Open AccessAir analysis using tenax collection with jet-separator enrichment and ion trap mass spectrometric analysis
Author(s) -
Gregory L. Kok,
M. E. Cisper,
P. H. Hemberger
Publication year - 1996
Publication title -
journal of the american society for mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.961
H-Index - 127
eISSN - 1879-1123
pISSN - 1044-0305
DOI - 10.1016/s1044-0305(96)00138-9
Subject(s) - tenax , chemistry , ion trap , separator (oil production) , mass spectrometry , detection limit , chromatography , toluene , analyte , analytical chemistry (journal) , trap (plumbing) , gas chromatography , environmental science , physics , organic chemistry , environmental engineering , thermodynamics
A dual adsorbent trap inlet system has been developed for an ion trap mass spectrometer (ITMS) to provide a rapid and sensitive system for screening of volatile organic compounds in air. The system employs three stages of concentration: preconcentration on an adsorbent Tenax trap, focusing in a cryogenic collection trap, and jet separator enrichment immediately prior to analysis by ITMS. Ten minute integrated samples are collected and analyzed immediately. The detection limit is 0. 9 parts-per-trillion by volume (pptrv) based on toluene as the analyte, and the reproducibility is 2% or better. Ambient air was analyzed for toluene on April 4, 1996 in Los Alamos, New Mexico, and concentrations ranged from 11-158 pptrv.