摘要
合成了新试剂二安替比林－（邻－乙氧基）－苯基甲烷（ＤＡｏＥＭ）；研究了在Ｍｎ（Ⅱ）存在下，ＤＡｏＥＭ与Ｃｒ（Ⅵ）生成橙黄色化合物。该化合物最大吸收位于４８０ｎｍ，表观摩尔吸收系数ε＝２．０８×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，化合物至少可以稳定８ｈ，服从比尔定律范围为４～２００μｇ／Ｌ，用于含铬废水和电镀废液中铬的测定，结果满意。
Diantipyryl-(2-Ethoxy)-Phenylmethane (DAoEM) was synthesized.A highly sensitive spectro-photometric method has been developed for determination of chromium(Ⅵ) with DAoEM in the presence of Mn(Ⅱ).Cr(Ⅵ) reacts with DAoEM to form an orange-yellow product in phosphoric acid medium with the molar absorptivity of 2.08×10 5L·mol -1 ·cm -1 at 480nm.Beer's law is obeyed in the range of 4～200μg/L for Cr(Ⅵ).The method has been applied to the determination of chromium(Ⅵ) in waste solution and electroplating waste solution containing chromium with satisfactory results.
出处
《云南化工》
CAS
1997年第3期36-38,共3页
Yunnan Chemical Technology
基金
云南省教委自然科学基金
关键词
二安替比林
苯基甲烷
铬
分光光度法
diantipyryl-(2-Ethoxy)-phenylmethane chromium(Ⅵ) spectrophotometry
