CAJ | 학술논문

采集了攀枝花市巴关河流域土壤剖面样品，探讨了与工矿业活动关系密切的Cu、Pb、Zn、Cd、Ni、V、As等重金属元素的含量和空间分布特征；并在此基础上采用改进的BCR法对V、Ni、Cd进行了重金属元素形态分析。研究结果显示，6个剖面重金属元素的平均含量与四川背景值及国家土壤环境质量标准存在着较大差异。除Pb外，其他重金属元素平均含量均不同程度高于四川背景值及国家土壤环境质量二级标准。上、中、下游土壤剖面各层的V、Ni主要以残渣态存在，上游土壤剖面各层V的残渣态占总量的百分比范围为86.79％～89.10％，中游为92.08％～94.87％，下游为89.21％～93.57％。上游土壤剖面各层Ni残渣态占总量的百分比范围为81.03％～86.39％，中游为83.23％～92.30％，下游为87.49％～89.77％。 Cd的形态分布较为特殊，酸可提取态与可还原态占主要部分，上游土壤剖面各层酸提取态占总量的百分比范围为27.75％～41.69％，中游为4.76％～21.45％，下游为18.24％～46.61％，上游土壤剖面各层可还原态占总量的百分比范围为24.67％～54.29％，中游为18.31％～54.22％，下游为14.16％～31.18％，容易发生迁移转化，应严格控制其在土壤中的含量。
채집료반지화시파관하류역토양부면양품，탐토료여공광업활동관계밀절적Cu、Pb、Zn、Cd、Ni、V、As등중금속원소적함량화공간분포특정；병재차기출상채용개진적BCR법대V、Ni、Cd진행료중금속원소형태분석。연구결과현시，6개부면중금속원소적평균함량여사천배경치급국가토양배경질량표준존재착교대차이。제Pb외，기타중금속원소평균함량균불동정도고우사천배경치급국가토양배경질량이급표준。상、중、하유토양부면각층적V、Ni주요이잔사태존재，상유토양부면각층V적잔사태점총량적백분비범위위86.79％～89.10％，중유위92.08％～94.87％，하유위89.21％～93.57％。상유토양부면각층Ni잔사태점총량적백분비범위위81.03％～86.39％，중유위83.23％～92.30％，하유위87.49％～89.77％。 Cd적형태분포교위특수，산가제취태여가환원태점주요부분，상유토양부면각층산제취태점총량적백분비범위위27.75％～41.69％，중유위4.76％～21.45％，하유위18.24％～46.61％，상유토양부면각층가환원태점총량적백분비범위위24.67％～54.29％，중유위18.31％～54.22％，하유위14.16％～31.18％，용역발생천이전화，응엄격공제기재토양중적함량。
Soil samples of Baguan River Basin in Panzhihua city and discussed heavy metal element content and spatial distribution characteristics like Cu,Pb,Zn,Cd,Ni,V related to mining activities were collected.Analyzed heavy metal element fractions like V,Ni,Cd using advanced BCR method.Results showed that there were signifi-cant differences between background value of Sichuan and the national standard value of soil environmental standard two of the average contents of heavy metals of six profile, the average heavy metal content except Pb were higher than the national standard value of soil environmental standard two and Sichuan standard in varying degrees.V and Ni existed in residual form in upstream, midstream and downstream.Element V accounted for 86.79%~89.10%in residual form in upstream, 92.08%~94.87% in midstream, and 89.21%~93.57% in downstream.Ni ac-counted for 81.03%~86.39%in residual form in upstream, 83.23%~92.30% in midstream, and 87.49%~89.77%in downstream.The fraction of Cd was special.Acid extractable fraction and reducible fraction accounted for most part.For acid extractable fraction, 27.75%~41.69% in upstream, 4.76%~21.45% in midstream, and 18.24% ~46.61% in downstream.For reducible fraction, 24.67% ~54.29% in upstream, 18.31% ~54.22%in midstream, and 14.16%~31.18% in downstream.Cd was likely to migrate and transform.So the content of Cd in soil should be strictly controlled.