采煤塌陷区周边土壤典型重金属污染监测方法研究

Study on Monitoring Method of Typical Heavy Metal Pollution in Soil Around Coal Mining Subsidence Area

为降低采煤塌陷区的重金属含量及污染情况,提出一种采煤塌陷区周边土壤典型重金属污染监测方法研究。通过三层采样法采集土壤样本,使用ADS光谱仪测定所得样本光谱曲线,并对曲线做去除高光谱包络线、反射率倒数对数、一阶微分和二阶微分指标处理,通过光谱曲线特征得出样本中含有Hg、As、Cu、Ni、Cr、Pb、Zn七种典型重金属元素,计算各元素含量完成污染程度测定。实验结果表明所设计监测方法监测结果符合事实,具有较高的实用价值。

In order to reduce the heavy metal content and pollution in the coal mining subsidence area,a research method for monitoring typical heavy metal pollution in the soil around the coal mining subsidence area is proposed.This study collects soil samples by three-layer sampling method and uses ADS spectrometer to measure the obtained sample spectral curve.It processes the curve to remove the hyperspectral envelope,the reciprocal logarithm of the reflectance,the first-order differential and the second-order differential index processing to obtain the results from the characteristics of the spectrum curve.The sample contains seven typical heavy metal elements:Hg,As,Cu,Ni,Cr,Pb,and Zn,and the content of each element is calculated to complete the pollution degree determination.The experimental results show that the monitoring results of the designed monitoring method conform to the facts and have high practical value.