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Anal Chem


Title:Using thermogravimetry for weight loss monitoring of permeation tubes used for generation of trace concentration gas standards
Author(s):Maria PC; Gal JF; Balza M; Pere-Trepat E; Tumbiolo S; Couret JM;
Address:"Chimie des Materiaux Organiques et Metalliques, Faculte des Sciences, Universite de Nice-Sophia Antipolis, France"
Journal Title:Anal Chem
Year:2002
Volume:74
Issue:1
Page Number:305 - 307
DOI: 10.1021/ac0108921
ISSN/ISBN:0003-2700 (Print) 0003-2700 (Linking)
Abstract:"Permeation tubes are convenient analyte sources for generating standard gas mixtures (containing, in particular, volatile organic compounds) used in the calibration of analytical instruments. For small permeation rates, corresponding to trace levels of analytes, the calibration of permeation tubes is time-consuming. The use of thermogravimetry as a means to measure rapidly the weight loss at constant temperature was investigated. An attempt to apply this technique to calibrating a permeation tube filled with benzene is described. In the 20 ng/min range of permeation rate, day-to-day variations of <5% were observed. The continuous weight loss monitoring of permeation tubes by thermogravimetry allows their rapid characterization"
Keywords:Air Pollutants/*analysis/standards Environmental Monitoring/*instrumentation/standards Gases/standards Organic Chemicals/analysis Reference Standards;
Notes:"MedlineMaria, Pierre-Charles Gal, Jean-Francois Balza, Marta Pere-Trepat, Emma Tumbiolo, Simonetta Couret, Jean-Marie eng Research Support, Non-U.S. Gov't 2002/01/25 Anal Chem. 2002 Jan 1; 74(1):305-7. doi: 10.1021/ac0108921"

 
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