Oilseed residues. Determination of total residual hexane

1995 ◽  
Keyword(s):  
Residual Hexane ◽  
Residues Determination

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.

Chemical Residues, Determination of Perchloroethylene in Strawberries

1954 ◽  
Vol 2 (4) ◽  
pp. 202-203 ◽  
Author(s):  
D. A. Mapes ◽  
S. A. Shrader
Keyword(s):  
Chemical Residues ◽  
Residues Determination

Feed Additive Residues, Determination of Trace Amounts of Nitrofurazone in Milk

1964 ◽  
Vol 12 (2) ◽  
pp. 121-123 ◽  
Author(s):  
L. R. Stone
Keyword(s):  
Feed Additive ◽  
Residues Determination

A rapid procedure for the determination of residual hexane in oilseed meals and flours

1972 ◽  
Vol 49 (2) ◽  
pp. 129-131 ◽  
Author(s):  
Sara P. Fore ◽  
H. P. Dupuy
Keyword(s):  
Rapid Procedure ◽  
Residual Hexane

Herbicide Residues, Determination of 3-Amino-1,2,4,-triazole Residues in Sugarcane

1966 ◽  
Vol 14 (1) ◽  
pp. 90-94 ◽  
Author(s):  
H. W. Hilton ◽  
G. K. Uyehara
Keyword(s):  
Herbicide Residues ◽  
Residues Determination
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