云南化工Issue(4)：26-30,5.DOI:12.3969/j.issn.1004-275X.2015.04.008
铋－钨酸盐－罗丹明6G 体系光度法测定痕量铋的研究
Study on the Spectrophotometric Method for the Determination of Bismuth with Bismuth -Tungstate-Rhodamine 6G System
林明卉 1李志林 1敬东阳1
作者信息
- 1. 云南氟业环保科技股份有限公司，昆明 650021
- 折叠
摘要
Abstract
A spectrophotometric method for the determination of Bi(III)was developed based on the ion-associated reaction among bismuth(III),tungstate and butyl rhodamine 6G in H2 SO4 medium.The good linear relationship between the absorbance at 550 nm and the concentration of Bi(III)in the range of 0.2 ~1.0 μg/L was obtained with the apparent molar absorptivity of 7.27 ×107 L·mol -1 ·cm -1 and limit of de-tection (obtained from 3σ/K.here,σis 3 times of the standard deviation of the blank value,and K is the slope of the working curve )of 0.035 μg/L.The method,which was not interfered by most of the common i-ons,could be used for the determination of bismuth in running water and environmental water samples.The relative standard deviation of the results obtained by this method was below 3.0%,and the recovery was in the range of 95 ~105%.关键词
铋/罗丹明 6G/离子缔合物/光度法Key words
bismuth/rhodamine 6G/ion-associated complex/spectrophotometry引用本文复制引用
林明卉,李志林,敬东阳..铋－钨酸盐－罗丹明6G 体系光度法测定痕量铋的研究[J].云南化工,2015,(4):26-30,5.
