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Some Useful Techniques and Accessories for Adaptation of the Gas Chromatograph to Soil Nitrogen Studies
Author(s) -
Smith Donald H.,
Clark Francis E.
Publication year - 1960
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/sssaj1960.03615995002400020014x
Subject(s) - nitrogen , gas chromatography , nitrogen gas , sampling (signal processing) , environmental science , manifold (fluid mechanics) , sample (material) , chromatography , chemistry , materials science , analytical chemistry (journal) , computer science , engineering , mechanical engineering , organic chemistry , filter (signal processing) , computer vision
Sample‐handling procedures and certain modifications or accessories for the gas chromatograph that have been found useful in examining soil atmospheres for gaseous forms of nitrogen are described. Also described are columns and techniques that permit the separation and measurement of molecular N, N 2 O, NO, NO 2 , NH 3 , O 2 and CO 2 . A special gas sampling valve, a manifold assembly, a multiple selector valve and a needle and manometer arrangement are diagrammed.