High resolution gas chromatographic determination of diterpenic alcohols and sterols in coffee lipids

1995 ◽  
Vol 41 (5-6) ◽  
pp. 29-33 ◽  
Author(s):  
G. Lercker ◽  
N. Frega ◽  
F. Bocci ◽  
M. T. Rodriguez-Estrada
Keyword(s):  
High Resolution ◽  
Chromatographic Determination ◽  
Coffee Lipids

High resolution gas chromatographic determination of diterpenic alcohols and sterols in coffee lipids

1995 ◽  
Vol 41 (1-2) ◽  
pp. 29-33 ◽  
Author(s):  
G. Lercker ◽  
N. Frega ◽  
F. Bocci ◽  
M. T. Rodriguez-Estrada
Keyword(s):  
High Resolution ◽  
Chromatographic Determination ◽  
Coffee Lipids

Liquid Chromatographic Determination of Dicofol in Kelthane Formulations: Collaborative Study

1986 ◽  
Vol 69 (4) ◽  
pp. 714-720
Author(s):  
Alan M Rothman ◽  
◽  
A Ausari ◽  
O O Bennett ◽  
E J Blusiewicz ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Standard Deviation ◽  
High Resolution ◽  
Mobile Phase ◽  
Collaborative Study ◽  
Chromatographic Determination ◽  
In Series ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic

Abstract A liquid chromatographic (LC) method was used to determine p,p'- and o,p'-isomers of dicofol AI (active ingredient) in Kelthane® EC and MF formulations. Samples are dissolved in methanol and AI components and impurities are separated on a high resolution C8 column in series with a short C18 guard column, with a methanol-water-acetic acid mobile phase. Cleaned samples are directly injected into the LC system and are monitored at 254 nm. Twelve collaborators submitted results on 5 samples. Using 95% confidence criteria, the average total standard deviation of the total AI across all samples was 2.82%. The method has been adopted official first action.

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