Lead-in-air monitor

Details Lead-in-air monitor Lead-in-air monitor

1982-11-29

1985-11-05

Smith, Alfred E.

X-ray or gamma ray systems or devices

Specific application

Fluorescence

378 50, G01N 2322

Patent

active

045518483

ABSTRACT:
The invention comprises a filtration unit which retains particles from air passed through a filter medium, a transport mechanism which moves the medium to a station where the particles are subjected to X-rays, apparatus responsive to X-ray fluorescence exited by the X-rays in a predetermined element, for example lead, during a predetermined time interval and issuing a count signal indicative of quantity of the element and a microprocessor for controlling the transport and counting apparatus.

REFERENCES:
patent: 2722998 (1955-11-01), Hall
patent: 3984679 (1976-10-01), Lublin et al.
patent: 4056969 (1977-11-01), Barringer
patent: 4152591 (1979-05-01), Averitt et al.

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