Gas chromatographic determination of chemical residues in food, using a rugged high-resolution mixed-bed column

1984 ◽  
Vol 56 (14) ◽  
pp. 2687-2692 ◽  
Author(s):  
James L. Daft
Keyword(s):  
High Resolution ◽  
Chromatographic Determination ◽  
Chemical Residues

Gas-Liquid Chromatographic Determination of Chlordene Epoxide in Catfish

1978 ◽  
Vol 61 (1) ◽  
pp. 01-04
Author(s):  
Gabriel D Castillo ◽  
Marshall T Jeffus ◽  
Charles T Kenner
Keyword(s):  
Mass Spectra ◽  
Chromatographic Determination ◽  
Gas Liquid Chromatography ◽  
Edible Portion ◽  
The Third ◽  
Chemical Residues ◽  
Fish Samples ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic

Abstract Chlordene epoxide was detected in the range of 0.04 to 0.27 ppm in the edible portion of 3 catfish samples during the analysis of 36 fish samples by electron capture gas-liquid chromatography (GLC) for pesticide and industrial chemical residues. Two of these catfish samples were from suppliers in Louisiana and the third was from a Texas supplier. Chlordene was also present; the amount of chlordene epoxide in the 3 samples averaged 46% of the amount of chlordene present. The epoxide was identified by comparison of the mass spectra and the CLC retention times of the samples with reference material prepared in this laboratory.

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.

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
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