| Micro determination of ascorbic acid using methyl viologen. | |
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MedLine Citation:
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PMID: 19071717 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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A new simple and sensitive analytical spectrophotometric method is developed for the determination of ascorbic acid reduces methyl viologen to form a stable blue coloured free radical ion. This method has a sensitivity and lower limit detection of 0.1mugml(-1) of ascorbic acid (0.1ppm) which is comparable to the flow injection analysis reported earlier. Beer's law is obeyed over the concentration range of 1.0-10mugml(-1) of ascorbic acid per 10ml of the final solution (0.1-1.0mugml(-1)) at 600nm. The molar absorptivity and Sandell's sensitivity were found to be 1.5x10(5)+/-100lmol(-1)cm(-1) and 0.001mugcm(-2), respectively. The method has been applied to the determination of ascorbic acid in food, pharmaceuticals and biological samples. |
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Authors:
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E K Janghel; V K Gupta; M K Rai; J K Rai |
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Publication Detail:
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Type: Journal Article Date: 2007-01-08 |
Journal Detail:
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Title: Talanta Volume: 72 ISSN: 1873-3573 ISO Abbreviation: Talanta Publication Date: 2007 May |
Date Detail:
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Created Date: 2008-12-22 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2984816R Medline TA: Talanta Country: England |
Other Details:
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Languages: eng Pagination: 1013-6 Citation Subset: - |
Affiliation:
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Chhattisgarh Institute of Technology, Near Parri Nala, G.E. Road, Rajnangaon, Chhattisgarh, India. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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