Chemistry: analytical and immunological testing – Including sample preparation – Digestion or removing interfering materials
Patent
1987-08-31
1989-01-03
Lacey, David L.
Chemistry: analytical and immunological testing
Including sample preparation
Digestion or removing interfering materials
436179, 436 55, 436 80, 210766, G01N 100
Patent
active
047957131
ABSTRACT:
An automatic digestion system (10) is provided for digesting a continuous stream of wastewater prior to its analysis by a spectrometer system (12). The digestion system (10) includes a first metering pump (34) for drawing a continuous stream of wastewater (36) from a wastewater source (32). A second metering pump (38) draws a continuous stream of diluted nitric acid (40) from a source of acid (42) and mixes the acid with the wastewater to provide a stream of acidified wastewater (46). The acidified wastewater (46) is then heated, to digest the wastewater prior to its input into the spectrometer system (12).
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patent: 3322504 (1967-05-01), Capuano
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patent: 4397957 (1983-08-01), Allison
patent: 4514504 (1985-04-01), Rothman
Krishnamurty et al, Trace Metal Extract . . . by Nitric Acid-H.sub.2 O.sub.2, Atomic Absorption Newsletter, vol. 15, No. 3, May-Jun. '76.
Koop Rodney D.
Lobb Thomas A.
Martin, Jr. Richard L.
Johnson Lori-ann
Kaser Bruce A.
Lacey David L.
The Boeing Company
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