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Abstract

 

This article in SSSAJ

  1. Vol. 46 No. 6, p. 1336-1338
     
    Received: Apr 20, 1982
    Accepted: June 24, 1982


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doi:10.2136/sssaj1982.03615995004600060043x

Storage of Nitrous Oxide on Molecular Sieves1

  1. J. M. Duxbury and
  2. S. Voghel2

Abstract

Abstract

A procedure was developed for storing the N2O in 50-mL air samples on activated molecular-sieve type 5A in 60-mL serum bottles. The procedure was equally effective for N2O concentrations of 1 and 10 µL · L−1 and storage times up to 6 weeks. Blank values for sieves stored 3 to 5 months after activation ranged from about 0.04 ± 0.002 to 0.05 ± 0.005 µL · L−1. Allowing freshly activated sieves to cool in air before capping the bottles increased blank values and variability to unacceptable levels. Nitrous oxide fluxes from soil > 10 g N · ha−1 · d−1 could be reliably determined when the storage procedure was used in conjunction with a chamber method for N2O flux measurement.

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