Atomic absorption spectrophotometer with furnace at pressure equ

Details Atomic absorption spectrophotometer with furnace at pressure equ Atomic absorption spectrophotometer with furnace at pressure equ

1988-03-30

1989-06-20

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

G01N 2174

Patent

active

048404845

ABSTRACT:
In an atomic absorption spectrophotometer including an electric furnace for drying and ashing a liquid sample to be analyzed and then atomizing the sample to generate atomic vapor, a low-pressure lamp for emitting light having a spectrum of an element to be analyzed onto the atomic vapor atomized in the electric furnace, a monochromator for splitting the transmitted light from the electric furnace and selecting a wavelength of an atomic absorption line absorbed by the element to be analyzed, and a signal processing unit for performing signal processing on the light having the selected wavelength supplied from the monochromator, the electric furnace is an airtight mechanism for maintaining airtightness of the inside of the electric furnace and an evacuation unit for evacuating the inside of the electric furnace to a pressure equal to the pressure inside the lamp.

REFERENCES:
patent: 3591289 (1971-07-01), Donega et al.
patent: 4098554 (1978-07-01), Huber et al.
Wagenaar et al, Spectrochimica Acta, vol. 23B, 1973, pp. 157, 162, 163, & 169.
Yasuda, Analytical Chemistry, vol. 38, 1966, pp. 592, 595-597.
Hollander et al, Combustion and Flame, vol. 13, 1969, pp. 63-65 & 68.

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