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Multiple short pass glass capillary gas chromatography

✍ Scribed by Jennings, W. ;Settlage, J. A. ;Miller, R. J.

Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
207 KB
Volume
2
Category
Article
ISSN
0935-6304

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✦ Synopsis

Abstract

A multiple repass system, utilizing an in‐line switching valve and suitable for use with small‐bore glass open tubular columns, is described. The advantages of the system, which include higher OPGV, large plate numbers and optimization of column β€œlength”, are discussed.

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THPI elutes as a single peak in just over 2 min; the response is sufficient for detection of 0.2 ng of THPI. Results from triplicate determinations at each spike level (0.05, 0.10, and 0.20 ppm THPI in milk) gave recoveries between 70.0 and 87.7 % (Table 1). Table 1 Recovery of THPI from spiked mil