Extractive separation, preconcentration, spectrophotometric and atomic absorption determination of gold as an ion associate with 2-[2-(4-methoxyphenylamino)vinyl]-1,3,3-trimethyl-3H-indolium chloride

Autor:	Ioseph S. Balogh, Vasil Andruch, Ya. R. Bazel, R. Serbin
Rok vydání:	2011
Předmět:	Detection limit Aqueous solution Trace Amounts medicine.diagnostic_test Chemistry Extraction (chemistry) Analytical chemistry Chloride Analytical Chemistry law.invention Ion law Spectrophotometry medicine Atomic absorption spectroscopy Nuclear chemistry medicine.drug
Zdroj:	Journal of Analytical Chemistry. 66:800-806
ISSN:	1608-3199 1061-9348
DOI:	10.1134/s1061934811070112
Popis:	Extractive separation, preconcentration, and determination of gold as an ion associate (IA) with 2-[2-(4-methoxyphenylamino)vinyl]-1,3,3-trimethyl-3H-indolium chloride in extracts by spectrophotometry and atomic absorption spectrometry were studied. The optimal conditions were found for the extraction of IA with aromatic hydrocarbons and acetate esters. The main chemical analytical properties of the ion associate were determined. The formation of IA enables extractive separation of gold from Al, Cr, Mn, Fe, Co, Ni, Zn, Cu, Cd, Pt, Hg, Bi, Ag, Pb, and Pd. By varying the volume ratio of the aqueous and organic phases in the range of (1–40): 1, one can combine extractive separation and the preconcentration of gold and decrease the detection limit for gold to 0.031 mg/L (extraction-spectrophotometric determination) or 0.084 μg/L (direct determination in extracts by electrothermal atomic absorption spectrometry). Procedures were developed for the determination of trace amounts of gold, and their performance characteristics were calculated.
Databáze:	OpenAIRE
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