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Use of Pressurized Vials for Loading Sample Loops in Soil Gas Analyses
Author(s) -
Stealey T. E.,
Hern J. L.,
Harner E. J.
Publication year - 1984
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/sssaj1984.03615995004800050050x
Subject(s) - vial , syringe , volume (thermodynamics) , chromatography , gas chromatography , materials science , sample (material) , analytical chemistry (journal) , environmental science , chemistry , mechanical engineering , engineering , physics , quantum mechanics
A technique was developed using small (3 mL) evacuated glass vials for soil gas sample storage and loading of gas chromatographic sample loops. Vial volume was reduced 2 mL by inclusion of glass beads. The vials were pressurized with 3.2 mL sample and used directly for loop loading via a specially contructed vial guide. Time course determinations on stored samples of C 2 H 2 and Kr indicated leak losses of 0 to 0.2% d −1 when compared to the ideal technique of exhaustive loop purging from a standard gas tank. The low cost, reusability, and known vacuity of the vials, as well as the elimination of a transfer stop from storage container to a syringe prior to injection into a gas chromatograph, should favor their use in agronomic field and laboratory studies where numerous samples of the smallest possible volume must be taken.