The Center for Ecological-Noosphere Studies, National Academy of Sciences, Abovian-68, Yerevan 0025, Armenia.
Sci Total Environ. 2018 Oct 15;639:900-909. doi: 10.1016/j.scitotenv.2018.05.211. Epub 2018 May 26.
Soils samples collected during different geochemical surveys of the city of Kajaran located near the biggest Cu-Mo mining area in Armenia were subjected to the multivariate geostatistical analysis and geochemical mapping in order to reveal soil heavy metals spatial distribution pattern and assess human health risk level under continuous impact of mining activities. In addition, human health risk assessment was done for the contents of Pb, Cu, Zn, Co, Mo, Mn, Ti, and Fe. The results of Principal Component Analysis and Cluster Analysis verify each other and were also complemented by the spatial distribution features of studied heavy metals indicating that two groups of elements have been generated. The first anthropogenically predominated group includes the main industrial elements Mo and Cu, and their accessories Pb and Zn while Ti, Mn, Fe and Co with the naturally predominant contents were observed in the second group. Moreover, the study reveals that the superposition of geogenic and anthropogenic components lead to the alteration of the shapes of areas with the high natural contents of heavy metals and formation of polluted areas with the intensive anomalies of elements. Health risk assessment showed that Mo was the only studied element which poses a non-carcinogenic risk to adult and children's health in some sampling sites during the whole period of investigations. Moreover, in all studied locations multi-elemental non-carcinogenic risk to children health from all studied heavy metals were detected. Special attention was given to the soils of kindergarten territories, and the results indicated that Hazard Index in kindergartens was >1 indicating an adverse health effect to children. The results obtained can serve as a basis for the development and implementation of risks reduction measures and systematic monitoring program planning.
对位于亚美尼亚最大铜钼矿区附近的卡詹市进行的不同地球化学调查过程中采集的土壤样本进行了多元地质统计分析和地球化学制图，以揭示土壤重金属的空间分布模式，并评估在采矿活动的持续影响下人类健康的风险水平。此外，还对 Pb、Cu、Zn、Co、Mo、Mn、Ti 和 Fe 的含量进行了人类健康风险评估。主成分分析和聚类分析的结果相互验证，并辅以研究中重金属的空间分布特征，表明已生成两组元素。第一组人为为主的元素包括主要的工业元素 Mo 和 Cu，以及它们的伴生元素 Pb 和 Zn，而 Ti、Mn、Fe 和 Co 的含量较高，属于自然为主的元素。此外，研究表明，地球成因和人为成分的叠加导致了高自然含量重金属区域形状的改变，并形成了元素密集异常的污染区域。健康风险评估表明，在整个调查期间，Mo 是唯一一种在一些采样点对成人和儿童健康构成非致癌风险的研究元素。此外，在所有研究地点，从所有研究的重金属中都检测到对儿童健康的多元素非致癌风险。特别关注了幼儿园区域的土壤，结果表明，幼儿园的危害指数（Hazard Index）>1，表明对儿童健康有不利影响。所得结果可作为制定和实施降低风险措施和系统监测计划规划的基础。
