Off-Line Complexation/Supercritical Fluid Extraction and Gas Chromatography with Atomic Emission Detection for the Determination and Speciation of Organotin Compounds in Soils and Sediments

Autor:	Werner F. Beckert, Marcela Alcaraz, Viorica Lopez-Avila, Yan Liu
Rok vydání:	1994
Předmět:	Solvent chemistry.chemical_compound Chromatography Supercritical carbon dioxide Chemistry Atomic emission spectroscopy Supercritical fluid extraction Sample preparation Methanol Gas chromatography Soil contamination Analytical Chemistry Nuclear chemistry
Zdroj:	Analytical Chemistry. 66:3788-3796
ISSN:	1520-6882 0003-2700
DOI:	10.1021/ac00093a040
Popis:	As part of an ongoing evaluation of new sample preparation methods conducted by the U.S. Environmental Protection Agency (EPA) in Las Vegas, especially those that minimize waste solvent generation, we have developed and evaluated an off-line complexation/supercritical fluid extraction (SFE) method for 13 organotin compounds. Soil or sediment samples, amended with a complexing agent (diethylammonium diethyldithiocarhamate), were extracted with supercritical carbon dioxide modified with 5% methanol at 450 atm/60 o C, 20 min static, followed by 30 min dynamic
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::228371887c7625b9c3c57cca52100c1e https://doi.org/10.1021/ac00093a040 Zobrazit plný text záznamu