A COMPARATIVE STUDY OF THE SPECTROCHEMICAL ANALYSIS OF A COPPER BASE SOLUTION BY THE INTENSITY LINE RATIO, THE LINE WIDTH AND THE AREA RATIO METHODS.
Final rept., pt. 2, 1 Oct 64-1 Apr 65,
BOSTON COLL CHESTNUT HILL MASS
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The precision of spectrochemical analysis declines in proportion to the increase in concentration of impurities for which an analysis is sought. This study endeavored to discover of it was possible to increase the precision for a copper base metal for higher percentages of lead, zinc and tin. A solution technique was followed since this at once offered the most reliable approach to preparing standards and because segregation opposes a reproducible result. Three methods of reducing the data of a large number of line pairs were followed, namely, the Intensity Ratio, the Line Width and the Integrated Area Ratio methods. The accummulated data shows little advantage to using the Line Width and the Integrated Ratio Methods over the Line Intensity Ratio Method when lower concentrations are investigated. As the concentrations increase however, a marked decrease in the coefficient of variation results from using the Integrated Ratio Method. This increased precision is accompanied by additional time and effort in preparing working curves. After a curve is established, on the other hand, the method consumes a little more time than presently used methods. Author
- Inorganic Chemistry
- Atomic and Molecular Physics and Spectroscopy