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This article in SSSAJ

  1. Vol. 52 No. 3, p. 678-681
     
    Received: Sept 1, 1987
    Published: May, 1988


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doi:10.2136/sssaj1988.03615995005200030015x

Determination of Gaseous Selenium-75 Evolved from Soil

  1. U. Karlson and
  2. W. T. Frankenberger 
  1. Department of Soil and Environmental Sciences, Univ. of California, Riverside, CA 92521

Abstract

Abstract

A rapid, cost-effective and inexpensive method was developed to determine volatile microbial metabolites of Se. Labeled inorganic Se was applied to soil, and the gaseous products were captured in a specially designed activated C trap. After removal for sampling, the C trap was counted directly for 75Se, without further sample preparation. Maximum sampling intervals were 101 to 263 h, depending on Se emission rates. The limit of quantification was 8.2 ng Se using a specific activity of 5 Ci kg−1 Se. The relative standard deviation ranged from 1.3 to 4.1%. Recovery for the added label was 97.5%. The technique is well suited for large-scale environmental kinetic investigations.

Contribution from the Dep. of Soil and Environmental Sciences, Univ. of California, Riverside, CA.

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