Liquid Chromatography in Pharmaceutical Analysis IX: Determination of Muscle Relaxant-Analgesic Mixtures Using Normal Phase Chromatography

1978 ◽  
Vol 67 (5) ◽  
pp. 675-679 ◽  
Author(s):  
I.L. Honigberg ◽  
J.T. Stewart ◽  
M. Smith
Keyword(s):  
Liquid Chromatography ◽  
Muscle Relaxant ◽  
Pharmaceutical Analysis ◽  
Normal Phase ◽  
Normal Phase Chromatography

Determination of void volume in normal phase liquid chromatography

2014 ◽  
Vol 1324 ◽  
pp. 63-70 ◽  
Author(s):  
Ping Jiang ◽  
Di Wu ◽  
Charles A. Lucy
Keyword(s):  
Liquid Chromatography ◽  
Normal Phase ◽  
Void Volume ◽  
Phase Liquid

Extraction, Cleanup, and Quantitative Determination of Aflatoxins in Corn

1980 ◽  
Vol 63 (3) ◽  
pp. 631-633 ◽  
Author(s):  
James E Thean ◽  
David R Lorenz ◽  
David M Wilson ◽  
Kathleen Rodgers ◽  
Richard C Gueldner
Keyword(s):  
High Pressure ◽  
Liquid Chromatography ◽  
Quantitative Determination ◽  
Ammonium Sulfate ◽  
Silica Gel ◽  
Normal Phase ◽  
Aqueous Methanol ◽  
Normal Phase Hplc ◽  
Water Saturated

Abstract A method is proposed for extraction and cleanup of corn samples for the quantitation of 4 aflatoxins by high pressure liquid chromatography (HPLC). After aqueous methanol extraction, ammonium sulfate treatment, and partition of aflatoxins into chloroform, sample extracts are partially purified on Sep-Pak cartridges or small columns packed with HPLC grade silica; cleanup requires only 13 mL solvent/sample. Aflatoxins B1, B2, G1, and G2 in the purified extract are resolved in ca 10 min by normal phase HPLC on a microparticulate (5 μm) silica gel column with a 50% water-saturated chloroform-cyclohexaneacetonitrile- ethanol solvent, and are measured by ultraviolet fluorescence in a silica gel-packed flowcell. Recoveries of added aflatoxins B1, B2, G1, and G2 were 84–118 % at levels of 1.5–125 μg/kg

Determination of aprophen in biological samples by normal-phase high-performance liquid chromatography

1981 ◽  
Vol 219 (1) ◽  
pp. 171-174 ◽  
Author(s):  
William S. Eck ◽  
R.Richard Gray ◽  
Theodore A. Gegoux ◽  
Gregory M. Schoo ◽  
M.Patricia Strickler
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Biological Samples ◽  
High Performance ◽  
Normal Phase
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