scholarly journals Radiometric determination of perchlorate by solvent extraction as ion association complex

1970 ◽  
Vol 19 (3) ◽  
pp. 412-414
Author(s):  
Tsunenobu SHIGEMATSU ◽  
Masakazu MATSUI ◽  
Toru AOKI ◽  
Masahiko ITO
Keyword(s):  
Solvent Extraction ◽  
Ion Association ◽  
Radiometric Determination ◽  
Association Complex

scholarly journals Solvent extraction/spectrophotometric determination of ammonia in the atmosphere with an ion-association reagent.

1989 ◽  
Vol 38 (1) ◽  
pp. 6-9 ◽  
Author(s):  
Noriko YAMAMOTO ◽  
Naoko KABEYA ◽  
Nahoko YAMAGISHI ◽  
Tsuneo SHIRAI
Keyword(s):  
Solvent Extraction ◽  
Spectrophotometric Determination ◽  
Ion Association

scholarly journals Ion Association Methods for the Determination of Fexofenadine in Pharmaceutical Preparations

2005 ◽  
Vol 2 (3) ◽  
pp. 199-202 ◽  
Author(s):  
L. D. Srinivas ◽  
P. Ravi Kumar ◽  
B. S. Sastry
Keyword(s):  
Pharmaceutical Preparations ◽  
Ion Association ◽  
Pharmaceutical Formulations ◽  
Bulk Sample ◽  
Acid Group ◽  
Carboxylic Acid Group ◽  
Spectrophotometric Methods ◽  
Safranin O ◽  
Association Complex

Two simple and sensitive Visible spectrophotometric methods (A and B) for the determination of Fexofenadine (FEX) in bulk sample and pharmaceutical formulations are described. Methods A and B are based on the formation of ion-association complex involving carboxylic acid group of FEX and the basic dyes, Safranin-O (SFN-O, method A), methylene blue (MB, method B). The results obtained in the above two methods are reproducible and are statistically validated and found to be suitable for the assay of Fexofenadine in bulk and its pharmaceutical formulations.

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