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Analysis of organic pollutants in air by thermal desorption/gas chromatography/mass spectrometry using a home‐made cryofocusing device
Author(s) -
Pucci Sergio,
Raffaeli Andrea,
Lazzaroni Raffaello,
Salvadori Piero
Publication year - 1992
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290061002
Subject(s) - chemistry , thermal desorption , desorption , mass spectrometry , volumetric flow rate , chromatography , adsorption , analytical chemistry (journal) , gas chromatography , gas chromatography–mass spectrometry , pollutant , detection limit , environmental chemistry , organic chemistry , physics , quantum mechanics
This paper describes a simple and cheap home‐made cryofocusing device useful in thermal desorption/gas chromatography/mass spectrometry (GC/MS) to achive the refocusing of the substances desorbed, in order to us use different flow rates during the desorption time (higher flow rate) and the GC/MC analysis (lower flow rate). Some preliminary results of the qualitative and quantitave determinatino of organic pollutants present in air are also presented. The combinatin used, comprising dynamic adsorption/thermal desorption/cryofocusing/GC/MS, allowed us to reach detection limits in the upper ng/m 3 (that is, the upper part‐per‐trillion range) per single component.