STATIC AND FLOW-INJECTION VOLTAMMETRIC DETERMINATION OF PERIODATE BY REDUCTION AT A ROTATING PLATINUM WIRE ELECTRODE


GOKCEL H. İ. , NISLI G.

ANALYTICA CHIMICA ACTA, vol.292, pp.99-105, 1994 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 292
  • Publication Date: 1994
  • Doi Number: 10.1016/0003-2670(94)00034-4
  • Title of Journal : ANALYTICA CHIMICA ACTA
  • Page Numbers: pp.99-105

Abstract

A method for periodate determination was developed as a result of static and flow-injection voltammetric investigations where a rotating platinum wire electrode was employed. In the static system, 4.0 X 10(-5)-4.2 x 10(-4) M periodate could be determined in the cell in pH 7.0-7.5 phosphate buffer. In the flow-injection system, periodate solutions of 20-100 mu l were injected into the carrier stream of a phosphate buffer solution at pH 7.0. The flow rates were in the range of 1.0-1.7 ml min(-1). The peak currents were measured at -0.07 V against a saturated calomel electrode. The determination of periodate concentrations in the range 1.0 X 10(-5)-1.0 X 10(-4) M was possible with a throughput of 15-40 samples per hour.