在OP作用下二安替比林苯基甲烷与Cr(Ⅵ)的光度法研究  

Diantipyryl Phenyl Methane and Cr(Ⅵ) Spectrophotometric Study with the Presence of Surfactant OP

作　　者：张艳华[1] 周先树[1] 王锐[2] 阮琼[1] 

机构地区：[1]云南师范大学化学化工学院,云南昆明650500 [2]昭通学院化学与生命科学学院,云南昭通657000

出　　处：《云南师范大学学报（自然科学版）》2017年第3期59-62,共4页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金资助项目(21665029);云南省教育厅科学研究基金资助项目(2014Y140)

摘　　要：对二安替比林苯基甲烷(DAPM)与铬(Ⅵ)的显色反应进行了研究.实验结果表明在磷酸、乳化剂OP及催化剂硫酸锰的存在下,水浴加热15min,二安替比林苯基甲烷与铬(Ⅵ)反应生成橙黄色络合物,λ_(max)=480nm,ε=1.56×10~5 L·mol^(-1)·cm^(-1).在0~12μg/50mL范围内,铬(Ⅵ)的含量符合朗伯-比尔定律.该体系选择性好,方法快速可靠,可用于铬含量的测定.This article has studied the spectrophotometric determination of chromium（VI） in the best color conditions with diantipyryl phenyl methane.The study concluded that in the presence of phosphoric acid, emulsifier OP and catalyst MnSO4, diantipyryl phenyl methane and chromium（Ⅵ） can react quickly to generate an orange complex after water bath heating 15 minutes. Maximum absorbance of the product is at 480 nm with the apparent molar absorptivity of 1.56×10^5 L·mol^-1·cm^-1. The content of Cr（Ⅵ） is in line with the Lambert Bill＇s law in the range of 0 - 12 μg/50 mL. The method has good selectivity, reliable and rapid method, and is used for the determination of chromium content.

关 键 词：铬(Ⅵ) 二安替比林苯基甲烷 分光光度法 

分 类 号：O657.32[理学—分析化学]