铋、氧化铋、硫化铋在醋酸—硫脲中的溶解性研究  

Study of the Solubility of Bismuth,Bismuth Oxide and Bismuth Sulfide in the Acetic Acid Solution of Thiourea

作　　者：马哈亚.艾斯江 巴哈尔古丽.别克吐尔逊 段丽梅[1] 罗新泽[1] 

机构地区：[1]伊犁师范学院化学与生物科学学院,新疆伊宁835000

出　　处：《中国无机分析化学》2012年第2期65-68,共4页Chinese Journal of Inorganic Analytical Chemistry

基　　金：教育部留学回国人员科研启动基金资助项目(2008890)

摘　　要：通过研究铋(Ⅲ)与硫脲络合染色,测得络合物最大吸收峰位于460nm波长处,Bi(Ⅲ)含量在0.059～5.7μg/mL范围内符合比尔定律,回归方程Y=0.0117+0.17319 X;相关系数R=0.9999;相对标准偏差RSD为2.66%;检出限为0.013μg/mL;摩尔吸光系数为3.72×104 L.mol-1.cm-1。实验结果表明,铋、氧化铋和硫化铋在醋酸-硫脲中的溶解度分别是0.077、1.347、1.245μg/mL。经比较发现铋、氧化铋和硫化铋在醋酸-硫脲中的溶解性大小是:氧化铋>硫化铋>铋。铋、氧化铋和硫化铋的回收率分别是97.4%、98.1%、96.6%。Bismuth （IID reacts with thiourea and form a colored complex at which of the maximum ab- sorption is 460 nm wavelength. The relationship between the absorptions and the concentrations of Bi （III） in the range of 0. 059-5.7μg/mL obeys Beer＇s Law. The regression equation was Y=0. 0117q-0. 17319X with the correlation coefficient R=0. 9999. The relative standard deviation （RSD） was 2.66%and the de- tection limit was 0. 013 μg/mL. The molar absorptivity was 3.72 X 104 L.mol^l.cm^1. The experimental results show that the solubility of the bismuth oxide, bismuth and bismuth sulfide in the acetic acid solu- tion of thiourea was 0. 077, 1. 347 and 1. 245 μg/mL, respectively. The order of solubility increases as bis- muth oxide〉 bismuth sulfide〉 bismuth. The recoveries for bismuth oxide, bismuth and bismuth sulfide were 97.4%, 98.1% and 96.6%, respectively.

关 键 词：铋 氧化铋 硫化铋 硫脲 分光光度法 

分 类 号：O657.32[理学—分析化学]