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Abstract
A simple method is described for the determination of iodide or iodine in aqueous solutions by the generation and photometric measurement of an iodine thiocyanate complex, I(SCN)$sub 2$$sup -$, in the presence of excess hydrogen peroxide. Because other halides do not produce serious interferences when present in excesses of several thousandfold, separation from these anions can be avoided in many natural samples. The transition metal ions interfered to varying extents. It is suggested that pretreatment of natural samples with a cation exchange resin could remove interfering cations to acceptable levels. (JGB)
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