Colloidal titration of aqueous zirconium solutions with poly(vinyl sulfate) by potentiometric endpoint detection using a toluidine blue selective electrode.

نویسندگان

  • Osamu Sakurada
  • Yasutake Kato
  • Noriyoshi Kito
  • Keiichi Kameyama
  • Toshiaki Hattori
  • Minoru Hashiba
چکیده

Zirconium oxy-salts were hydrolyzed to form positively charged polymer or cluster species in acidic solutions. The zirconium hydrolyzed polymer was found to react with a negatively charged polyelectrolyte, such as poly(vinyl sulfate), and to form a stoichiometric polyion complex. Thus, colloidal titration with poly(vinyl sulfate) was applied to measure the zirconium concentration in an acidic solution by using a Toluidine Blue selective plasticized poly(vinyl chloride) membrane electrode as a potentiometric end-point detecting device. The determination could be performed with 1% of the relative standard deviation. The colloidal titration stoichiometry at pH < or = 2 was one mol of zirconium per equivalent mol of poly(vinyl sulfate).

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عنوان ژورنال:
  • Analytical sciences : the international journal of the Japan Society for Analytical Chemistry

دوره 20 2  شماره 

صفحات  -

تاریخ انتشار 2004