三溴偶氮氯膦-溴化十六烷基吡啶高灵敏度分光光度法测定痕量铋的研究和应用  

Study on Spectrophotometric Determination of Bismuth with Tribromo chlorophosphonazo—Bismuth—Hexadecylpyridinium Bromide System

作　　者：袁丁[1] 何治柯[1] 高华[1] 袁良杰[1] 罗庆尧[1] 曾云鹗[1] 

机构地区：[1]武汉大学化学系

出　　处：《冶金分析》1998年第6期10-11,20,共3页Metallurgical Analysis

摘　　要：研究了铋（Ⅲ）—三溴偶氮氯膦—溴化十六烷基吡啶显色体系的光度特性和显色反应条件，与二元显色体系相比，灵敏度和选择性均有显著提高。当λｍａｘ＝６５８ｎｍ时，表观摩尔吸光系数ε＝１．０５×１０５，线性范围为０～４μｇ／２５ｍｌ。该方法用于口服铋制剂病人血液及铅基合成样中微量铋的测定，获得了满意的结果。The colour reaction of tribromo chlorophosphonazo and hexadecylpyridinium bromide with Bi(Ⅲ) has been studied. This method is more sensitive and selective than that of binary complexes. The apparent molar absorptivity is 1.05×10 5L\5mol -1 \5cm -1 . The maximum absorption is at 658nm. The linear range is 0-4μg/25ml. The method has heen applied to determine Bi in human blood and lead base synthetic sample with satisfactory results.

关 键 词：铋 人血 铅基合成样 分光光度法 显色剂 

分 类 号：O614.532[理学—无机化学] R446.119[理学—化学]