作　　者： ; ; ; ;

机构地区： 广州大学环境科学与工程学院广州市污染控制与同位素应用技术重点实验室

出　　处： 《光谱学与光谱分析》 2007年第4期747-749,共3页

摘　　要： 考察了黄铁矿及矿渣中的表面羟基,发现矿渣中的双羟基是由矿渣中残留有黄铁矿引起的。漫反射红外光谱分析表明,在处理含铊废水过程中,黄铁矿及矿渣中表面羟基与铊离子发生作用。用黄铁矿处理后,表征双羟基的3550和3402cm-1峰减弱;用矿渣处理后,双羟基峰在减弱的同时,3550cm-1峰发生了明显位移(位移70cm-1)。可见区的反射光谱用于表征处理过程中的黄铁矿和矿渣的颗粒及比表面变化,解释了黄铁矿及矿渣在重复使用时其活性反而增强的原因。 The surface hydroxyls in pyrite and slag were investigated, and the result showed that the hydroxyls in pyrite slag were induced by residual pyrite. The diffuse reflectance infrared Fourier transform spectroscopy （DRIFTS） indicated that the surface hydroxyls in pyrite and slag reacted with thallium ion in the process of wastewater treatment. The 3 550 cm^-1 peak and 3 402 cm^-1 peak weakened after pyrite and slag treatment, nevertheless the 3 550 cm^-1 peak lowered and shifted to higher frequencies by about 70 cm^-1 with slag treatment. The reflectance spectroscopy in visible region was used to characterize the change of particle and specific surface in these treatment process, and furthermore, the fact that the activity of both pyrite and slag increased in repetitive use was explained.

关 键 词： 反射光谱 漫反射红外光谱 黄铁矿 矿渣 铊 表面羟基 废水处理

领　　域： [理学] [理学] [环境科学与工程]