About Us | Help Videos | Contact Us | Subscriptions

Journal of Environmental Quality Abstract -

Rapid Analysis of Climate Gases by Wide Bore Capillary Gas Chromatography


This article in JEQ

  1. Vol. 21 No. 3, p. 493-496
    Received: Aug 19, 1991

    * Corresponding author(s):
Request Permissions

  1. Bishal K. Sitaula,
  2. Jiafa Luo and
  3. Lars R. Bakken *
  1. Dep. of Soil Sciences, Agric. Univ. of Norway, 1432 Aas- NLH, Norway;
    Dep. of Soil Sciences, Massey Univ., Palmerston North, New Zealand;
    Dep. of Biotechnological Sciences, Agric. Univ. of Norway, 1432 Aas- NLH, Norway.



A gas chromatographic method that gives sensitive and rapid (3.3 min) measurement of the three greenhouse gases CO2, CH4, N2O is described. A wide bore capillary column operated at optimal conditions gave sufficient separation to allow a switch of the column flow between two detector systems (TCD and FID in series, and ECD) during the chromatogram; thus, all three gases could be analyzed with a single sample injection. Application of a peristaltic pump allowed gas samples to be transfered directly from gas sampling vials, through a drying agent [Mg (Cl04)2] and into the injection loop (0.5 mL) Back flushing of the injection system (pump and drying agent) with He between each injection ensured minimal carry over between samples (<0.6%). Experiences with storage of gas samples in vials with butyl rubber septa are described.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © .