摘要
渭南市是陕西的“粮仓”,农田土壤更是矿山企业与人类关系最为密切的区域之一,研究矿山企业周边农田土壤的重金属污染状况具有重要意义。通过对渭南市矿山企业周边农田土壤进行科学布点,采集具有代表性的土壤样品180个,来研究样品中8种重金属的污染状况。通过使用SPSS软件进行Spearsman相关系数计算与主成分分析,发现重金属元素Hg、Cu、Zn、Pb、Cd的污染主要来源于人类活动,交通、燃煤、矿山开采、经济高速发展都是污染的原因。重金属元素As、Cr、Ni的污染受人类活动影响小,主要来源于土壤母质。使用积累指数法、富集因子法、潜在生态危害指数法对重金属污染进行综合评价,发现土壤中元素Pb属于中度污染,元素Cd、Hg、As存在一定的潜在生态危害,其余重金属为无污染到轻微污染。研究结果表明,渭南市矿山企业周边农田土壤已受到人类经济发展的影响,目前重金属污染状况属于轻微污染。
Weinan city is the“granary”of Shaanxi proviance,and farmland soil is one of the regions with the closest relationship between mining enterprises and humans.So studying the heavy metal pollution status of farmland soil around mining enterprises is of great significance.The pollution status of 8 heavy metals in the samples were studied through scientific distribution of farmland soil around mining enterprises in Weinan city and collected 180 representative soil samples.By using SPSS software for Spearman correlation coefficient calculation and principal component analysis,it was found that the pollution of heavy metal elements Hg,Cu,Zn,Pb,and Cd mainly came from human activities.Additionally,the transportation,coal burning,mining,and rapid economic development were all the reasons for the pollution.The pollution of heavy metal elements As,Cr,and Ni was less affected by human activities and mainly came from soil parent materials.A comprehensive evaluation of heavy metal pollution was conducted by land accumulation index method,enrichment factor method,and potential ecological hazard index method.It was found that the element Pb in the soil belonged to moderate pollution,while elements Cd,Hg,and As had certain potential ecological hazards.The remaining heavy metals were pollution-free or slightly polluted.The research results indicated that the farmland soil around mining enterprises in Weinan city had been affected by human economic development,and the current heavy metal pollution situation belonged to mild pollution.
作者
郭晋君
周弛
王蕾
朱瑞瑞
范智超
陈富民
葛毅
张锋
GUO Jinjun;ZHOU Chi;WANG Lei;ZHU Ruirui;FAN Zhichao;CHEN Fumin;GE Yi;ZHANG Feng(State Environmental Protection Key Laboratory of Monitoring for Heavy Metal Pollutants,Changsha,Hunan 410004,China;Shaanxi Environmental Monitoring Center,Xi′an,Shaanxi 710054,China;Hunan Province Environmental Monitoring Center Station,Changsha,Hunan 410019,China;Weinan Environmental Protection Monitoring Station,Weinan,Shaanxi 714000,China;Department of Audit of Shaanxi Province,Xi′an,Shaanxi 710000,China)
出处
《中国无机分析化学》
CAS
北大核心
2024年第9期1234-1241,共8页
Chinese Journal of Inorganic Analytical Chemistry
基金
陕西省重点研发计划项目(2023-YBSF-439)
国家环境保护重金属污染监测重点实验室开放基金资助项目(SKLMHM202319)。
关键词
土壤
重金属
污染
污染源解析
评价
soil
heavy metal
pollution
source apportionment
valuation
