Flame atomic absorption spectrophtometer including apparatus and

Details Flame atomic absorption spectrophtometer including apparatus and Flame atomic absorption spectrophtometer including apparatus and

1986-03-03

1988-02-23

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

356325, G01N 2172

Patent

active

047266791

ABSTRACT:
The optical measurement signals in a flame atomic absorption spectrophotometer are first amplified in a substantially linear variable gain amplifier. The gain of the variable gain amplifier is adjusted to provide a predetermined magnitude of output signal during a calibration phase of the spectrophotometer. The resultant output signals from the variable gain amplifier are then converted to a logarithmic function in a logarithmic amplifier during optical absorption measurements.

REFERENCES:
patent: 3499160 (1970-03-01), Gordon
patent: 3522739 (1970-08-01), Coor et al.
patent: 3586441 (1971-06-01), Smith et al.
patent: 4070112 (1978-01-01), Tsunazawa et al.

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