Zero gravity purge and trap for monitoring volatile organic comp

Details Zero gravity purge and trap for monitoring volatile organic comp Zero gravity purge and trap for monitoring volatile organic comp

1990-06-27

1992-04-14

Hill, Jr., Robert J.

Chemistry: analytical and immunological testing

Including chromatography

436178, 436146, 436160, 422 89, 422 93, 73 2341, 585818, H01N 2100

Patent

active

051048108

ABSTRACT:
Traditionally, volatile organic compounds are monitored using the purge and trap technique required by the U.S. Environmental Protection Agency. However, this technique operates in two phases, liquid and gas, requiring gravity to effect the separation of the two phases. The present invention, which can be automated, incorporates a microporous hydrophobic bladder to permit zero gravity monitoring of volatile organic compounds in an aqueous solution.

REFERENCES:
patent: 4500432 (1985-02-01), Poole et al.
patent: 4715217 (1987-02-01), Coyne et al.
patent: 4745237 (1988-05-01), Ballard et al.
patent: 4952751 (1990-08-01), Blume et al.
"Amberlite.RTM./Duolite.RTM. Ion Exchange Resins", Technical Notes, Rohm & Haas Co.

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