Gas-chromatographic determination of trace S-[2-(N,N)-diethylamino)ethyl]methylphosphonothioic acid in water

Autor:	I. N. Stan’kov, V. B. Sitnikov, I. D. Derevyagina, S. N. Mylova, S. V. Sadovnikov, V. B. Condrat’ev
Rok vydání:	2008
Předmět:	chemistry.chemical_compound Chromatography Chemistry Diazomethane Extraction (chemistry) Derivative Methylphosphonic acid Analytical Chemistry
Zdroj:	Journal of Analytical Chemistry. 63:668-673
ISSN:	1608-3199 1061-9348
Popis:	A procedure is proposed for the gas-chromatographic determination of S-[2-(N,N)-diethylamino) ethyl]methylphosphonothioic acid (monothiol) in water at a level of 5 × 10−5%. The procedure is based on the extraction of monothiol from water by liquid-liquid extraction, treatment of the extract with isopropanol in the presence of AgNO3 and with diazomethane to obtain O-isopropyl-O-methyl methylphosphonate, and the chromatographic detection of the derivative obtained with a flame-photometric detector. The relative error of determining monothiol in water does not exceed 35%; the time of analysis is 60 min.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ae0c5c20bf1326b83b5aef642770862e https://doi.org/10.1134/s1061934808070113 Zobrazit plný text záznamu Plný text ve formátu PDF