Chromotropic acid as a reagent for ultraviolet spectrophotometric determination of hexavalent chromium in water

被引：9
|
作者：
Zhao, ZQ [1 ]
Gao, RM
Li, JT
Liu, SR
Liu, H
机构：
[1] Hebei Normal Univ, Dept Chem, Shijiazhuang 050016, Hebei, Peoples R China
[2] Univ Sci & Technol China, Acad Sinica, Grad Sch, Dept Chem, Beijing 100039, Peoples R China
[3] Heibei Med Univ, Shijiazhuang 050017, Hebei, Peoples R China
来源：
MICROCHEMICAL JOURNAL | 1998年 / 58卷 / 01期
关键词：
D O I：
10.1006/mchj.1996.1460
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A new ultraviolet spectrophotometric method for hexavalent chromium in water based on the oxidation of chromotropic acid by Cr(VI) in 0.12 mol/liter HCl medium is described. The molar absorptivity is 1.76 X 10(4) liters.mol(-1) cm(-1). The detection limit is 0.024 mu g ml(-1) Cr. This sensitive and very simple ultraviolet spectrophotometric method for microquantitative determination of Cr(VI) in water has good precision and accuracy. (C) 1998 Academic Press.
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页码：1 / 5
页数：5
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