Abstract
Iodate, bromate and hypochlorite were determined as iodine by flow injection amperometry at a platinum or glassy carbon electrode by injecting them into an eluent 0.20
M
in hydrochloric acid and 0.024
M
in potassium iodide or an eluent 2
M
in sulphuric acid and 0.12
M
in potassium iodide. The rectilinearity range is from 10
-3
to 10
-7
M
. Organic compounds that can be oxidised or iodinated by iodine were determined on-line by injecting them in acidic solution into an iodate-iodide eluent and observing the decrease in the iodine signal. The determination was also performed by injecting a pre-reacted solution of iodine and the organic compound and monitoring the excess of iodine.