安徽省重点镉污染区土壤重金属Cd红外光谱特征研究  

Characteristic of Infrared Spectrum of Heavy-Metal Cd in Soils of Key Cadmium Polluted Areas in Anhui Province

作　　者：史磊[1] 王西荣[2] 范慧 陈时亮[1] SHI Lei(Anhui Technical College of Industry and Economy,Hefei Anhui 230051,China)

机构地区：[1]安徽工业经济职业技术学院,安徽合肥230051 [2]安徽省地质实验研究所(自然资源部合肥矿产资源监督检测中心),安徽合肥230001

出　　处：《长春工程学院学报（自然科学版）》2023年第2期104-109,共6页Journal of Changchun Institute of Technology：Natural Sciences Edition

基　　金：安徽省教育厅项目(2021ZK07)。

摘　　要：采用红外光谱特征可以分析土壤中重金属Cd。应用傅立叶红外光谱分析测试仪对采集到的6个具有代表性的土壤样品进行快速分析与测试,定性分析结果表明,土壤中的矿物成分为蒙脱石、伊利石、白云母、蛭石、滑石、高岭石(结晶程度好与差的)、角闪石和镁角闪石等。土壤中的Cd^(2+)以平衡电价方式的晶面吸附在黏土矿物上,形成的共价键的键型振动是Si—O—Cd键,为弯曲振动,吸收特征峰为437.52 cm^(-1),439.75 cm^(-1),457.45 cm^(-1),462.69 cm^(-1),464.44 cm^(-1),467.81 cm^(-1)。Infrared spectral features can be used to analyze heavy metal Cd in soil.The Fourier transform infrared spectroscopy analyzer is used to quickly analyze and test six representative soil samples collected.The qualitative analysis results show that the mineral components in the soil are montmorillonite,illite,muscovite,vermiculite,talc,kaolinite(with good or bad crystallization),hornblende,and magnesium hornblende.The Cd^(2+)ions in the soil are adsorbed on the clay minerals in a balanced electrovalent manner on the crystal surface,forming a bond type vibration of Si-O-Cd bond,which is a bending vibration.The absorption characteristic peaks are 437.52cm^(-1),439.75cm^(-1),457.45cm^(-1),1462.69cm^(-1),464.44cm^(-1)and 467.81cm^(-1).

关 键 词：土壤 红外光谱分析 特征吸收峰 黏土矿物 

分 类 号：X53[环境科学与工程—环境工程] O657.34[理学—分析化学]