Sensor for detecting a high molecular weight substance using ion

Details Sensor for detecting a high molecular weight substance using ion Sensor for detecting a high molecular weight substance using ion

1992-04-17

1994-01-25

Strecker, Gerard R.

Electricity: measuring and testing

Using ionization effects

For analysis of gas, vapor, or particles of matter

324469, 73 3105, 250283, G01N 2762, G01N 2764, H01J 4702

Patent

active

052819159

ABSTRACT:
A small, light and portable sensor for detecting and quantifying a harmful high molecular weight substance present in a sample gas in trace amounts is herein disclosed. In the sensor, light and heavy ions are formed by ionizing molecules of the sample gas components in an ionization region. The heavy ions are formed through an ion-molecule reaction. The passage of ions through an ion-passage control region is controlled by directly or indirectly controlling the electric field established between a central electrode and a counter electrode The ions which pass through the control region are collected on a collector electrode. The high molecular weight substance is detected and quantified on the basis of the output from the collector electrode.

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