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Clinical Chemistry, Vol 19, 1006-1009, Copyright © 1973 by the American Association for Clinical Chemistry
1 Mass Spectrometry Unit and the Division of Clinical
Biochemistry of the Royal Victoria Hospital, Montreal 112, Quebec, Canada.
All the metabolically important C1 through C5 fatty
acids and lactic, pyruvic and
-hydroxybutyric acids
can be gas chromatographed surprisingly well on the
common 2-meter 3% methylphenylsilicone (e.g.,
"OV-17") column when a late-eluting silylating reagent such as trimethylsilylimidazole is used. In
these circumstances, the trimethylsilyl esters elute in
an interval that is free of the reagent and solvent interferences usually found when the more volatile
preparations are used for silylations. Use of the
method is demonstrated by its application to a serum
from a case of isovaleric acidemia and a urine from
a case of methylmalonic aciduria.
Submitted on May 3, 1973
Accepted on June 12, 1973
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