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Identification of spatial patterns, geochemical associations and assessment of origin-specific health risk of potentially toxic elements in soils of Armavir region, Armenia
Chemosphere ( IF 8.8 ) Pub Date : 2020-09-19 , DOI: 10.1016/j.chemosphere.2020.128365
Gevorg Tepanosyan , Lilit Sahakyan , Nairuhi Maghakyan , Armen Saghatelyan

The study of soil potentially toxic elements (PTE) contents and establishment of the geochemical characterization of areas which have never been studied is of great concern. In 2019, soil survey of the Armavir region (Armenia) was conducted in order to investigate the spatial pattern of PTE, reveal PTE geochemical associations and assess the origin-specific health risks. The application of compositional data analysis and geospatial mapping allowed to identify two clusters of samples. The first cluster was spatially located on volcanic rocks and was represented by Fe, Co, Mn, Ti, Zn, Ba, Pb suggesting a natural origin of PTE in these areas. The second cluster was allocated on the alluvial, deluvial, and proluvial sediments and represented by As, Cu, Cr, Ni. Such combination of elements in the same group indicates the anthropogenic introduction of some quantities of PTE. The latter is confirmed by the presence of outliers and extreme values for As, Cu and Ni, as well as by the spatial colocation of Fe, Mn, Co, Pb, Zn outliers and extreme contents. The health risk assessment showed that for children the multi-elemental non-carcinogenic risk was detected, while for the adults the non-carcinogenic risk and carcinogenic risk were below the allowable level. The detailed study of the risk levels showed that in first cluster comparatively higher risk were observed for Pb, V, Ba, Zn while in the second cluster: Fe, Co, Mn, As, Cr, Cu, Ni. The results indicated the necessity of additional in-depth studies with special focus on bioavailability of PTE.



中文翻译:

识别空间格局,地球化学联系并评估亚美尼亚Armavir地区土壤中潜在有毒元素的特定来源的健康风险

对土壤潜在有毒元素(PTE)含量的研究以及从未研究过的区域的地球化学特征的建立是非常令人关注的。2019年,对Armavir地区(亚美尼亚)进行了土壤调查,以调查PTE的空间格局,揭示PTE地球化学联系并评估特定来源的健康风险。成分数据分析和地理空间映射的应用允许识别两个样本集群。第一个簇在空间上位于火山岩上,以铁,钴,锰,钛,锌,钡,铅为代表,表明这些地区天然存在PTE。第二个簇被分配在冲积,冲积和冲积沉积物上,并以As,Cu,Cr,Ni表示。同一组中元素的这种组合表明人为引入了一定数量的PTE。后者通过As,Cu和Ni的异常值和极端值的存在以及Fe,Mn,Co,Pb,Zn异常值和极端含量的空间搭配来确认。健康风险评估表明,对于儿童,发现了多元素非致癌风险,而对于成年人,其非致癌风险和致癌风险均低于允许水平。对风险水平的详细研究表明,在第一类中,铅,钒,钡,锌的风险较高,而在第二类中,铁,钴,锰,砷,铬,铜,镍的风险较高。结果表明有必要进行额外的深入研究,特别是PTE的生物利用度。后者可以通过存在离群值和砷,铜和镍的极值以及铁,锰,钴,铅,锌的离群值和极端含量的空间搭配来确认。健康风险评估表明,对于儿童,发现了多元素非致癌风险,而对于成年人,其非致癌风险和致癌风险均低于允许水平。对风险水平的详细研究表明,在第一类中,铅,钒,钡,锌的风险较高,而在第二类中,铁,钴,锰,砷,铬,铜,镍的风险较高。结果表明有必要进行额外的深入研究,特别是PTE的生物利用度。后者通过As,Cu和Ni的异常值和极端值的存在以及Fe,Mn,Co,Pb,Zn异常值和极端含量的空间搭配来确认。健康风险评估表明,对于儿童,发现了多元素非致癌风险,而对于成年人,其非致癌风险和致癌风险均低于允许水平。对风险水平的详细研究表明,在第一类中,铅,钒,钡,锌的风险较高,而在第二类中,铁,钴,锰,砷,铬,铜,镍的风险较高。结果表明有必要进行额外的深入研究,特别是PTE的生物利用度。健康风险评估表明,对于儿童,发现了多元素非致癌风险,而对于成年人,其非致癌风险和致癌风险均低于允许水平。对风险水平的详细研究表明,在第一类中,铅,钒,钡,锌的风险较高,而在第二类中,铁,钴,锰,砷,铬,铜,镍的风险较高。结果表明有必要进行额外的深入研究,特别是PTE的生物利用度。健康风险评估表明,对于儿童,发现了多元素非致癌风险,而对于成年人,其非致癌风险和致癌风险均低于允许水平。对风险水平的详细研究表明,在第一类中,铅,钒,钡,锌的风险较高,而在第二类中,铁,钴,锰,砷,铬,铜,镍的风险较高。结果表明有必要进行额外的深入研究,特别是PTE的生物利用度。

更新日期:2020-09-20
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