gas chromatographic
Gas chromatographic determination of styrene and other volatile organic compounds in polystyrene food packaging
... a gas chromatographic method to determine residual styrene and other VOCs including toluene, ethylbenzene, iso- propylbenzene and n-propylbenzene in polystyrene food packaging and to study their migration ...
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An assessment of the performance of semiconductor gas sensors as gas chromatographic detectors
... and no great difficulty was experienced in making up mixtures containing a few parts per million of hydrogen, with less than one part per million of carbon monoxide and less than ten parts per million of methane as ...
144
Capillary Gas Chromatographic Determination of Gamma Aminobutyric acid and Putrescine in Cerebrospinal Fluid using Trifluoroacetylacetone as Derivatizing Reagent
... capillary gas chromatographic procedure was established and validated for the determination of gamma aminobutyric acid (GABA) and putrescine (Put) using trifluoroacetylacetone (FAA) as derivatizing reagent ...
8
Gas chromatographic characterization of mycobacteria: analysis of fatty acids and trifluoroacetylated whole cell methanolysates
... Gas Chromatographic Characterization of Mycobacteria: Analysis of Fatty Acids and Trifluoroacetylated Whole-Cell Methanolysates LENNART LARSSON* AND PER-ANDERS MARDH Institute of Medical[r] ...
5
GAS CHROMATOGRAPHIC ANALYSIS OF THE FATTY ACID COMPOSITION OF THE PLASMA LIPIDS IN NORMAL AND DIABETIC SUBJECTS
... The fatty acid composition of cholesterol esters, triglycerides and phospholipids was studied by gas chromatographic analysis in seven diabetics with vascular complications and in seven [r] ...
12
A gas chromatographic instrument for measurement of hydrogen cyanide in the lower atmosphere
... Abstract. A gas-chromatographic (GC) instrument was de- veloped for measuring hydrogen cyanide (HCN) in the lower atmosphere. The main features of the instrument are (1) a cryogen-free cooler for sample ...
12
Gas Chromatographic Methods for Residual Solvents Analysis
... Gas chromatographic methods were developed for the analysis of 6 residual solvents with BP-624 (Intermediate polar) and EC-5 (non polar) columns. Both methods were showed good separation and resolution ...
8
Gas chromatographic–mass spectrometric determination of azithromycin in biological fluids
... Methods: A gas chromatographic – mass spectrometric (GC – MS) method is described for the determination of azithromycin monohydrate residue in biological fluids. This method allows detection of residual ...
6
GAS CHROMATOGRAPHIC STUDIES OF FENPROPATHRIN ON CHILLI
... (2012) Gas chromatographic method with electron-capture detector (gc-ecd) for simultaneous determination of fenpropathrin, λ- cyhalothrin, and deltamethrin residues in tomato and its applications to kinetic ...
7
SPECTROPHOTOMETRIC AND GAS CHROMATOGRAPHIC METHODS FOR DETECTION AND ASSAY OF MUSTARD GAS
... mustard gas, we have shown however that gas chromatography is a sensitive method of choice for detection and assay of mustard and its metabolite in the ...
6
Development of Gas Chromatographic method for Carcinogens
... Preparation of Standard solution : Weighed accurately about 1.0 g of Benzene GC standards into a 200 ml volumetric flask containing about 120 ml of Toluene . Mixed and diluted to volume with toluene & shake ...
7
Electron capture gas chromatographic detection of acethylmethylcarbinol produced by neisseria gonorrhoeae
... The conventional acetylmethylcarbinol test with the chemically defined medium and maltose as an engery source might be used to develop methods that would differentiate certain members of[r] ...
8
Development of Gas Chromatographic method for Antibacterials
... A simple, fast and accurate method has been developed for the determination of Ethanol and Acetone in Clarithromycin granules by Gas Chromatography. The analysis was carried out on Shimadzu GC-2010 Gas ...
10
Gas chromatographic analysis of mycolic acid cleavage products in mycobacteria
... When the samples were analyzed at high injector temperatures of 300 to 350°C, characteristic thermal cleavage products from mycolic acids, C220, C240, or C260 fatty acid methyl esters, w[r] ...
9
Static Head Space Gas Chromatographic Method For Quantitative Determination Of Residual Solvents In Canagliflozin API
... dimethylsilicone (10 % phenyl substituted), DB Wax (Polyethylene glycol(average MW 1,500) and DB-625 (6 % Cyanopropylphenyl-94 % dimethylpolysiloxane) and finally FFAB column (Polyethylene glycol TPA (Carbowax 20M ...
8
Simultaneous Gas Chromatographic Quantitation Of Ethanol And Methanol From Beer
... and methanol in beer, respectively. For ethanol, the alcohol hydrometer method and vibration type density meter method are used for general measurements, whereas an oxidation- based method and a gas chromatography ...
5
Gas chromatographic identification of trace amounts of organic compounds
... Measurement of the retention by Kovats indices where a compound's elution is compared with an homologous series of n-alkanes 2 has become a widely used technique for solute identificatio[r] ...
215
A Gas Chromatographic Micromethod for Respiration Studies on Insects
... In this manner the two cells of the thermal conductivity detector alternate as reference cells, and deflexion is negative in the case of the effluent from the Porapak Q column and positi[r] ...
6
Gas chromatographic determination of synthetic antioxidants in liquid frying oil samples
... Natural and synthetic antioxidants play a significant role in retarding the lipid oxidation reactions in food products. Prevention of lipid peroxidation has long become an important issue, since oils and fats, essential ...
7
Fatty acids-based quality index to differentiate worldwide commercial pistachio cultivars
... geographical origin based on gas chromatographic fatty acid fingerprint analysis using. 379[r] ...
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