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Potentiometric determination of saccharin in dietary products using mercurous nitrate as titrant.
MedLine Citation:
PMID:  18965696     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
A rapid, precise and low cost method for saccharin determination in dietary products is proposed. Saccharin in several samples is potentiometrically titrated with mercurous nitrate solution using a silver wire coated with a metallic mercury film as the working electrode, and the end point was found using a Gran's plot. The detection limit of sodium saccharin was 0.5 mg/ml and the best pH range was from 2.0 to 3.5. Sucrose, glucose, aspartame, sodium cyclamate, sorbitol, fructose, benzoic acid, salicylic acid and lactose do not interfere even in significant amounts. The interference due to the presence of chloride and/or phosphate ions can be eliminated by previous solvent extraction of this sweetener. Recovery of saccharin from various dietary products gave from 95.2 to 103.2% of the label claim.
Authors:
O F Fo; A J Moraes; G Dos Santos
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Talanta     Volume:  40     ISSN:  0039-9140     ISO Abbreviation:  Talanta     Publication Date:  1993 May 
Date Detail:
Created Date:  2008-10-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984816R     Medline TA:  Talanta     Country:  England    
Other Details:
Languages:  eng     Pagination:  737-40     Citation Subset:  -    
Affiliation:
Departamento de Quimica, Universidade Federal de São Carlos, C.P. 676, CEP 13565-905, São Carlos, S.P., Brazil; Instituto de Fisica e Quimica de São Carlos, Universidade de São Paulo, C.P. 369, CEP 13560-970, São Carlos, S.P. Brazil.
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