Measuring and testing – Gas analysis – Gas chromatography
Patent
1987-02-02
1987-11-24
Levy, Stewart J.
Measuring and testing
Gas analysis
Gas chromatography
73 29, G01N 3066, G01N 3070
Patent
active
047080132
ABSTRACT:
A method of measuring the amount of liquid water in an aerosol begins with removing adsorbed water and water vapor from a sample chamber. A first sample flow of the aerosol is directed through the sample chamber at a first flow rate for a first time period, then the liquid and solid components of the sample are separated from the gaseous components in the sample chamber. The liquid components of the first sample are evaporated from the sample chamber by directing a flow of a carrier gas through the sample chamber. The water vapor is separated from the evaporated components of the first sample and the quantity of water vapor is measured. Adsorbed water and water vapor is removed from a reference chamber which is substantially identical to the sample chamber. The liquid and solid components are then separated from the gaseous components of a second sample flow of the aerosol and the gaseous components of the second sample are directed through the reference chamber at a second flow rate for a second time period. The liquid components are evaporated from the reference chamber by directing a flow of a carrier gas through the reference chamber and the quantity of water vapor in the carrier gas from the reference chamber is measured. The amount of liquid water in the aerosol is then determined by subtracting the amount of water measured in the reference chamber carrier gas from the amount of water measured in the sample chamber carrier gas.
REFERENCES:
patent: 3753653 (1973-08-01), Brieva et al.
patent: 4215563 (1980-08-01), Clardy et al.
patent: 4403503 (1983-09-01), Banerjee et al.
Deinken John J.
Levy Stewart J.
Roskos Joseph W.
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