Development of a membrane inlet mass spectrometric method for analysis of air samples

Raimo Ketola (Corresponding Author), Marja Ojala, Harri Sorsa, Tapio Kotiaho, Risto Kostiainen

Research output: Contribution to journalArticleScientificpeer-review

49 Citations (Scopus)


A sheet membrane inlet mass spectrometric (MIMS) method for the on-line analysis of volatile organic compounds (VOCs) in air at low μg/m3 levels was developed. The effects of the thickness of the membrane, the temperature of the membrane inlet and the flow rate of the sample on the responses and response times of some selected VOCs were studied in detail. Under optimised conditions the detection limits for the VOCs studied were 0.5–4 g m−3 and linear dynamic ranges were about four orders of magnitude. Response times of only a few seconds were recorded with a thin (25 μm) membrane. The developed MIMS method was applied to an analysis of air samples from an exhaust of a paintshop, where volatile organic solvents were used.

Original languageEnglish
Pages (from-to)359-365
JournalAnalytica Chimica Acta
Issue number1-3
Publication statusPublished - 1997
MoE publication typeA1 Journal article-refereed


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