An Apparatus for Micro Gas Analysis
- 1 December 1947
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 18 (12) , 918-924
- https://doi.org/10.1063/1.1740882
Abstract
Gas samples of a few micron liters can be analyzed to within a few percent accuracy with the described system. Identification of components is made from condensation points, comparison readings of Pirani and McLeod gauges, and differences in speeds of flow. Condensation points at sub‐liquid nitrogen temperatures are had by evaporating liquid nitrogen at reduced pressures. Except for the removal of CO and H2 by ignition with O2, and O2 with a tungsten filament, chemical methods have been eliminated. Transfer of minute gas quantities is greatly facilitated by use of small mercury‐diffusion pumps.Keywords
This publication has 4 references indexed in Scilit:
- A Pirani Gauge for Use at Pressures up to 15 mmReview of Scientific Instruments, 1946
- Apparatus for Microanalysis of GasIndustrial & Engineering Chemistry Analytical Edition, 1939
- Decomposition of Ammonia by Optically Excited Mercury AtomsProceedings of the National Academy of Sciences, 1926
- CHEMICAL REACTIONS AT VERY LOW PRESSURES. I. THE CLEAN-UP OF OXYGEN IN A TUNGSTEN LAMP.Journal of the American Chemical Society, 1913