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F Meade

Publications and source records attributed to F Meade.

15 recordsLinked to original sources
PubMed1975

The estimation of carbon dioxide concentration in the presence of nitrous oxide, using a Lloyd-Haldane apparatus.

A method of gas analysis is described for estimating carbon dioxide in the presence of nitrous oxide, using a modified Lloyd-Haldane apparatus. Some of the sample, after scrubbing with soda-lime, bubbles through the potash and this eliminates the solubility effect of nitrous oxide by equilibrating the standard potash solution with nitrous oxide at the tension of the sample analysed and eliminating absorption of nitrous oxide from the burette. The results show close agreement with another apparatus and method based on different principles. The method is absolute, requiring neither empirical nor theoretical correction.

Carbon Dioxide↗
PubMed1975

A paramagnetic method for measuring the carbon dioxide concentration of a gas.

A paramagnetic method of carbon dioxide analysis enables the simultaneous analysis of carbon dioxide and oxygen to be made at 2-min intervals. The method depends upon observing the change of oxygen concentration in a gas mixture before and after absorbing the carbon dioxide component. The carrier-gas in the experiments reported was nitrogen. The output of the paramagnetic meter was measured both by a digital voltmeter and by a chart recorded and the carbon dioxide concentrations calculated from these observations (Y1% and Y2% respectively) were compared with those obtained by Lloyd-Haldane (x%) gas analysis, for carbon dioxide concentration of 2-20% in a range of oxygen concentrations of about 9-90%. The agreement between paramagnetic and Lloyd-Haldane carbon dioxide analysis is shown in the following linear regression equations: Y1=0.996x-0.001 (r=0.9999+/-0.04 SEM of estimate; P less than 0.001); Y2=0.997x-0.006 (r=0.9999+/-0.06 SEM of estimate; P less than 0.001). Carbon dioxide in nitrogen was measured by the prior addition of an arbitrary concentration of oxygen, to a gas sample. The method is applicable to the measurement of carbon dioxide and oxygen, when the carrier-gas may have characteristics which preclude the use of katharometer, infra-red or Haldane analysis.

Absorption↗