林芝市巴宜区—工布江达路段土壤重金属分布特征分析  

Analysis of Distribution Characteristics of Heavy Metals in Soil of Bayi District-Gongbujiangda Road Section in Linzhi

作　　者：王珍 王良琦 WANG Zhen;WANG Liangqi(Resources&Environment college,Xizang Agriculture&Animal Husbandry University,Linzhi,Xizang,860000,China)

机构地区：[1]西藏农牧学院资源与环境学院,西藏林芝860000

出　　处：《高原农业》2025年第1期78-85,共8页Journal of Plateau Agriculture

基　　金：农业资源与环境科学专业建设项目(藏财预指2020-001)。

摘　　要：以林拉高级公路为调查对象,对公路路旁表层土壤进行调查和分布特征分析。选取林芝市巴宜区至工布江达路段更具有代表性。研究方法使用多种酸混合消解土壤样品,用原子吸收分光光度法确定公路沿线的土壤样品中重金属Pb、Cr、Zn、Cd、Mn、Cu的含量。结论表明林芝市巴宜区至工布江达路段公路土壤均受到不同程度的重金属污染,其中镉金属污染水平较为严重,铬金属污染水平最轻,较为清洁,其余重金属污染均处于不同程度的轻度污染,其污染程度由低至高Zn<Cu<Pb<Mn,公路不同位置受到重金属含量差异较明显。根据金属含量分析相关性结果表明:Cu、Pd、Cr三种重金属污染可能为同源污染,Zn、Cd金属污染为同源污染。Taking Linla high-grade highway as the investigation object,the surface soil beside the highway was investigated and its distribution characteristics were analyzed.The section from Bayi District to Gongbujiangda in Linzhi is more representative.The soil samples were digested with mixed acids,and the contents of heavy metals Pb,Cr,Zn,Cd,Mn and Cu in the soil samples along the highway were determined by atomic absorption spectrophotometry.The results showed that the soil of the highway from Bayi District to Gongbujiangda in Linzhi was polluted by heavy metals in different degrees,among which the pollution level of cadmium was serious,the pollution level of chromium was the lightest,and the other heavy metals were slightly polluted in different degrees,and the pollution degree was from low to high Zn<Cu<Pb<Mn.According to the correlation analysis of metal content,the results showed that the pollution of Cu,Pd and Cr may be homologous pollution,but the pollution of Zn and Cd was homologous pollution.

关 键 词：公路 重金属污染 路旁土壤 重金属含量 

分 类 号：X53[环境科学与工程—环境工程]