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Determination of Gaseous Selenium‐75 Evolved from Soil
Author(s) -
Karlson U.,
Frankenberger W. T.
Publication year - 1988
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1988.03615995005200030015x
Subject(s) - selenium , sampling (signal processing) , trap (plumbing) , detection limit , relative standard deviation , chemistry , environmental science , environmental chemistry , soil test , chromatography , soil water , soil science , environmental engineering , organic chemistry , filter (signal processing) , computer science , computer vision
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 75 Se, 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.