Gas Chromatography of Pyrolytic Products of Purines and Pyrimidines.

Jennings, E.C.; Dimick, K. P.

doi:10.1021/ac60192a011

Cited by 31 publications

(9 citation statements)

References 9 publications

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“…With chemically modified DNA, the need to modify further before being able to apply gas chromatography is an obvious disadvantage, and no publications are available using this method for mutagen studies. An alternative approach might be the separation and identification of pyrolysis products from treated DNA (Jennings and Dimick, 1962), but again no applications to the present problem appear to have been made.…”

Section: Gas Chromatographymentioning

confidence: 97%

Chemical Mutagens

1971

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Section: Gas Chromatographymentioning

confidence: 97%

Chemical Mutagens

1971

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“…The hot and cold spots become an important discouraging factor in pyrolysis studies. Since the same filament is used repeatedly, carbon being dissolved in the platinum foil changes its characteristics (Jennings and Dimick, 1962). Further, the changing resistivity of the filament changes the equilibrium temperature of the filament.…”

Section: Aiche Journalmentioning

confidence: 99%

Novel microreactor with quench system for kinetic study of propane pyrolysis

1988

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A novel microreactor with a rapid direct quench system was developed to study fast hydrocarbon pyrolysis reactions. Heating of reactants inside the reactor was achieved by a Curie Point Pyrolyser. The propane pyrolysis reaction was studied at four different temperature levels: 600, 700,800 and 900°C. Pyrolysis times were varied from 0 to 2 s between 600 to 800°C and from 0 to 1 s at 900°C. The primary reaction products were methane, ethylene, hydrogen and propylene. Using a developed and very effective quench technique increased the production of olefins and reduced the formation of methane. A first-order kinetic analysis performed on the experimental data between 600 and 700°C yielded an activation energy of 216 kJ/mol, which is in the range of other researchers.

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“…Repeatability can be adversely affected by two factors: (i) changes in the analytical conditions, and (ii) deviations from a standardized procedure for the preparation of samples. Jennings & Dimick (1962) noted that filament pyrolysers had a finite life-time because of carbonization and, as a consequence, higher currents were required to obtain the same final pyrolysis temperature as the filament aged. As this would inevitably affect the temperature/time characteristics of the sample, it could by implication alter the nature of the pyrolysate.…”

Section: B Sample Preparationmentioning

confidence: 99%