Atomic absorption spectrometer for measuring the mercury concent

Details Atomic absorption spectrometer for measuring the mercury concent Atomic absorption spectrometer for measuring the mercury concent

1995-08-30

1997-04-08

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

G01N 2133

Patent

active

056190417

ABSTRACT:
An atomic absorption spectrometer for measuring mercury concentration in a sample which includes an arrangement for producing emission lines of 184.9 and 253.7 nm at the same time, a sample accommodating chamber which can be irradiated with radiation of the emission lines, two electro-optical transducers responsive, with different sensitivities, to the radiation emission lines and arranged so that radiation passing through the sample chamber simultaneously impinges thereon, each extinction measuring means having a preselected extinction value range, and a comparator for switching between respective measurement ranges to determine the mercury concentration.

REFERENCES:
patent: 3173016 (1965-03-01), Williston et al.
patent: 3845309 (1974-10-01), Helm et al.
patent: 3920334 (1975-11-01), Steichen et al.
patent: 3932754 (1976-01-01), Reidl et al.
patent: 4192996 (1980-03-01), Kronick et al.
patent: 5045704 (1991-09-01), Coates
patent: 5170057 (1992-12-01), Danielson
"Non-Flame Atomic Absorption In The Vacuum Ultraviolet Region" (J.W. Robinson, P.J. Slevin, G.D. Hindman, D.K. Wolcott, Anal. Chem. Acta 61, 431, 1972.)
"New Mercury Spectrometer For The Measurement of Mercury Vapour In Air" (E. Hoffmann, Ch. Ludke, Fresenius Z. Anal. Chem. 298, 9-11, 1979).
"Improvements In The Atomic-fluorescence Determination of Mercury by The Cold-vapour Technique". (K.C. Thompson, R. G. Godden, Analyst 100, 544-548, 1975).

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