Determination of the average desorption time of cyclohexane and benzene on a nonuniform surface by gas-solid partition chromatography

1967 ◽  
Vol 71 (12) ◽  
pp. 4031-4040 ◽  
Author(s):  
Claire Vidal-Madjar ◽  
Georges Guiochon
Keyword(s):  
Partition Chromatography ◽  
Nonuniform Surface ◽  
Desorption Time

Quantitative Determination of Sorbitol in Raisins and Dietetic Foods by Gas-Liquid Partition Chromatography

1973 ◽  
Vol 56 (5) ◽  
pp. 1267-1269
Author(s):  
Enrique Fernandez-Flores ◽  
Victor H Blomquist
Keyword(s):  
Organic Acids ◽  
Quantitative Determination ◽  
Rapid Method ◽  
Internal Standard ◽  
Trimethylsilyl Derivative ◽  
Partition Chromatography ◽  
Lead Salts

Abstract A rapid method for the determination of sorbitol in raisins and dietetic foods is described. Sorbitol is converted to a trimethylsilyl derivative after precipitation of interfering organic acids as lead salts and determined by GLC, using α-d-glucoheptose as an internal standard. Nine samples of dietetic foods were analyzed. The results compared satisfactorily with the declared sorbitol content for each product. The recovery of 0.5% sorbitol added to raisins was 93%.

Column Chromatographic Determination of Certifiable Colors in Lipsticks

1963 ◽  
Vol 46 (6) ◽  
pp. 1013-1017
Author(s):  
Rachel Sclar Silk
Keyword(s):  
Binary Mixture ◽  
Ammonium Hydroxide ◽  
Chromatographic Determination ◽  
Aqueous Alcohol ◽  
Partition Chromatography ◽  
Immobile Phase ◽  
Column Chromatographic

Abstract Column partition chromatography on Celite is used to separate the colors present in lipsticks. In the proposed procedure the immobile phase is aqueous alcohol plus ammonium hydroxide. A small portion of lipstick is ground with a portion of Celite containing the aqueous immobile phase and packed on top of a prepared colrate umn. Solvents of increasing polarity are used to elute individual colors except for one binary mixture. D&C Red No. 19 and D&C Red No. 36 and/or D&C Orange No. 17 elute together.

scholarly journals Centrifugal partition chromatography(CPC) as a useful method for determination of partition coefficients between octanol and water.

1987 ◽  
Vol 35 (12) ◽  
pp. 5010-5014 ◽  
Author(s):  
HIROSHI TERADA ◽  
YASUTAKA KOSUGE ◽  
NOBUYUKI NAKAYA ◽  
WATARU MURAYAMA ◽  
YOSHIAKI NUNOGAKI ◽  
...  
Keyword(s):  
Partition Coefficients ◽  
Partition Chromatography ◽  
Centrifugal Partition Chromatography

THE SEPARATION, DETERMINATION, AND CHARACTERIZATION OF 2-AMINO-2-DEOXY-D-GLUCOSE (D-GLUCOSAMINE) AND 2-AMINO-2-DEOXY-D-GALACTOSE (D-GALACTOSAMINE) IN BIOLOGICAL MATERIALS BY GAS–LIQUID PARTITION CHROMATOGRAPHY

1964 ◽  
Vol 42 (4) ◽  
pp. 451-460 ◽  
Author(s):  
M. B. Perry
Keyword(s):  
Hyaluronic Acid ◽  
Chondroitin Sulphate ◽  
Chromatographic Determination ◽  
Partition Chromatography ◽  
Quantitative Analyses ◽  
Optical Rotations ◽  
Trimethylsilyl Derivatives ◽  
Quantitative Procedure

A method for the separation, determination, and characterization of 2-amino-2-deoxy-D-glucose (D-glucosamine) and 2-amino-2-deoxy-D-galactose (D-galactosamine) is presented. Treatment of 2-acetamido-2-deoxy-α-D-glucose and 2-acetamido-2-deoxy-α-D-galactose in pyridine solution with trimethylchlorosilane and hexamethyldisilazane results in a rapid conversion of the glycoses to their respective trimethylsilyl 3,4,6-tri-O-trimethylsilyl-2-acetamido-2-deoxy-α-D-glycosides which are sufficiently stable and volatile to allow their separation and quantitative analysis to be made by gas–liquid partition chromatography. The two trimethylsilyl derivatives, collected by preparative gas–liquid partition chromatography, were crystalline compounds which had sharp melting points and characteristic infrared spectra and specific optical rotations. Quantitative analyses of mixtures of 2-amino-2-deoxy-D-glucose hydrochloride and 2-amino-2-deoxy-D-galactose hydrochloride were made by gas chromatographic analysis of their trimethylsilyl derivatives formed after prior conversion to their N-acetyl derivatives.The analytical procedure was applied to the characterization of 2-amino-2-deoxy-D-glucose in hyaluronic acid and 2-amino-2-deoxy-D-galactose in chondroitin sulphate. The quantitative procedure was also successfully applied to the analysis of mixtures of hyaluronic acid and chrondroitin sulphate by the gas–liquid partition chromatographic determination of the 2-amino-2-deoxy-D-glucose and 2-amino-2-deoxy-D-galactose in the hydrolyzates prepared from synthetic mixtures of the two mucopolysaccharides.

[9] Determination of amino acids as DNP derivatives by automatic partition chromatography

1967 ◽  
pp. 94-108 ◽  
Author(s):  
Leo Kesner ◽  
Edward Muntwyler ◽  
Grace E. Griffin ◽  
Patricia Quaranta
Keyword(s):  
Amino Acids ◽  
Partition Chromatography
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