Drain apparatus for the reaction vessel in an atomic absorption

Details Drain apparatus for the reaction vessel in an atomic absorption Drain apparatus for the reaction vessel in an atomic absorption

1979-09-26

1981-06-16

Marcus, Michael S.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing liquid or solid sample

422 81, 422116, 23230A, G01N 2766, G01N 2113, G01N 3320

Patent

active

042737427

ABSTRACT:
Disclosed is a system for the measurement of the atomic absorption of gaseous samples including a reaction vessel and conduits for supplying liquid sample, carrier gas and a reagent to the vessel. A discharge conduit is coupled between the reaction vessel and the measuring cell of an atomic absorption spectrometer. The reaction vessel has a drain conduit and a relief valve in the drain conduit. Control means are provided for controlling the flow of liquid sample, carrier gas, reagent and gaseous sample through the corresponding conduits in accordance with the predetermined program for making consecutive measurements. A pressure sensor is provided for sensing pressure in the reaction vessel above a specified pressure indicative of incomplete draining of the vessel and below a specified pressure indicative of substantially complete draining of the vessel. The control means is coupled to the pressure sensor and is responsive to a pressure above the specified pressure to disable the system from a subsequent measurement.

REFERENCES:
patent: 3844719 (1974-10-01), Hammitt
patent: 3929411 (1975-12-01), Takano et al.
patent: 4121907 (1978-10-01), Roque
patent: 4230665 (1980-10-01), Huber

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