Nitroso-R Salt As a Sensitive Spectrophotometric Reagent For the Determination of Vitamin C
作者:
S.P. Arya,
M. Mahajan,
期刊:
Analytical Letters
(Taylor Available online 1997)
卷期:
Volume 30,
issue 14
页码: 2541-2553
ISSN:0003-2719
年代: 1997
DOI:10.1080/00032719708001764
出版商: Taylor & Francis Group
关键词: Vitamin C determination;Nitroso - R salt;Iron(III);Potassium citrate
数据来源: Taylor
摘要:
An analytical procedure based on the reaction of nitroso-R salt with reduced iron(II) is developed for the analysis of ascorbic acid. The absorbance of the resulting green colored complex is measured at 705 nm. Beer's law is obeyed over the range 0.2–3.0 μg ml−1ascorbic acid with a molar absorptivity of 4.5 × 104l mol−1cm−1. The substances commonly found with vitamin C formulations are tolerated. Some of the marketed products of ascorbic acid were analyzed by the proposed method with satisfactory results.
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