Measuring and testing – Gas analysis – Gas chromatography
Patent
1983-02-17
1985-04-23
Kreitman, Stephen A.
Measuring and testing
Gas analysis
Gas chromatography
G01N 3108
Patent
active
045121818
ABSTRACT:
In a chromatographic analysis, errors in the chromatographic analysis caused by barometric pressure variations are corrected by dividing the actual measured analysis (C.sub.m) by a correction factor which is calculated based on the actual atmospheric pressure at the time the measurement is made (P.sub.a), the atmospheric pressure at which the chromatographic analyzer system was calibrated, and the slope of a plot of C.sub.m /C.sub.a as a function of P.sub.a /P.sub.c where C.sub.a is the magnitude that C.sub.m would have if errors were not introduced by changes in barometric pressure.
REFERENCES:
patent: 2964938 (1960-12-01), Fuller
patent: 3057184 (1962-10-01), Spracklen
patent: 3240052 (1966-03-01), Reinecke et al.
patent: 3283563 (1966-11-01), Turner et al.
patent: 4141237 (1979-02-01), DeFord et al.
patent: 4196612 (1980-04-01), Clardy et al.
B. O. Ayers et al., "Effects of Changes in Atmospheric Pressure on Gas Chrom. Output Signals", Report No. 116-81, pp. 1-32.
1981 Abstracts Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy, Mar. 9, 1981, No. 264.
Ayers Buell O.
Clardy Edwin K.
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