SPECTROPHOTOMETRIC METHOD FOR THE ESTIMATION OF VITAMIN-C IN DRUG FORMULATIONS

被引：4
|
作者：
QURESHI, SZ
SAEED, A
HAQUE, S
RAHMAN, N
机构：
[1] Analytical Chemistry Division, Department of chemistry, Aligarh Muslim University
来源：
ANALYTICAL LETTERS | 1990年 / 23卷 / 06期
关键词：
4- dinitrobenzene spectrophotometry; Ascorbic acid determination l-chloro-2;
D O I：
10.1080/00032719008053441
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The use of l-chloro-2, 4-dinitrobenzene is described for spectrophotometric estimation of ascorbic acid. The procedure is based on the interaction of ascorbic acid with l-chloro-2, 4-dinitrobenzene in alkaline medium. The product absorbs maximally at 38Oinm, and has the molar absorptivity 0.14 x 1041 mole-1cm-1. Beer's law is obeyed in the concentration range 0.12-0.6 mg/10ml of ascorbic acid. © 1990, Taylor & Francis Group, LLC. All rights reserved.
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页码：995 / 1003
页数：9
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