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Issue 11, 2001
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Single-sided membrane introduction mass spectrometry for on-line determination of semi-volatile organic compounds in air

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Abstract

Construction, optimization, and testing of a novel single-sided configuration for a semi-permeable [poly(dimethylsiloxane); PDMS] membrane introduction system for mass spectrometry is described. On-line detection of semi-volatile organic compounds of environmental interest is shown, including lindane (a pesticide), hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) (an explosive), butylated hydroxytoluene (BHT) (an antioxidant), 1,2-dichlorobenzene, dimethylmethyl phosphonate (DMMP) (a chemical warfare agent simulant) and naphthalene. The technique has limits of detection in the sub-ppb range, with rise times of 4 to 7 s and fall times of 12 to 36 s and a response that is linear over 4 orders of magnitude (from 0.1 ppb to 1000 ppb for DMMP). The cycle time, from crude air sampling to acquisition of results, is approximately 1 min. No sample preparation is necessary.

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Article information


Submitted
02 Jul 2001
Accepted
22 Aug 2001
First published
23 Oct 2001

Analyst, 2001,126, 1980-1984
Article type
Paper

Single-sided membrane introduction mass spectrometry for on-line determination of semi-volatile organic compounds in air

L. S. Riter, Z. Takáts and R. G. Cooks, Analyst, 2001, 126, 1980
DOI: 10.1039/B105857F

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