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水溶性高聚物萃取分离光度法测定Sn~(4+)的研究

作  者:
杜建中;孙丽文;邓响平;黄旭
单  位:
湛江师范学院生命科学与化学学院
关键词:
锡;高聚物;分光光度法
摘  要:
酸性条件,无机盐存在的下,在聚乙二醇-邻二氮菲-铬天青-S-硫酸铵体系中,将Al3+、Cd2+、Co2+、Cu2+、Hg2+、Ni2+、Fe3+、Zn2+等离子萃取至有机相,将Sn4+保留在水相。利用苯芴酮与锡、CTMAB形成微溶性的橙红色络合物,波长在520nm时,利用分光光度法测定锡的含量。Sn4+含量在0.05~0.60μg/ml范围内符合朗伯比尔定律,摩尔吸光系数=1.05×105L/mol·cm。方法回收率为95%~105%。
译  名:
Determination of Sn~(4+) with Water-soluble Polymer Extraction by Spectrophotometry
作  者:
DU Jian-zhong,SUN Weng-li,DENG Xiang-ping,HUANG Xu (Department of Chemistry Zhanjiang Normal College, Zhanjiang 524048,China)
关键词:
stannum;polymer;spectrophotometry
摘  要:
A extraction-photometric method for determination of Sn4+ in water-soluble polymer was studied. The method in based on the water-soluble polymer solution separated two phases in the presence of inorganic salts. The separation and determination condition of Sn4+ in polyethylene glycol-4000, phenanthroline, chrome azurol S and ammonium sulfate system. The results shows that Sn4+ can be quantitatively separated from the Al3+、Co2+、Cu2+、Fe3+、Hg2+、Ni2+ and Zn2+ system. Stannum is coupled with phenylfuorone, CTMAB fespond and produced orange complex. The Stannum is determined by spectrophotometry. The linear range for determination of Sn4+ is 0.05~0.60μg/ml. The recovery was 95% ~105%.

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