Volatility studies of metal chelates. II. Gas chromatographic properties of vanadium β-diketonates

1976 ◽  
Vol 29 (11) ◽  
pp. 2381 ◽  
Author(s):  
S Dilli ◽  
E Patsalides
Keyword(s):  
Liquid Chromatography ◽  
Stationary Phase ◽  
Oxidation States ◽  
Electron Capture Detection ◽  
Gas Liquid Chromatography ◽  
Ionization Detector ◽  
Flame Ionization ◽  
First Time ◽  
Chromatographic Elution ◽  
Polar Stationary Phase

The gas chromatographic elution behaviour is reported for a total of 16 vanadium(111) and oxovanadium(1V) fluorinated β-diketonates on a column consisting of a lightly loaded, non-polar stationary phase and diatomite support. The superiority of the vanadium(111) chelates is shown to include electron-capture detection. Detection limits of 14 chelates are given for the flame ionization detector. Separation of the two oxidation states of a metal by gas-liquid chromatography is demonstrated for the first time.

Determination of Phenothiazine and Several of its Derivatives by Gas-Liquid Chromatography

1966 ◽  
Vol 49 (4) ◽  
pp. 857-859
Author(s):  
C L Bramlett
Keyword(s):  
Liquid Chromatography ◽  
Internal Standard ◽  
Flame Ionization Detector ◽  
Gas Liquid Chromatography ◽  
Chromatographic Technique ◽  
Ionization Detector ◽  
Flame Ionization ◽  
Hydrogen Flame

Abstract Phenothiazine, promethazine.HCl, chlorpromazine. HCl, promazine.HCl, and levomepromazine. HCl were chromatographed satisfactorily on a column containing 5% Apiezon L coated on Anakrom ABS, 100/110 mesh, using a hydrogen-flame ionization detector. This gas chromatographic technique is rapid and more specific than existing official methods. The use of an internal standard to improve precision will be investigated.

Determination of Saccharin in Biological Materials by Gas-Liquid Chromatography

1971 ◽  
Vol 54 (5) ◽  
pp. 1140-1145
Author(s):  
Robert J Daun
Keyword(s):  
Liquid Chromatography ◽  
Thin Layer ◽  
Quantitative Determination ◽  
Methyl Iodide ◽  
Chromatographic Separation ◽  
Gas Liquid Chromatography ◽  
Ionization Detector ◽  
Animal Tissues ◽  
Flame Ionization

Abstract A method is described for the quantitative determination of saccharin in urine, feces, blood, and animal tissues. The saccharin is extracted with diethyl ether and methylated with methyl iodide to provide a volatile derivative for gas-liquid chromatography. Higher levels, as found in urine and feces, are determined with a flame ionization detector and lower levels, as in blood and tissues, are analyzed with an electron capture detector after a thin layer chromatographic separation.

scholarly journals Gas Chromatographic Analysis of Bioactive Compounds in the Seed Oil of Pentaclethra macrophylla (African Oil Bean Tree)

2021 ◽  
Author(s):  
Abdulrasaq Oyedeji ◽  
Luqman Azeez ◽  
Bibilomo Odeyemi
Keyword(s):  
Liquid Chromatography ◽  
Bioactive Compounds ◽  
Chromatographic Analysis ◽  
Seed Oil ◽  
Industrial Applications ◽  
Gas Liquid Chromatography ◽  
Bioactive Components ◽  
Ionization Detector ◽  
Flame Ionization ◽  
Β Carotene

This study characterized the bioactive components in the seed oil of <i>Pentaclethra macrophylla</i> to establish its usefulness in replacing costly convectional oils in industrial applications. Identification and quantification of the bioactive attributes were performed using gas-liquid chromatography with flame ionization detector (GC-FID) after extraction with n-Hexane. The main bioactive contents per 100 g in the oil were sitosterol (457.58 mg), campesterol (34.54 mg) and stigma-sterol (18.52 mg) been the most abundant sterols. The oil contained per 100 g β-carotene (15.89 mg), xanthophyll (10.32 mg), lutein (9.22 mg), and neo-xanthin (5.46 mg) as the highest carotenoids. The oil has ɣ- tocopherol (43.83 mg) and α-tocopherol (3.35 mg) also per 100 g. The main terpenes per 100 g in the oil were γ-elemene (17.28 mg), α-caryophyllene (13.06 mg), β-elemene (12.43 mg) and D-limonene (6.11 mg). Terpenoids including β-amyrin, α-amyrin and lupeol were found in trace amounts.

GLC of Sorbitol in Bakery Products, Wines, and Vinegars. Bv Harvey K. Hundley

1968 ◽  
Vol 51 (6) ◽  
pp. 1272-1274
Author(s):  
Harvey K Hundley
Keyword(s):  
Liquid Chromatography ◽  
Flame Ionization Detector ◽  
Gas Liquid Chromatography ◽  
Bakery Products ◽  
Ionization Detector ◽  
Sugar Alcohols ◽  
Flame Ionization

Abstract Sorbitol is extracted from bakery products with methanol. Aliquots of wines and vinegars are taken directly. Sugars and sugar alcohols are acetylated, then extracted with chloroform. The acetates are determined by gas-liquid chromatography with a flame ionization detector.

Determination of Vanillin and Ethyl Vanillin by Gas-Liquid Chromatography

1964 ◽  
Vol 47 (3) ◽  
pp. 561-562 ◽  
Author(s):  
Glenn E Marten ◽  
Frank J Feeny ◽  
Frank P Scaringelli
Keyword(s):  
Liquid Chromatography ◽  
Rapid Method ◽  
Internal Standard ◽  
Flame Ionization Detector ◽  
Gas Liquid Chromatography ◽  
Ionization Detector ◽  
Ethyl Vanillin ◽  
Flame Ionization ◽  
Other Substances

Abstract A rapid method has been developed in which gas-liquid chromatography is used to separate vanillin and ethyl vanillin in vanilla samples and determine them quantitatively. A flame ionization detector is used for the vanillin determination. 2-Phenoxyethanol is used as internal standard. The presence of any other substances is eliminated.

D-Mannose in human serum, measured as its aldononitrile acetate derivative.

1979 ◽  
Vol 25 (8) ◽  
pp. 1384-1387 ◽  
Author(s):  
T P Monson ◽  
K P Wilkinson
Keyword(s):  
Liquid Chromatography ◽  
Human Serum ◽  
Flame Ionization Detector ◽  
Candida Infection ◽  
Gas Liquid Chromatography ◽  
Ionization Detector ◽  
Flame Ionization ◽  
Invasive Candida Infection ◽  
Acetate Derivative

Abstract We report a procedure for determining D-mannose in serum. After removal of proteins and lipids, the carbohydrate-containing fraction is treated to form the aldononitrile acetate derivative and analyzed by gas--liquid chromatography with a flame-ionization detector. D-Mannose and D-glucose had retention times of 31 and 34 min, respectively. Day-to-day reproducibilities (CV) of between 2 and 12% for mannose were attainable for quantities of 100--900 ng. Related hexoses and derivatives do not interfere. The sensitivity was such that 10 mg/L could be detected in a 0.1-mL sample of serum. This method may be of use in diagnosing invasive Candida infection.

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