Investigation of 2-[2-(4-methoxy-phenylamino)-vinyl]-1,3,3-trimethyl-3H-indolium chloride as a new reagent for the determination of chromium(VI)

被引：21

作者：

Andruch, V

Telepcáková, M

Balogh, IS

Urbanová, N

机构：

[1] Safarik Univ, Fac Sci, SK-04154 Kosice, Slovakia

[2] Coll Nyiregyhaza, Dept Chem, HU-4400 Nyiregyhaza, Hungary

来源：

MICROCHIMICA ACTA | 2003年 / 142卷 / 1-2期

关键词：

chromium(VI); 2-[2-(4-methoxy-phenylamino)-vinyl]-1,3,3-trimethyl-3H-indolium chloride; complex formation; extraction; spectrophotometry;

D O I：

10.1007/s00604-003-0019-z

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The complex formation and extraction of chromium(VI) with 2-[2-(4-methoxy-phenylamino)-vinyl]-1,3,3-trimethyl-3H-indolium chloride reagent was studied by means of spectrophotometry. The influence of medium acidity, the concentration of chloride ions and dye reagent, the nature of the extractant and some other factors (time of extraction, stability of color, interference, etc.) on the absorbance of colored extracts were studied. The optimum conditions were found to be 0.02-0.1 M H2SO4, 1.0-1.5 M NaCl, (2.0-2.5) x 10(-4) M of reagent. The absorbance of the colored extracts obeys Beer's Law in the range of 0.26-7.28 mg L-1. The procedure of Cr(VI) extraction and spectrophotometric determination was examined.

引用

页码：109 / 113

页数：5

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