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✦   LIBER   ✦

Static and flow-injection voltammetric determination of periodate by reduction at a rotating platinum wire electrode

✍ Scribed by H.İ. Gökçel; G. Nişli

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
521 KB
Volume
292
Category
Article
ISSN
0003-2670

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✦ Synopsis

AbStraet

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 lo-'-4.2 x 10m4 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 pl 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 -I. 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 lo-'-1.0 X 10m4 M was possible with a throughput of 15-40 samples per hour.

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