分光光度法研究JFC在煤尘表面的吸附行为  

Study of Absorption Behavior of JFC on Surface of Coal Dust by Spectrophotometric

作　　者：杨静[1] 王振华[1] 谭允祯[1] 商岩冬[1] 

机构地区：[1]山东科技大学化学与环境工程学院,山东青岛266510

出　　处：《煤矿安全》2008年第2期1-3,共3页Safety in Coal Mines

基　　金：山东省科技攻关项目(2005GG3208105;2005GG3210003)

摘　　要：提出了用KI-I2做显色剂的分光光度法测定非离子表面活性剂JFC浓度的新方法。实验表明,该方法的最佳实验条件是测定波长为510 nm,显色时间为30 min,工作曲线线性相关系数为0.999 3。该方法显色迅速、工作曲线线性相关性好、试剂易得、操作简单,利用该方法研究了JFC在煤尘表面的吸附行为。研究发现,在稀溶液范围内,JFC在上煤样的吸附均符合Lang-muir等温方程,且吸附量的大小随挥发分的增加逐渐增大,随粒度的减小而逐渐增大。The paper put forward the new method of using the speetrophotometry testing the concentration of nonionie surfaetant with KI - 12 ehromogenie agent. The experiment shows that the best testing wavelength is 510nm, the time of ehromogenie reaction is 30min and the correlation coefficient of the standard curve is 0.9993. As the ehromogenie reaction is quick, the correlation coefficient approach to 1 and the reagent is easy to get, it is obvious to use this method to study on the absorption behavior of JFC on the surface of coal dust. The absorption is in accord with Langmuir isothermal equation, the smaller coal with higher volatile can absorpt more surfaetant.

关 键 词：煤尘 JFC 吸附 分光光度法 

分 类 号：TD714[矿业工程—矿井通风与安全]