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Home  >  Journal list  >  Journal of the Ceramic Society of Japan ( 2003 - 2007 )  >  Vol.113  No.1322 (October) (2005)  >  pp.666-668

Journal of the Ceramic Society of Japan ( 2003 - 2007 )
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Indirect Determination of Alkali Metals and Lead by Fractional Dissolution/Ion Chromatography of Sulfates Deposited on Surface of Sulfur Dioxide-Treated Lead Glass

Hiroshi MITSUMATA1), Yoshiyuki KITA1) and Kazuo SAIMOTO1)
1) Lighting Company, Matsushita Electric Industrial Co., Ltd.

  An indirect determination of alkali metals and lead by fractional dissolution/ion chromatography of sulfates deposited on the surface of sulfur dioxide-treated lead glass was investigated. This method involves the following procedures: 1) Sodium sulfate and potassium sulfate are dissolved in 50% (v/v) ethanol. 2) Remaining lead sulfate is dissolved in 20 mM sodium hydroxide. 3) From the concentration of sulfate in each sample solution, the surface concentrations of the corresponding alkali metals and lead are calculated. From the analytical results for lead glass samples, we have ensured that treating the glass with sulfur dioxide resulted in the formation of high concentrations of sodium sulfate and potassium sulfate, in addition to traces of lead sulfate, on the glass surface.



Keyword:
Fractional dissolution, Ion chromatography, Sulfate, Sulfate ion, Alkali metals, Lead, Lead glass

Received: March 23, 2005
Accepted: July 21, 2005 , Published online: October 01, 2005
Copyright (c) 2005 The Ceramic Society of Japan

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