Purge-and-membrane with ECD: A new screening method for chlorinated aliphatic hydrocarbons

Risto Kostiainen, Tapio Kotiaho, Raimo Ketola, Vesa Virkki

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)


A new analytical technique; purge-and-membrane-electron capture detection (ECD), is described and applied to the screening of halogenated aliphatic hydrocarbons. A water sample is first purged by helium and the purged compounds are collected from the gas phase through a silicone membrane to the analytical system. Purge-and-membrane-ECD provides very fast, selective and sensitive screening method for halogenated aliphatic hydrocarbons. The method was compared with conventional direct membrane extraction. Results obtained show that the limits of detection (0.01–2 μg L−1) were comparable with both methods. However, significant shorter response times were measured with purge-and-trap than with direct membrane extraction.
Original languageEnglish
Pages (from-to)34-36
Issue number1-2
Publication statusPublished - 1995
MoE publication typeA1 Journal article-refereed


  • volatile organic compounds
  • Membrane extraction
  • Electron capture detection


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