碘化物及碘酸盐的测定作者等发现,在稀硝酸溶液中,硫氰酸钾和铁(Ⅲ)盐反应生成的浅红橙色硫氰酸铁络合物,虽然硫氰酸盐的氧化作用褪色极慢,但在微量碘化物或碘酸盐存在下则很快。碘的这个催化作用由于少量硝酸盐的存在产生很大影响。对该催化反应已作了广泛研究并建立为一个新的碘微量测定法。催化法已用于以碘化物和碘酸盐形式的超微量碘 Determination of iodide and iodate The authors found that in dilute nitric acid solution, a light reddish-orange iron thiocyanate complex formed by the reaction of potassium thiocyanate and iron (III) salt, although the oxidation of thiocyanate Very slow fade, but in the presence of trace iodide or iodate is very fast. This catalytic effect of iodine has a great influence on the presence of a small amount of nitrate. The catalytic reaction has been extensively studied and established as a new iodine micrometric assay. Catalytic methods have been used for ultra-trace amounts of iodine in the form of iodides and iodates