摘要
土壤重金属背景值浓度是土壤环境质量评估的重要标准。通过进行系统、大规模的采样,计算提出了山西中部地区土壤重金属含量背景值。研究结果表明,山西中部地区土壤Cd含量的背景值为0.087mg/kg、Cr为46.90mg/kg、Cu为17.62mg/kg、Ni为26.50mg/kg、Pb为26.02mg/kg、Zn为57.95mg/kg,这6种土壤重金属元素背景值均低于国家土壤环境质量一级标准(GB15618-1995)。与全国土壤背景值比较,山西省中部地区的Cd、Ni、Pb含量与全国水平基本一致,而Cr、Cu、Zn均小于全国对应值。
Soil background concentrations of heavy metals are important criteria for the assessment of soil environmental quality.The background values of soil heavy metals （Cd,Cr,Cu,Ni,Pb and Zn） are investigated based on an extensive investigation in the middle of Shanxi.The revised background concentrations of the soils in Shanxi are proposed to be 0.087 mg/kg for Cd,46.90 mg/kg for Cr,17.62 mg/kg for Cu,26.50 mg/kg for Ni,26.02 mg/kg for Pb,57.95 mg/kg for Zn.All the heavy metals in the soils are lower than Grade Ⅰ of environmental quality standard for soils.Compared with the national soil background value,Cd,Ni and Pb content in the central region of Shanxi Province is consistent with the national,but the contents of Cr,Cu,Zn are less than the corresponding values of the whole nation.
出处
《中国农村水利水电》
北大核心
2014年第4期59-61,64,共4页
China Rural Water and Hydropower
基金
亚洲开发银行技术援助赠款项目(0188-PRC)
关键词
土壤
背景值
重金属
山西中部
黄土高原
soil
background concentration
heavy metal
middle of Shanxi Province
Loess Plateau
