Random access charge transfer devices for multi-element atomic a

Details Random access charge transfer devices for multi-element atomic a Random access charge transfer devices for multi-element atomic a

1996-03-01

1998-01-13

Hantis, K.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

356326, G01J 330

Patent

active

057085021

ABSTRACT:
A simultaneous multi-element atomic absorption spectrometry system includes a light source, a furnace, a spectrometer, and a random access charge transfer device. The furnace creates vapors of a sample contained within the furnace. The light source passes a light beam through the furnace so that wavelengths of the light beam corresponding to spectral lines of multiple elements contained in the vapors are absorbed by the vapors. The spectrometer receives the light beam after the light beam has passed through the furnace, and disperses the light beam into a spectrum. The random access charge transfer device receives the light beam after the light beam has passed through the spectrometer, integrates and stores charge corresponding to the intensity of the light beam, and randomly accesses for readout subarrays of the random access charge transfer device corresponding to spectral lines of the multiple elements. The spectrometry system also includes an optical apparatus that receives the light beam and shifts the light beam between a first and a second position.

REFERENCES:
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Harnly, James M.; "Instrumentation for Simultaneous Multielement Atomic Absorption Spectrometry with Graphite Furnace Atomization"; Fresenius J. Anal. Chem. 355; pp. 501-509; 1996.
Harnly, James M.; "Graphite Furnace Atomic Absorption Spectrometry Using a Linear Photodiode Array and a Continuum Source"; Journal of Analytical Atomic Spectrometry; vol. 8; pp. 317-324; Mar., 1993.
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Hsiech, Churming et al.; "Continuum-Source Atomic Absorption Spectroscopy with an Echelle Spectrometer Adapted to a Charge Injection Device"; Analytical Chemistry; vol. 62, No. 18; pp. 1983-1988; Sep. 15, 1990.
Perkin Elmer Corporation; "SIMAA 6000 Atomic Absorption Spectrometer".

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