Apparatus for emission spectrochemical analysis

Details Apparatus for emission spectrochemical analysis Apparatus for emission spectrochemical analysis

1979-09-18

1981-03-10

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With internal standard comparison

356313, G01J 330, G01N 2167

Patent

active

042550513

ABSTRACT:
Apparatus for emission spectrochemical analysis wherein the sample to be analyzed is excited by repeated spark discharge to emit light, which is dispersed to produce a spectrum containing emission lines characteristic of the elements in the sample. The intensity or quantity of light of each of the emission lines of the elements to be determined and that of the corresponding one of the emission lines selected as the internal standards for the elements to be determined are measured each time a spark discharge is produced to obtain the ratio of the former intensity or quantity to the latter at each spark discharge, and the ratios resulting from a predetermined number of spark discharges are averaged for each of the elements to be determined. From the average the content of each of the elements is read on a calibration curve.

REFERENCES:
patent: 2675734 (1954-04-01), Hasler et al.
patent: 3547541 (1970-12-01), Varnela

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