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报道在９０±０．５℃和硫酸介质中，Ｒｕ（Ⅲ）催化高碘酸盐氧化亚甲蓝（ＭＢ）的反应，实现了钉的动力学光度法测定，研究了反应的适宜条件及动力学参数，并探讨了反应机理。方法的线性范围为０．０－１．２和１．２－５．６μｇ／Ｌ，检出限为０．００５μｇ／Ｌ。共存离子浓度高于Ｒｕ（Ⅲ）浓度５０倍不干扰测定。本法灵敏度高、选择性好、稳定，已满意地用于岩矿及冶金产品中钉的测定，其ＲＳＤ为１．３％－２．２％，标准加入回收率为 ９９％－１０５％。
It was reported that Ru (Ⅲ) catalyzed the reaction of periodate oxidation of methylene blue (MB) at 90 ± 0.5 ℃ and sulfuric acid medium to achieve the kinetic spectrophotometric determination of nails. The suitable reaction conditions and kinetics Learning parameters, and discussed the reaction mechanism. The linear range of the method was 0.0-1.2 and 1.2-5.6 μg / L with a detection limit of 0.005 μg / L. Coexisting ion concentrations higher than 50 times the Ru (III) concentration did not interfere with the assay. This method has high sensitivity, good selectivity and stability. It has been used satisfactorily for the determination of nails in rock, ore and metallurgy products. Its RSD is 1.3% -2.2% and the standard addition recovery is 99% -105%.