大麦与谷类科学2023，Vol.40Issue(6)：14-22,9.DOI:10.14069/j.cnki.32-1769/s.2023.06.003
盐城市典型地块周边土壤重金属污染及环境质量风险评价
Soil Heavy Metal Pollution and Environmental Quality Risk Assessment Around Typical Plots in Yancheng City
摘要
Abstract
By evaluating the risk of heavy metal pollution in industrial parks,transportation arteries,urban suburbs and port areas,a basis was provided for the agricultural utilization in their suburbs.The detection and environmental quality risk assessment of zinc(Zn),copper(Cu),cadmium(Cd),chromium(Cr),nickel(Ni),lead(Pb),mercury(Hg)and arsenic(As)were conducted in the 74 points of surrounding agricultural land and plants(wheat,barley and reeds)in the west traditional agricultural area,the industrial belt of the old National Highway 204-urban industrial park,and the coastal port area.The results showed that the 8 elements content in the soil at the measured site all exceeded the geochemical benchmark values of soil elements in Jiangsu Province.The elements content in all spot samples exceeded by more than 30％were Cd(100.00％),Cu(75.68％),Zn(60.81％),As(51.39％)and Hg(36.00％),respectively,in which Cd(66.67％)and As(4.00％)content exceeded the standard according to the screening values in GB 15618-2018"Soil Environmental Quality-Risk Control Standard for Soil Contamination of Agricultural Land",while taking the control value as a reference,only Cd content exceeded the standard,with an exceeding proportion of 20.27％.The results of single factor pollution index and comprehensive pollution index indicated that the typical plots of old National Highway204-urban industrial park and the areas west of it were prone to moderate to severe Cd pollution,resulting in high environmental quality risks,while the plots to the east was slightly polluted with Cd,and the risk was relatively low.The detection results of the effective content of 8 heavy metals and the corresponding element content in plants showed that the content of these 8 elements were all below the standard value of plant element limits,and had no significant impact on the growth and development of the tested plants,reflecting the complex migration and transformation characteristics of heavy metals in the soil-plant system.关键词
重金属/污染治理/镉/典型区块/交通要道/港口区/环境质量Key words
Heavy metal/Pollution control/Cadmium/Typical block/Transportation artery/Port area/Environmental Quality分类
农业科技引用本文复制引用
刘兴华,杨丽,秦春,丁颖,刘艳艳,潘宗瑾..盐城市典型地块周边土壤重金属污染及环境质量风险评价[J].大麦与谷类科学,2023,40(6):14-22,9.基金项目
盐城市重点研发计划(社会发展)(YCBE202315) （社会发展）
国家级星火计划(2014GA690203). （2014GA690203）
