论文部分内容阅读
本文提出一种双络合体系Ｋ－系数分光光度法同时测定Ｍｏ（Ⅵ）与Ｗ（Ⅵ）的新方法．它是 基于酒石酸钾钠对Ｍｏ（Ⅵ）和Ｗ（Ⅵ）这两种离子与苯芴酮－ＣＰＣ在０．３ｍｏｌ·Ｌ－１盐酸溶液中形成络 合物的限制能力的差异，通过测量存在和不存在酒石酸钾钠的这二种显色体系在５１０ｎｍ处的吸光 度和所计算的Ｋ－系数消除Ｍｏ（Ⅵ）与Ｗ（Ⅵ）彼此间的干扰．本文已被用于钢铁中钼与钨的测定， 获得满意结果．
In this paper, a new method for the simultaneous determination of Mo (Ⅵ) and W (Ⅵ) by double complex system K-factor spectrophotometry is proposed. It is based on the difference in the ability of potassium sodium tartrate to limit the formation of complexes of Mo (Ⅵ) and W (Ⅵ) with benzofluorenone-CPC in 0.3 mol·L -1 hydrochloric acid solution. By measuring the presence of The absorbance at 510 nm and the calculated K-factor of these two chromogenic systems in the absence of potassium sodium tartrate counteract the interference of Mo (VI) with W (VI) with each other. This article has been used in the determination of molybdenum and tungsten in steel to obtain satisfactory results.