白城市工业园区土壤重金属含量调查与评价
2021-11-07路晓慧刘宝林林思敏李金凤杭璐刘思序罗馨雨尹方圆
路晓慧 刘宝林 林思敏 李金凤 杭璐 刘思序 罗馨雨 尹方圆



摘 要:为研究白城市工业园区土壤重金属含量,于2017年10月采集10份白城市工业园区内表层土壤样品(0~5cm),测定重金属Cu、Zn、Cd、Cr、Ni、Fe、Mn、As的含量并进行环境质量综合评价。结果表明:以白城市土壤环境背景值作为评价标准,工业园区土壤受到了不同程度的污染,尤其以Ni的污染最为严重;各采样点以内梅罗指数法计算出的PN值均大于5,评价结果为重度污染;Ni为主要污染因子,其主要源自于原有镍厂的历史排放。
关键词:工业园;土壤;重金属污染;综合评价
中图分类号 X53 文献标识码 A文章编号 1007-7731(2021)20-0107-03
Survey and Assessment of Contents of Heavy Metals in Soil Collected from Industrial Park of Baicheng City
LU Xiaohui et al.
(College of Chemistry, Changchun Normal University, Changchun 130032, China)
Abstract: In order to study the contents of heavy metals in surface soil in industrial park of Baicheng, Jilin Province, China, 10 top soil samples (0~5cm) were collected in October, 2017 to determine the concentrations of heavy metals including Cu, Zn, Cd, Cr, Ni, Fe, Mn, As.The results showed that the pollution of heavy metal in different degrees were found in soil of the industrial park when the soil environmental background values of Baicheng City were taken as the reference standard. The PN calculated by Nemerow Index method in all the sampling sites were greater than 5, indicating a very serious pollution of heavy metals in top soil of industrial park of Baicheng. The index of Ni was highest in the heavy metals detected, which is probably due to the historical emission.
Key words: Industrial park; Soil; Heavy metal pollution; Comprehensive assessment
土壤是人類生存必不可少的自然条件之一,近年来,我国工业发展迅速,工业园区也随之增多,工业废渣、废气中重金属的累积和扩散等所导致的土壤重金属污染成了人们颇为关注的话题,很多重金属有毒性作用,有毒的重金属隐蔽性强,能长期性存在且不可降解、不可逆转,在导致土壤肥力和作物质量下降的同时还容易引发地下水污染,并且能通过食物链在植物、动物和人体内累积[1,2]。我国的学者对于工业园区的土壤重金属污染做了广泛的研究,赵秀峰等[3]对石化园区周边土壤重金属进行污染分析和评价发现周边农田土壤中表现为以Cd为主的多种重金属共同污染。王玉云等[4]等对四川雅安工业园区周边土壤重金属空间分布及污染评价研究发现土壤重金属受到了人为因素的干扰,工业园区部分位点的Pb和Zn超过国家标准值。……
