ABSTRACT

Introduction

The development of coal power base (CPB) poses a severe challenge to the soil. We conducted a soil survey in Xilinhot CPB, to evaluate and analyze the pollution characteristics, potential ecological risk, and sources of six heavy metals (As, Pb, Cu, Zn, Mn, and Cd) in soil by using Geo-accumulation index, revised Nemerow integrated pollution index (RNIPI), and potential ecological risk index (RI).Outcomes/other: The results showed that the pollution of Cd and As were dramatic. The mean of Cd and As were 1.11 mg·kg^-1 and 25.13 mg·kg^-1, which were 42.55 times and 4.41 times higher than its local background value. The Geo-accumulation indices showed the contamination degree of Cd was strong and As was moderate, and the status of Cu, Pb, Zn, and Mn were uncontaminated. Xilinhot was strongly contaminated based on its RNIPI and RI values.Discussion: The accumulations of As, Pb, and Cd were mainly associated with anthropogenic sources, including coal mining and combustion, and industrial exhaust emissions. Cu, Mn, and Zn were primarily originated from the parent material (natural sources).Conclusion: This study provides scientific basis and effective countermeasures for the prevention and control of soil pollution in surrounding areas of CPB.

中文翻译：

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燃煤发电对附近土壤重金属污染特征和风险的影响

摘要

介绍

煤电基地的发展对土壤提出了严峻的挑战。我们在锡林浩特CPB进行了土壤调查，以利用地积累指数评估和分析土壤中六种重金属（As，Pb，Cu，Zn，Mn和Cd）的污染特征，潜在的生态风险和来源，修订了Nemerow综合污染指数（RNIPI）和潜在生态风险指数（RI）。结果/其他：结果表明，镉和砷的污染非常严重。镉和砷的平均值分别为1.11 mg·kg ^-1和25.13 mg·kg ^-1，分别是其本地背景值的42.55倍和4.41倍。地质累积指数表明Cd的污染程度强而As中等，并且Cu，Pb，Zn和Mn的状态未被污染。锡林浩特市的RNIPI和RI值受到严重污染。讨论：As，Pb和Cd的积累主要与人为来源有关，包括煤矿开采和燃烧以及工业废气排放。Cu，Mn和Zn主要来自母体材料（天然来源）。结论：本研究为CPB周边地区土壤污染的防治提供了科学依据和有效对策。