藉铋-亚硝基R盐-结晶紫反应高灵敏分光光度测定痕量铋  

A Sensitive Spectrophotometric Method for the Determination of Trace Bismuth Based on the Bismuth-Nitroso-R Salt-Crystal Violet Reaction

作　　者：朱展才[1] 王杨春[1] 黄建华 

机构地区：[1]漳州师范学院化学系,漳州363000

出　　处：《分析化学》1996年第11期1269-1272,共4页Chinese Journal of Analytical Chemistry

基　　金：福建省科委三项科技费用资助

摘　　要：本文提出了一个超高灵敏测定铋的分光光度方法。缔合物的吸收峰位于600um，表观摩尔吸光系数ε600＝3．0×109L·mol’·cm－1，铋浓度在0～200ng／L范围内遵守比耳定律。本法用于水样和合成试样中痕量铋的测定，结果较满意。对缔合物组成与显色机理进行了初步讨论。A superhigh sensitive spectrophotometric method was developed for the determination of trace bismuth. The ion association complex exhibits maximum absorption at 600nm with an apparent molar absorptivity of 3. 0× 109L - mol 1. cm 1. Beer' s law is obeyedin the range of 0~200 ng/L for Bi3-. The proposed method has been used for the determination of Bi3- in water and synthetic sample with satisfactory results. The composition of association complex and reaction mechanism have been discussed.

关 键 词：铋 结晶紫 亚硝基R盐 缔合物 分光光度法 

分 类 号：O614.532[理学—无机化学] O657.3[理学—化学]