Membrane mass spectrometry for the direct trace analysis of volatile organic compounds in air and water

Autor:	Christie G. Enke, Mark A. LaPack, James C. Tou
Rok vydání:	1990
Předmět:	Matrix (chemical analysis) Membrane Hollow fiber membrane Chemistry technology industry and agriculture Analytical chemistry Membrane-introduction mass spectrometry Fiber Semipermeable membrane Permeation Mass spectrometry Analytical Chemistry
Zdroj:	Analytical Chemistry. 62:1265-1271
ISSN:	1520-6882 0003-2700
DOI:	10.1021/ac00212a013
Popis:	Very simple membrane inlets can be constructed that are selectively permeable to organic molecules while discriminating against the air or water sample matrix. The membrane thickness directly affects the flow through the membrane such that thinner membranes provide higher throughputs and shorter response times. Higher temperatures result in shortened response times and reduced selectivity of the permeation process. Comparisons of two hollow fiber membrane inlet geometries show that permeation rates are improved in the configuration where the sample flows through the inside of the hollow fiber and the permeating gases are analyzed on the outside, as opposed to the reversed configuration.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4a0e4477bc23556567f0e74ad875f23a https://doi.org/10.1021/ac00212a013 Zobrazit plný text záznamu