Gas chromatographic determination of chloral hydrate, trichloroethanol and trichloroacetic acid in blood and in urine employing head-space analysis

1974 ◽  
Vol 88 (1) ◽  
pp. 55-63 ◽  
Author(s):  
D.D. Breimer ◽  
H.C.J. Ketelaars ◽  
J.M. Van Rossum
Keyword(s):  
Trichloroacetic Acid ◽  
Chloral Hydrate ◽  
Chromatographic Determination ◽  
Space Analysis ◽  
Head Space ◽  
Head Space Analysis

Gas chromatographic determination of residual ethylene oxide by head space analysis

1973 ◽  
Vol 45 (14) ◽  
pp. 2327-2330 ◽  
Author(s):  
S. J. Romano ◽  
J. A. Renner ◽  
P. M. Leitner
Keyword(s):  
Ethylene Oxide ◽  
Chromatographic Determination ◽  
Space Analysis ◽  
Head Space ◽  
Head Space Analysis

Determination of Very Volatile Halogenated Organic Compounds in Water by Means of Direct Head-Space Analysis

1978 ◽  
Vol 11 (5) ◽  
pp. 437-448 ◽  
Author(s):  
G. J. Piet ◽  
P. Slingerland ◽  
F. E. De Grunt ◽  
M. P. M. Heuvel ◽  
B. C. J. Zoeteman
Keyword(s):  
Organic Compounds ◽  
Halogenated Organic Compounds ◽  
Space Analysis ◽  
Head Space ◽  
Direct Head ◽  
Volatile Halogenated Organic Compounds ◽  
Head Space Analysis

Gas Chromatographic Determination of Residual Hexane in Modified Hop Extract

1972 ◽  
Vol 55 (6) ◽  
pp. 1226-1227
Author(s):  
Mark A Litchman ◽  
Lewis A Turano ◽  
Ronald P Upton
Keyword(s):  
Liquid Chromatography ◽  
Quantitative Determination ◽  
Chromatographic Determination ◽  
Methanol Solution ◽  
Chromatographic Column ◽  
Gas Liquid Chromatography ◽  
Porapak Q ◽  
Residual Hexane ◽  
Head Space

Abstract A method is described for the quantitative determination of hexane in modified hop extract by head-space gas-liquid chromatography. A sample of extract is weighed into a serum vial and water-methanol solution is added. The vial is sealed tightly and heated 1 hr in a 70°C bath. A sample of the head-space gas over the solution is injected onto a Porapak Q gas chromatographic column for determination. Recovery of 2–29 ppm hexane added to potassium isohumulone was 95.5–114.8%. The method may be applicable to other hop extracts.

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