Spectrometry plasma burner

Details Spectrometry plasma burner Spectrometry plasma burner

1984-03-01

1985-11-05

Paschall, M. H.

Electric heating

Metal heating

By arc

219121PM, 219121PP, 31511151, 31323131, 356316, B23K 900, H01J 724

Patent

active

045516090

ABSTRACT:
A plasma burner or torch for emission spectrometry comprises an induction coil for generating a plasma, an outer jacket, an inner jacket coaxial therewith, a sleeve inside the inner jacket and coaxial therewith, a capillary tube inside the sleeve and oriented along the axis of symmetry, a cooling gas feed line, a plasma gas feed line, and an aerosol gas feed line. The distance of the sleeve from the inner jacket of the plasma burner is advantageously smaller than the distance between the sleeve and the capillary tube. The sleeve preferably consists essentially of quartz. In such a plasma torch, the rate of consumption of the plasma gas as well as of the cooling gas is reduced, while the detection power of the device for elements such as boron, iron, magnesium, phosphorous and zinc is comparable to conventional standard burners.

REFERENCES:
patent: 3296410 (1967-01-01), Hedger
patent: 3467471 (1969-09-01), Greenfield et al.
patent: 4147916 (1979-04-01), Fairbairn
patent: 4266113 (1981-05-01), Denton et al.
patent: 4482246 (1984-11-01), Meyer et al.

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