Methane preconcentration in a microtrap using multiwalled carbon nanotubes as sorbents

Chutarat Saridara, Smruti Ragunath, Yong Pu, Somenath Mitra

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

The GC monitoring of green house gases is a challenging task because the concentration of organic species such as methane are relatively low (ppm to ppb) and their analysis requires some level of preconcentration. Since methane is highly volatile, it is not easily retained on conventional sorbents. In this paper we present multiwalled carbon nanotubes (MWNTs) as an effective sorbent for a microtrap designed for methane preconcentration. Its performance was compared to other commercially available carbon based sorbents, and it was found to be the most effective sorbent in terms of breakthrough volume and enthalpy of adsorption.

Original languageEnglish (US)
Pages (from-to)50-54
Number of pages5
JournalAnalytica Chimica Acta
Volume677
Issue number1
DOIs
StatePublished - Sep 1 2010

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

Keywords

  • Gas chromatography
  • Methane
  • Microtrap
  • Multiwalled carbon nanotubes
  • Preconcentration

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