Electromagnet for an atomic absorption spectrometer

Details Electromagnet for an atomic absorption spectrometer Electromagnet for an atomic absorption spectrometer

1989-11-07

1991-05-14

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With background radiation comparison

356312, G01N 2131, G01N 2174

Patent

active

050150936

ABSTRACT:
A solenoid serves for generating a magnetic field at the location of a sample which is to be atomized in an atomic absorption spectrometer. A shift of the absorption lines of the atoms in a sample relatively to the emission lines in a measuring light beam (18) passed through the atomized sample is effected by the magnetic field due to the Zeeman effect. The solenoid (44) comprises a pair of pole pieces (46, 48) between which an air gap is formed. An atomizing device atomizes the sample within this air gap. Field coils generate a magnetic flux through the pole pieces (46, 48), the air gap and a magnetic return path (76). The field coils (60, 62) are arranged on pole pieces (46, 48) close to the air gap. The windings of the field coils (60, 62) are formed by tubes (216) which are designed to permit passage of a cooling liquid therethrough.

REFERENCES:
patent: 4035083 (1977-07-01), Woodriff et al.
patent: 4407582 (1983-10-01), Woodriff
patent: 4449820 (1984-05-01), Koizumi et al.
Frech et al., Analytical Chemistry, vol. 58, No. 9, Aug. 1986, pp. 1973-1977.
Violi, Bulletin Oerlikon, No. 385/386, Jan. 1969, pp. 1-4.
Liddell et al., Analytical Chemistry, vol. 52, No. 8, Jul. 1980, pp. 1256-1260.
Tie-Zheng et al., Analytical Chemistry, vol. 57, No. 2, Feb. 1985, pp. 424-427.
Sukhorukov et al., Instruments & Experimental Techniques, No. 5, Part 2, Sep.-Oct. 1986, pp. 1224-1225.

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