Process and arrangement for determining at least one component o

Details Process and arrangement for determining at least one component o Process and arrangement for determining at least one component o

1987-11-03

1992-03-03

Lacey, David L.

Chemistry: analytical and immunological testing

Including sample preparation

Liberation or purification of sample or separation of...

422 88, 73 2342, 7386312, G01N 118

Patent

active

050932691

ABSTRACT:
A process for determination of one component of very low concentration in a test gas, which is guided in a supply line for concentration of the component across a sample collector, whose amassed quantity of samples is relinquished to a detection sensor. The arrangement makes available a measurement signal even during the collection of the sample. It also makes even the individual components of a multicomponent test gas detectable and a component-specific cross sensitivity of the detection sensor controllable. For this, the following process steps are provided: the test gas is first guided across the detection sensor 3 and then across the multistaged sample collector 7 having arrangements for separation of the several components; then after interruption of the supply of test gas, each individual stage 4, 5 and 6 separately relinquishes its separated component to the detection sensor 3.

REFERENCES:
patent: 4073620 (1978-02-01), Gray et al.
patent: 4277251 (1981-07-01), Leichnitz et al.
patent: 4515751 (1985-05-01), Krieg
patent: 4759210 (1988-07-01), Wohltjen
patent: 4912051 (1990-03-01), Zaromb
Kindlund, A. et al., "Quartz Crystal Gas Monitor with a Gas Concentrating Stage", Sensors and Actuators, 6 (1984), 1-17.

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