Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.

Issue 4, 2000
Previous Article Next Article

Performance evaluation of a sorbent tube sampling method using short path thermal desorption for volatile organic compounds

Author affiliations


Air sampling, using sorbents, thermal desorption and gas chromatography, is a versatile method for identifying and quantifying trace levels of volatile organic compounds (VOCs). Thermal desorption can provide high sensitivity, appropropriate choices of sorbents and method parameters can accommodate a wide range of compounds and high humidity, and automated short-path systems can minimize artifacts, losses and carry-over effects. This study evaluates the performance of a short-path thermal desorption method for 77 VOCs using laboratory and field tests and a dual sorbent system (Tenax GR, Carbosieve SIII). Laboratory tests showed that the method requirements for ambient air sampling were easily achieved for most compounds, e.g., using the average and standard deviation across target compounds, blank emissions were ≤0.3 ng per sorbent tube for all target compounds except benzene, toluene and phenol; the method detection limit was 0.05 ± 0.08 ppb, reproducibility was 12 ± 6%, linearity, as the relative standard deviation of relative response factors, was 16 ± 9%, desorption efficiency was 99 ± 28%, samples stored for 1–6 weeks had recoveries of 87 ± 9%, and high humidity samples had recoveries of 102 ± 12%. Due to sorbent, column and detector characteristics, performance was somewhat poorer for phenol groups, ketones, and nitrogen containing compounds. The laboratory results were confirmed in an analysis of replicate samples collected in two field studies that sampled ambient air along roadways and indoor air in a large office building. Replicates collected under field conditions demonstrated good agreement except for very low concentrations or large (>4 l volume) samples of high humidity air. Overall, the method provides excellent performance and satisfactory throughput for many applications.

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 27 Apr 2000, accepted on 07 Jun 2000 and first published on 19 Jul 2000

Article type: Paper
DOI: 10.1039/B003385P
Citation: J. Environ. Monit., 2000,2, 313-324
  •   Request permissions

    Performance evaluation of a sorbent tube sampling method using short path thermal desorption for volatile organic compounds

    C. Peng and S. Batterman, J. Environ. Monit., 2000, 2, 313
    DOI: 10.1039/B003385P

Search articles by author