Hydrogen flame ionization

DOBBS, R. A., WISE, R. H. and DEAN, R. B. Measurement of Organic Carbon in Water Using the Hydrogen-Flame Ionization Detector. Anal. Chem., 39, 1255 (1967). 

Lebish, P., Finkle, B.S., and Brackett, J.W., Jr., Determination of amphetamine, methamphetamine, and related amines in blood and urine by gas chromatography by hydrogen-flame ionization detector, Clin. Chem., 16, 195-200, 1970. 

Gas chromatograms were obtained on a twin Hewlett-Packard model 5750 Research Chromatograph. The dual columns were 6-m lengths of copper tubing 3 mm in diameter, packed with 3% OV-1 on Chromosorb G-HP (methylsilicone on calcined diatomaceous earth). Samples were introduced as about 10% solutions in carbon bisulfide. Detection was by hydrogen-flame ionization, the non-sample contribution from the idle column being subtracted from the total contribution of the active column to provide a sample chromatograph corrected for extraneous ionization. 

Hill, R. D., and H. Gesser An Investigation into the Quantitative Gas Chromatographic Analysis of Metal Chelates Using a Hydrogen-Flame Ionization Detector. J. Chromatog. 1, Heft 10, S. 11 (1963). 

Gas Chromatography-Mass Spectrometry. A Hewlett-Packard Model 5890 Gas Chromatograph equipped with a hydrogen flame ionization detector was used in the study. A bonded phase DB-5 fused silica capillary column (30 m x 0.25 imi, 1 um film thickness) was used in all analyses (J W Scientific, Rancho Cordoba, CA). Operating parameters were as follows ... 

A Perkin-Elmer model 900 gas chromatograph with a hydrogen flame ionization detector is used in this work. The recorder is a Perkin-Elmer model 56 adjusted to produce a chart at 1 centimeter per minute for ease of interpretation and evaluation. Variations in attenuation are frequently necessary from specimen to specimen. 

Procedure (See Chromatography, Appendix IIA.) Use a suitable gas chromatograph equipped with a hydrogen flame-ionization detector, and a silanized 1-m x 4-mm (id) glass column, or equivalent, packed with 90- to 100-mesh Anakrom ABS, or equivalent, containing 7.5% Carbowax 20M and 2% potassium hydroxide, or equivalent. Maintain the column at 190° (isothermal). Set the injection point temperature to 200° and the detector temperature to 250°. Use nitrogen as the carrier gas, with a flow rate of 50 mL/min. 

For ultramicro determination of alkali and alkaline-earth metals ion-exchange chromatography was combined with a high-sensitivity hydrogen flame ionization-detec-... 

Alkali, alkaline-earth metals Ion-exchange/ Zr phosphate Synthetic Mixtures Hydrogen flame ionization detector Ca. 10 g (Cs) 120) 121)... 

Catalytic reactions were carried out with 2 g catalyst placed in a fixed-bed continuous-flow reactor at the gas space velocity (F/W) of 1440 ml/g h under the reaction pressure of 200 KPa. The products were withdrawn periodically from the outlet of the reactor and analyzed by gas chromatography with a 4 m long squalane column and detected by a hydrogen flame ionization detector. The conversion and selectivity were calculated on the carbon number basis. 

Apparatus Barber-Colman and E.I.R. (Models 10, 5000, and AU-8) gas chromatographs fitted with hydrogen flame ionization detector. 

Apparatus F. M. Model 400 fitted with a hydrogen flame ionization detector (FID) and F. M. Model 700 equipped with a pulsed voltage electron-capture detector (ECD). 

The purpose of the detector is to determine when and how much of a compound has emerged from the column. Although the goal of all detectors is to be as sensitive as possible, many detectors are designed to be selective for certain classes of compounds. Dozens of different types of detectors have been developed, but only a few are used routinely. Those are thermal conductivity (TC), thermionic (N/P), electron capture (ECD), flame photometric (FPD), Hall electroconductivity detector (Hall or ELCD), hydrogen flame ionization detector (FID), argon ionization (AI), photoionization (PID), gas density balance (GDB), and the mass spectrometer. Chemists usually select a detector by the following criteria, listed in priority ... 

The straight line portion of a calibration curve Jrom the lowest detection level to the highest concentration before the line begins to bend. This usually is given in powers of 10. For example, the LDR of a hydrogen flame ionization detector is about 10. ... 

Figure 20-40. Cross section diagram of a Varian hydrogen flame ionization detector.

Use of the classical FID (hydrogen Flame Ionization Detector) in GC analysis would be quite inhibiting in a portable, compact device, with a reasonable operational life of 100-1000 h before its battery [14] and/or hydrogen supply [15] would need recharging or replacement. Therefore, alternate approaches are under development for the PHASED MGA, with preliminary results as follows ... 

The analysis of separated volatile fraction can be carried out using a number of gas chromatographic columns and conditions including those described in the Standard Test Method ANSI/ASTM D 2267-68 (3). The following conditions were used by us in the laboratory studies GC column, 6% OV 101 on 100-120 mesh Chromosorb G-HP, 5 ft X i in-stainless steel column temperature, 1.5 min hold at 60°C, temperature programmed to 105 °C at 10°C/min detector, hydrogen flame ionization. 

During the field studies a simpler isothermal Gow-Mac gas chromatograph equipped with a hydrogen flame ionization detector was used. A 12-rt X i-in. column packed with 5% OV-17 substrate on Chromosorb W-HP was used for separation at 80 °C and 20 mL/min flow of carrier gas. 

Thin-Layer Chromatography-Hydrogen Flame Ionization Method Kanzo 20(9) 976 (1979) CA 92 193709u... 

R.A. Dobbs, R.H. Wise, and R.B. Dean. Measurement of organic carbon in water using the hydrogen-flame ionization detector. Anal. Chem., 39 1255-1258,1967. 

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