The Spectrochemical Analysis of High Purity Gallium

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Gallium is separated from its impurities by solvent extraction of the HGaCl4 complex with isopropyl ether from 6-7 N HCl. Two extractions suffice to lower the Ga concentration to negligible amounts. The volume of the HCl phase after extraction is reduced and a measured portion dried on waxed graphite electrodes. The spectra are excited with a condensed spark and photographed. Maximum sensitivities reported are (parts impurity per million parts gallium). Al - .03, Ca - .03, Cr - .06, Cu - .015, Pb - .06, Mg - .015, Ni - .06, Zn - .12. The coefficient of variation of measurement varies from 3.6% for Cu to 14.8% for Pb.

Document Type: Research Article


Affiliations: Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Massachusetts

Publication date: August 1, 1959

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