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：0
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作者：
Vasil Andruch
Monika Telepc˘áková
Ioseph S. Balogh
Nikoleta Urbanová
机构：
[1] Faculty of Science,
[2] P.J. Šafárik University,undefined
[3] Moyzesova 14,undefined
[4] SK-04154 Košice,undefined
[5] Slovak Republic,undefined
[6] Department of Chemistry,undefined
[7] College of Nyíregyháza,undefined
[8] Sostoi u. 31/b,undefined
[9] HU-4400 Nyiregyháza,undefined
[10] Hungary,undefined
来源：
Microchimica Acta | 2003年 / 142卷
关键词：
Key words: Chromium(VI); 2-[2-(4-methoxy-phenylamino)-vinyl]-1,3,3-trimethyl-3H-indolium chloride; complex formation; extraction; spectrophotometry.;
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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) × 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.
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页码：109 / 113
页数：4
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