Assessement of the heavy metal contamination of soils in Kondopoga and Kostomuksha (Republic of Karelia)

Q4 Agricultural and Biological Sciences Biulleten'' Pochvennogo instituta im VV Dokuchaeva Pub Date : 2022-09-25 DOI:10.19047/0136-1694-2022-111-157-184
S. G. Novikov
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Abstract

Surveys were carried out in Kondopoga and Kostomuksha, where the main industries are pulp-and-paper making and iron ore mining and concentration, respectively. Samples were taken from the top 0–10 cm soil layer in sites belonging to different land use categories and the content of heavy metals (Pb, Cu, Zn, Ni, Co, Cr, Mn) in the samples was determined by atomic absorption spectrophotometry (Aqua Regia extract). In addition, subsidiary soil pits were made for sampling at 0–5, 5–10, and 10–20 cm depths. These samples were analyzed for physico-chemical properties and heavy metal content. The results showed a relatively low level of heavy metal pollution of soil in the mentioned towns. Surveys in Kondopoga revealed limited general-use areas containing some elements in concentrations exceeding Russian national maximum allowable (MAC) and tentative allowable (TAC) levels (Pb – 6x MAC, Cu – 9x TAC, Zn – 16x TAC), and with labile copper and zinc concentrations up to 2x–3x MAC. Soils of Kostomuksha exhibited relatively low levels of the analyzed heavy metals with concentrations generally not exceeding the regional background in all land use categories. It was only occasionally that pollutant concentrations (Pb, Ni, Cu, Zn) reached 1–2x MAC/TAC. The resultant data can be used in the monitoring of urban soils and for working out recommendations for environmental protection.
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Kondopoga和Kostomuksha(卡累利阿共和国)土壤重金属污染评估
在Kondopoga和Kostomuksha进行了调查,这两个地方的主要工业分别是纸浆和造纸以及铁矿石开采和选矿。从属于不同土地利用类别的场地的顶部0–10 cm土层中取样,并通过原子吸收分光光度法(Aqua Regia提取物)测定样品中重金属(Pb、Cu、Zn、Ni、Co、Cr、Mn)的含量。此外,在0–5、5–10和10–20 cm深度处制作了辅助土坑进行采样。对这些样品进行了物理化学性质和重金属含量分析。结果表明,上述城镇的土壤重金属污染水平相对较低。Kondopoga的调查显示,一些元素的浓度超过了俄罗斯国家最高允许(MAC)和暂定允许(TAC)水平(Pb–6x MAC、Cu–9x TAC、Zn–16x TAC),铜和锌的不稳定浓度高达2x–3x MAC。Kostomuksha的土壤中所分析的重金属含量相对较低,在所有土地利用类别中,其浓度通常不超过区域背景。污染物浓度(Pb、Ni、Cu、Zn)偶尔达到1–2倍MAC/TAC。所得数据可用于城市土壤监测和制定环境保护建议。
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来源期刊
CiteScore
0.90
自引率
0.00%
发文量
15
审稿时长
8 weeks
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