Potentiometric flow-injection determination of iodide and iodine.
A potentiometric flow-injection system is described, in which iodide in the concentration range 10(-6)-10(-1)M may be determined at rates of up to 360 samples/hr at a flow-rate of 17.8 ml/min. Iodine, after on-line reduction to iodide with 0.1M sodium metabisulphite, can also be determined, with a throughput of 60 samples/hr for 10(-5)-10(-3)M iodine. Analyses of two pharmaceutical preparations for iodide and iodine are reported, and the results are in reasonable agreement with titrimetric values.
Davey
D E
DE
School of Chemical Technology, S.A. Institute of Technology, P.O. Box 1, Ingle Farm, South Australia, 5098.
Mulcahy
D E
DE
O'Connell
G R
GR