SPECTROGRAPHIC ANALYSIS OF ORES BY INTRODUCING THE POWDER INTO THE ARC IN A STREAM OF AIR
Journal Article
·
· Spectrochimica Acta (England) Divided into Spectrochim. Acta, Part A and Spectrochim. Acta, Part B
A new method is presented for the spectrographic analysis of substances in powder form, using an alternating current arc, which is radiated by a high frequency dischurge. The powder, carried in a stream of air, is introduced evenly into the discharge zone of a horizontal carbon or metallic arc. The air stream also stabilizes the arc. The introduction of the material in a stream of air prevents reactions which normally occur on the electrodes, prevents the fractional evaporation of the different elements, and ensures their uniform entry into the discharge zone and uniform conditions of excitation. The excitation conditions depend very little on the compositions of the electrodes, and are mainly determined by the ionization potentials of the elements in the powder blown in. This technique gives a significant increase in sensitivity and reproducibility, and reduces the time required for analysis. It offers great possibilities for direct photoelectric measurement of line intensities because the radiation remains constant. (auth)
- Research Organization:
- Inst. of Applied Mineralogy, Moscow
- NSA Number:
- NSA-12-009713
- OSTI ID:
- 4345224
- Journal Information:
- Spectrochimica Acta (England) Divided into Spectrochim. Acta, Part A and Spectrochim. Acta, Part B, Journal Name: Spectrochimica Acta (England) Divided into Spectrochim. Acta, Part A and Spectrochim. Acta, Part B Vol. Vol: 10; ISSN SPACA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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