分光光度法检测废水中的硫氰酸根含量  

Spectrophotometric determination of thiocyanate content in wastewater

作　　者：刘建军[1] 李建芬[1] 周汉芬[1] 

机构地区：[1]武汉工业学院化学与环境工程学院,湖北武汉430023

出　　处：《武汉工业学院学报》2009年第4期60-62,共3页Journal of Wuhan Polytechnic University

基　　金：湖北省自然科学基金重点资助项目(2008CDA033)

摘　　要：介绍了一种检测废水中硫氰酸根的简便方法,即采用分光光度法,以硝酸铁为显色剂,吐温-80和丙酮为稳定剂,在438 nm波长处检测废水中的硫氰酸根含量。线性范围为2—20 mg/L,最低检出限为1 mg/L。同时探讨了非离子表面活性剂吐温-80和丙酮存在下,Fe3+与SCN-的显色反应条件。该法可用于直接检测工业和生活废水。This paper describes a simple method of determination of thiocyanate content in wastewater. The thiocyanate content in wastewater was determined by Spectrophotometry in the 438nm wavelength with iron nitrate as colouring reagent and Tween-80 and acetone as stabilizer. Calibration curves are linear in the range 2--20 mg/L, Fe^3＋ with the detection limit of 1 mg/L. The conditions of colour reaction on and SCN are also investigated in the presence of non-ionic surfactant Tween-80 and acetone. This method is very ideal for the determination of thiocyanate content in industrial and domestic wastewater.

关 键 词：分光光度法 检测 吐温-80 废水 硫氰酸根 

分 类 号：TQ085[化学工程]