伊河流域(栾川-嵩县段)土壤重金属元素变化特征及元素含量变化预测分析  

Change Characteristics of Soil Heavy Metal Elements and Prediction Analysis of Eement Content in Yihe River Basin(Luanchuan-Songxian Section)

作　　者：吴明明 黄杨 张军正 王焓钰 Wu Mingming;Huang Yang;Zhang Junzheng;Wang Hanyu(Henan Provincial Geological Research Institute,Henan,450016)

机构地区：[1]河南省地质研究院,河南450016

出　　处：《当代化工研究》2024年第13期67-69,共3页Modern Chemical Research

摘　　要：本文通过对比2016年和2022年伊河流域(栾川-嵩县段)土壤重金属数据,采用平均相对累积率计算和年均增长量计算方法,探究伊河流域(栾川-嵩县段)2016年和2022年土壤重金属变化特征并对其含量变化做出预测分析。其中伊河流域(栾川-嵩县段)土壤中Cr元素平均相对累积率17.1%,年均增长量为0.02mg/kg·a^(-1),Cd元素平均相对累积率26.7%,年均增长量为2.77mg/kg·a^(-1),具有在持续增长下超出风险管制值和管控值范围的风险。Hg平均相对累积率-89.2%,年均增长量为-0.24mg/kg·a^(-1),Pb平均相对累积率-40.7%,年均增长量为-14.23mg/kg·a^(-1),存在下降趋势,在现有措施下对存在污染风险土地进行管控修复有望使流域内土壤中Hg和Pb元素含量水平保持在风险筛选值以下。By comparing the data of soil heavy metals in the Yihe River basin(Luanchuan-Songxian Section)in 2016 and 2022,this paper uses the method of calculating the average relative accumulation rate and the average annual increase amount to explore the change characteristics of soil heavy metals in the Yihe River basin(Luanchuan-Songxian section)in 2016 and 2022,and predicts the change of soil heavy metals content.In the Yihe River Basin(Luanchuan-Songxian Section),the average relative accumulation rate of Cr element was 17.1%,and the average relative accumulation rate of Cr element was 0.02 mg/kg·a^(-1),the average relative accumulation rate of Cd element was 26.7%,and the average annual increase rate was 2.77 mg/kg·a^(-1).It has the risk of exceeding the range of risk control values and control values under continuous growth.The average relative accumulation rate of Hg was-89.2%and the average annual growth rate was-0.24 mg/kg·a^(-1),the average relative accumulation rate of Pb was-40.7%and the average annual growth rate was-14.23 mg/kg·a^(-1),showing a decreasing trend.It is expected that the Hg and Pb content levels in the soil in the basin can be kept below the risk screening value by controlling and repairing the land with pollution risk under the existing measures.

关 键 词：土壤重金属污染 重金属元素变化特征 重金属元素变化预测 

分 类 号：X53[环境科学与工程—环境工程]