ISSN:
1573-5036
Keywords:
Autoanalysis
;
Denitrification
;
Gas chromatography N2
;
fixation
;
Respiration
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary We have built an autosampler system that delivers the contents of pressurized gas collection vials to the injection port of a gas chromatograph. The three-part system consists of a shuttle base upon which vials move sequentially past a static sampling point, a sampling needle that is driven through vial septa by an air-driven piston, and an air-actuated sample valve that alternately places a sample loop in line with either a sample delivery line from the sample needle or a carrier stream leading to the gas chromatograph. We have used the system to analyze several thousand gas samples taken from soil cores assayed for denitrification activites, and have found the system reliable and capable of producing highly repeatable results.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02184457
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