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Determination of trace inpurities high-purity aluminum oxide by inductively-coupled plasma atomic emission-spectrometry

✍ Scribed by T. Ishizuka; Y. Uwamino; A. Tsuge; T. Kamiyanagi

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 426 KB
Volume: 161
Category: Article
ISSN: 0003-2670
DOI: 10.1016/s0003-2670(00)85798-0

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✦ Synopsis

Trace impurities (Ca, Cu, Fe, Mg, Mn, Na and Si) in 99.99% aluminum oxide were determined by inductively-coupled plasma atomic emission spectrometry (i.c.p.la.e.6.). The sample was fused with lithium carbonate/boric acid to determine Ca, Cu, Mg, Mn, Na and Si or dissolved in phosphoric/sulphuric acids to determine iron. Matrix effects on the calibration graphs for each element were studied: for accurate determinations, calibration solutions must contain lithium and boric acid (or aluminum and phosphoric and sulfuric acids for iron).

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