Characteristics of the Phosphate Sensitive Sodium Sulfate Modified Hydrogen Flame Ionization Detector

1967 ◽  
pp. 1-16
Author(s):  
Royce E. Johnson
Keyword(s):  
Sodium Sulfate ◽  
Flame Ionization Detector ◽  
Ionization Detector ◽  
Flame Ionization ◽  
Hydrogen Flame

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.

scholarly journals The Effect of the Linear Velocity on the Detector Response and Effective Carbon Number: The Role of the Experimental Conditions in the Quantitative Analysis

2020 ◽  
Author(s):  
Judit Mátyási ◽  
Dorottya Zverger ◽  
Blanka Gaál ◽  
József Balla
Keyword(s):  
Carbon Number ◽  
Linear Velocity ◽  
Flame Ionization Detector ◽  
Detector Response ◽  
Ionization Detector ◽  
Experimental Conditions ◽  
Flame Ionization ◽  
Hydrogen Flame ◽  
Signal Production ◽  
Chromatographic Parameters

Since its introduction in 1957 the Flame Ionization Detector (FID) is the most widely used Gas Chromatographic (GC) detector. Nowadays there is no Gas Chromatographic laboratory without apparatus containing a Flame Ionization Detector. However, the operation mechanism of the hydrogen flame and signal production is still not completely obvious. The FID response for hydrocarbons is proportional to the carbon content of the compound, while substances that contain heteroatoms yield smaller responses. In the Gas Chromatographic practice, a special relative response factor called Effective Carbon Number (ECN) is used for the expression of the response for molecules containing heteroatom. In the literature there are signal modifying constants published by different authors, which are typical of the carbon atoms and heteroatoms in the different chemical bonds. Although these constants express the nature of the modification (increase or decrease) the exact modifying value always depends on the chromatographic parameters and the molecular structure. If we want to apply the ECN method for our calculations these constants should be determined for our specific Gas Chromatographic system. In our earlier study we investigated the effect of the temperature of the injector, column and detector, the mode of the injection and the concentration level of the substance. The aim of this paper is to investigate the effect of the linear velocity on the response of the Flame Ionization Detector as a mass flow rate sensitive detector in the case of capillary column.

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