high correlations between these metals indicated that the pollutants possibly shared the same source, whereas the others may have arisen from individual sources in the region. Moreover, the soil concentrations of Fe, Mn, Zn, and Cr were also high and higher compared with the level of different countries' standards. The average daily intake for Pb(7.79), Fe(2755.38), Zn(55.83) and Cu(639.05) mg/person/day were above the permissible maximum tolerable daily intake of 0.21, 15, 15, 2.0mg/person/day endorsed by WHO/FAO. Hazard quotient of Pb, Fe, Zn, Zn, Mn and Cu as well as the hazard indices of selected vegetables were exceeded unity, signifying presence of health risks from consumption of the vegetables. Conclusion Based on the results of this study, heavy metals had a significant health risk (both non-carcinogenic and carcinogenic) effects to the consumer associated with the consumption of these vegetables grown within the study area. 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The correlations obtained between Cr-Mn, Cr-Zn, Cu-Mn, Cu-Zn, Mn-PB, and Ni-Zn was the moderately highest among the others. The moderately high correlations between these metals indicated that the pollutants possibly shared the same source, whereas the others may have arisen from individual sources in the region. Moreover, the soil concentrations of Fe, Mn, Zn, and Cr were also high and higher compared with the level of different countries' standards. The average daily intake for Pb(7.79), Fe(2755.38), Zn(55.83) and Cu(639.05) mg/person/day were above the permissible maximum tolerable daily intake of 0.21, 15, 15, 2.0mg/person/day endorsed by WHO/FAO. Hazard quotient of Pb, Fe, Zn, Zn, Mn and Cu as well as the hazard indices of selected vegetables were exceeded unity, signifying presence of health risks from consumption of the vegetables. 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引用次数: 0

摘要

一些重金属对包括人类在内的生物有毒,因此需要控制它们从受污染的农田进入食物链。本研究的目的是调查工业化对埃塞俄比亚中部裂谷地区农产品质量和环境的影响。随机收集土壤、水和蔬菜样品,利用微波等离子体原子发射光谱(MPAES)对重金属进行处理和分析。此外,它还调查了食用这些蔬菜的潜在健康风险。结果土壤、水和蔬菜中金属的平均浓度梯度(ppm)为Ni本文章由计算机程序翻译,如有差异,请以英文原文为准。
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Heavy Metal Concentration And Health Risk Assessment In Soil, Vegetables, And Water Of Central Rift Valley, Ethiopia
Background Several heavy metals are toxic to organisms including human and therefore their entry into food chain from polluted agricultural land is required to be controlled. The objective of this study was to investigate the impact of industrialization on the quality of agricultural products and environments in the area of the central rift valley, Ethiopia. The samples of soils, water, and vegetables were randomly collected, processed, and analyzed for heavy metals using microwave plasma atomic emission spectroscopy (MPAES). Also, it examines potential health risks from the consumption of these vegetables. Results The result shown the average concentration gradient of metals in the soil, water, and vegetables (ppm) was Ni
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