FOOD SCIENCE ›› 2005, Vol. 26 ›› Issue (9): 397-400.

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Determination of Sn~(4+) with Water-soluble Polymer Extraction by Spectrophotometry

 DU  Jian-Zhong, SUN  Li-Wen, DENG  Xiang-Ping, HUANG  Xu   

  1. Department of Chemistry Zhanjiang Normal College
  • Online:2005-09-15 Published:2011-09-20

Abstract: 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%.

Key words: stannum, polymer, spectrophotometry