Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1994-02-25
1997-01-28
Snay, Jeffrey R.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422 91, 422116, 436 81, 73 1G, G01N 140
Patent
active
055975356
ABSTRACT:
Mercury Detection Method and Apparatus utilizes cartridges including gold for adsorbing mercury as an amalgam. The adsorbed mercury is desorbed by heating and passed through a Cold Vapour Atomic Fluorescence Spectrophotometer. Each cartridge is flushed with an inert gas, so that air and contaminants are never passed directly through the detector, so only inert gas passes through it. To further prevent adsorption of contaminants, the cartridges are maintained at a minimum temperature, above ambient temperature and below 100.degree. C. To enable unattended calibration, a permeation source is provided having a permeation chamber and a valve assembly, including 3 separate valves, to ensure that in an off state mercury vapour cannot leak to the cartridges. To ensure an efficient use of the inert gas, its flow can be adjusted between 3 different levels, for flushing, desorption of mercury, and an idle state to maintain the apparatus purged air.
REFERENCES:
patent: 3884639 (1975-05-01), Sugiyama et al.
patent: 4023929 (1977-05-01), Becker et al.
patent: 4151737 (1979-05-01), Breuer et al.
patent: 4531398 (1985-07-01), Di Benedetto et al.
patent: 5026652 (1991-06-01), Huber
Oct. 1991 Monitoring mercury levels in the environment: Application of a fluorescence approach for sub-PPB and PPT Levels By: P. B. Stockwell et al.
1991 Monitoring elemental mercury in an urban environment By: P. B. Stockwell et al. [Process Control and Quality, 1(1991) 293-296 Elsevier Science Publishers B.V., Amsterdam].
Schaedlich Frank H.
Schneeberger Daniel R.
Snay Jeffrey R.
Tekran Inc.
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