Inductively coupled plasma atomic fluorescence spectrometer

Details Inductively coupled plasma atomic fluorescence spectrometer Inductively coupled plasma atomic fluorescence spectrometer

1980-05-22

1981-11-17

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

356315, 356317, 356417, 313209, G01N 2164, G01N 2173

Patent

active

043008348

ABSTRACT:
An inductively coupled plasma atomic fluorescence spectrometer (ICP-AFS) for multielement analysis of unknown samples. The ICP-AFS spectrometer comprises a plasma stream atomizing a dispersed sample and directed along a central axis, a plurality of optical stations surrounding the central axis, each including an energizing illuminator and a fluorescence detector focused at the same region of the plasma stream, and a readout system for identifying the unknown samples. Preferably, the plasma stream is controlled by inductive coupling, the energizing illuminator is a modified hollow cathode lamp, the fluorescence detector includes an interference filter, and the readout system incorporates multiplexing and intermittent modulation of the energizing illuminators.

REFERENCES:
patent: 2847899 (1958-08-01), Walsh
patent: 3428401 (1969-02-01), Buzza
patent: 3619061 (1971-11-01), Mitchell
patent: 3958883 (1976-05-01), Turner
Measures et al. "Analyzing Fluorescence Decay". Laser Focus, _Nov. 1974, pp. 49-52.
Mitchell et al. "Simultaneous Multielement Analysis Using Sequentially Excited Atomic Fluorescence Radiation", Spectrochimica Acta, vol. 25B, No. 4, pp.175-182.
D. G. Mitchell & A. Johansson, title unknown, 5 Spectrochimia Acta 1971, pp. 178-180.
V. A. Fassel & R. N. Kniseley, "Inductively Coupled Plasma-Optical Emission Spectroscopy", Analytical Chemistry, vol. 46, No. 13, Nov. 1974, pp. 1110A-1120A.
V. A. Fassel & R. N. Kniseley, "Inductively Coupled Plasma,"Analytical Chemistry, vol. 46, No. 13, Nov. 1974, pp. 1155A-1164A.
A. Montaser & V. A. Fassel "Inductively Coupled Plasma as Atomization Cells . . . ", Analytical Chemistry, vol. 48, No. 11, Sep. 1976, pp. 1490-1499.
V. A. Fassel, "Quantitative Elemental Analyses by Plasma Emission Spectroscopy,"Science, vol. 202, 13 Oct. 1978, pp. 183-191.

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