Sorption Preconcentration of Volatile Organic Compounds in Air Analysis with a Change in the Configuration of the Sorption Layer in a Transition from Sorption to Thermal Desorption

Autor:	V. Spivakovskyi, O. V. Rodinkov, A.S. Bugaichenko, Viktor N. Postnov
Rok vydání:	2021
Předmět:	chemistry.chemical_compound Analyte Sorbent chemistry Extraction (chemistry) Analytical chemistry Thermal desorption Phenol Sorption Methanol Layer (electronics) Analytical Chemistry
Zdroj:	Journal of Analytical Chemistry. 76:707-713
ISSN:	1608-3199 1061-9348
Popis:	A scheme is proposed for the rapid dynamic sorption preconcentration of volatile organic compounds in the gas chromatographic analysis of air, based on a change in the configuration of the sorption layer in a transition from the sorption to the thermal desorption of analytes. The sorption extraction of analytes is carried out in a wide sorption column, which ensures high flow rates of the analyzed air at relatively small pressure drops created by typical electric aspirators. Then the sorbent is poured into a narrow column, which ensures rapid heating and the minimal blurring of analyte zones in the thermal desorption. The analytical capabilities of the proposed scheme, which makes it possible to reduce the duration of the stage of the sorption preconcentration of analytes by a factor of 3–4, is illustrated on an example of the sorption preconcentration of methanol and phenol using carboxene 1000 and carbopak C, respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a55cacc8b23a9387a1dc0d0993e8765a https://doi.org/10.1134/s1061934821060125 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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