山西农业大学学报（自然科学版）2019，Vol.39Issue(3)：65-72,8.DOI:10.13842/j.cnki.issn1671-8151.201809057
安太堡煤矿复垦区土壤重金属含量及污染评价
Assessment of heavy metal contamination and their contents in the soil of coal rehabilitation areas in Pingshuo,Shanxi province
摘要
Abstract
[Objectives]This study was conducted in the Antaibao Opencast Coal Mine in Pingshuo,Shanxi Province to investigate the pollution characteristics of heavy metals in the reclaimed soil and provide a scientific evidence for land reclamation and rational use of reclaimed soil.[Methods]The contents of eight heavy metals (Cr,Pb,As,Hg,Cd,Ni,Cu,Zn)were measured using acid digestion method.Contamination and ecological risk assessment of heavy metals were conducted based on the heavy metals' total content in reclamation soil under different reclamation modes.Single-factor index method and Nemerow comprehensive pol-lution index method was applied to evaluate the status of heavy metals at each sampling point.[Results]showed that the concen-trations of all heavy metals in the reclaimed soil were all below the standard values determined by GB15618-2018 "Soil Environ-mental Quality Control of Soil Pollution Risk of Agricultural Land (Trial )".The degree of different heavy metals'single pollution index was in the order of PAs>PCu>PCr>PZn>PNi>PCd>PPb>PHg ,and the Nemero comprehensive pollution index was between 0.318 and 0.389 which indicated that the soil condition reached up to the cleanliness level.The potential ecological risk level of different heavy metals was determined as the order of EAs>ECd>ECu>ENi>ECr>EPb>EHg>EZn ,and the potential eco-logical risk index was between 9.93 and 12.65 which displayed a slightly risk degree.The results of KMO and Bartlett sphericity test demonstrated that tested heavy metals in the soil under different reclamation modes might share the common resources.[Con-clusion]As、Cd and Ni possessed the greatest potentially ecological risk in reclaimed soil at Antaibao opencast mine because their contents are easily to be influenced by human activities.The increase of the reclamation years and the different reclaimed vegeta-tion patterns didn't produce a regular alternation of heavy metal content as well as pollution coefficient,which indicated that the content of the reclaimed matrix itself and the heap leaching of coal gangue were the more important factors affecting the soil envi-ronmental quality.关键词
复垦土壤/重金属/污染评价/潜在生态风险评价/安太堡露天煤矿Key words
Land reclamation/Heavy metals/Pollution assessment/Potential ecological risk/Antaibao opencast coal mine分类
资源环境引用本文复制引用
江山,刘焕焕,张菁,王改玲..安太堡煤矿复垦区土壤重金属含量及污染评价[J].山西农业大学学报（自然科学版）,2019,39(3):65-72,8.基金项目
山西省国际科技合作项目(201703D421002) （201703D421002）
山西省煤基重大科技攻关项目(FT2014-03) （FT2014-03）
山西省重点研发计划(重点)项目(201603D211105) （重点）
日本学术振兴会科学研究费辅助金(16H05633) （16H05633）
山西省留学基金资助项目(2015-060) （2015-060）
