Department of Environmental Science, Graduate School of the Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Graduate Faculty of Environment, University of Tehran, P.O. Box 14155-6135 Tehran, Iran.
J Environ Health Sci Eng. 2015 Oct 30;13:75. doi: 10.1186/s40201-015-0231-x. eCollection 2015.
Being established in 1988 in the vicinity of Isfahan city, Mubarakeh Steel complex has imposed adverse environmental and health effects within the area. The study area is covered by lots of farms through which major crops like wheat and rice are provided.
Considering the imposed pollution load of the complex, the current study has monitored the concentration of metals Fe, Al, Cd, Cr, Ni, Pb, Cu, Zn, Mn, Co, Mo, As in 14 soil samples within the study area. Furthermore, human health hazards of mentioned metals due to consumption of domestic rice and wheat have also been evaluated through different scenarios. In order to evaluate the mobility of metals in soil samples the sequential chemical analysis is performed.
Regarding the accumulation of metals in loose phases the order of metals bioavailability risk level is estimated to be as follows: Co > Cd > Mo > Ba > As > Pb > Mn > Cu > V > Zn > Cr > Ni.
An index approach is also considered to evaluate the severity of metal contamination. Regarding geochemical accumulation index, only cadmium is detected to be in a moderately contaminated status while other metals declare an unpolluted condition. Index of pollution pays more attention to mobility potential of metals and accordingly detects metals Co, Mn, As, Pb, Cd, Ba and Mo to be in a moderately contaminated level. On the other hand, enrichment factor declares all toxic metals except for Co, Ba and V to be enriched.
Considering human health hazard assessment, except for Fe, Ba, Cu and Zn, all metals intakes in different scenarios are considered as hazardous while their CDI values are much more than the respective oral reference doses.
穆巴拉克钢铁公司于 1988 年在伊斯法罕市附近成立，对该地区造成了不良的环境和健康影响。研究区域内有许多农场，主要种植小麦和水稻等作物。
考虑到该综合体造成的污染负荷，本研究监测了研究区域内 14 个土壤样本中 Fe、Al、Cd、Cr、Ni、Pb、Cu、Zn、Mn、Co、Mo、As 等金属的浓度。此外，还通过不同情景评估了由于食用国产大米和小麦而导致这些金属对人体健康的危害。为了评估土壤样品中金属的迁移性，进行了顺序化学分析。
关于金属在松散相中的积累，金属生物利用风险水平的顺序估计如下：Co>Cd>Mo>Ba>As>Pb>Mn>Cu>V>Zn>Cr>Ni。
还考虑采用指数方法来评估金属污染的严重程度。就地球化学积累指数而言，只有镉被检测到处于中度污染状态，而其他金属则显示无污染状态。污染指数更关注金属的迁移潜力，因此检测到 Co、Mn、As、Pb、Cd、Ba 和 Mo 处于中度污染水平。另一方面，富集因子宣布除 Co、Ba 和 V 之外的所有有毒金属都富集。
就人类健康危害评估而言，除 Fe、Ba、Cu 和 Zn 外，所有金属在不同情景下的摄入量都被认为是有害的，而它们的 CDI 值远高于各自的口服参考剂量。
