Quantitative determination of morphine in biological samples by gas-liquid chromatography and electron-capture detection

1975 ◽  
Vol 27 (3) ◽  
pp. 172-176 ◽  
Author(s):  
BENGT DAHLSTRÖM ◽  
LENNART PAALZOW
Keyword(s):  
Liquid Chromatography ◽  
Quantitative Determination ◽  
Electron Capture ◽  
Biological Samples ◽  
Electron Capture Detection ◽  
Gas Liquid Chromatography

Quantitative Determination of Chlorobutanol in Milk by Gas-Liquid Chromatography

1972 ◽  
Vol 55 (5) ◽  
pp. 948-950
Author(s):  
John E Wiskerchen ◽  
Joseph Weishaar
Keyword(s):  
Liquid Chromatography ◽  
Quantitative Determination ◽  
Electron Capture ◽  
Steam Distillation ◽  
Collaborative Study ◽  
Electron Capture Detection ◽  
Gas Liquid Chromatography

Abstract A method is described for the quantitative determination of chlorobutanol in milk by gas-liquid chromatography. The cleanup includes isolation of chlorobutanol from milk by steam distillation and extraction with ether. The chlorobutanol is quantitatively determined on a column of 5% Igepal 880 on Gas-Chrom Q with electron capture detection. Recoveries were 87–101% for milk fortified at 0.01–10 ppm levels. Collaborative study is recommended after an intralaboratory study is completed.

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