论文部分内容阅读
在磷酸介质和加热条件下，钌（Ⅲ）对高碘酸钾氧化而尔蓝（NB）有强催化作用，详细研究了动力学条件，建立了动力学光度测定钌的新方法，lg（Ao／A）与C_(Ru)（Ⅲ）呈线性关系的范围为0．008~1．2μg/L，检出限为0．008μg/L对0．008和0．8μg/LRu（Ⅲ）测定的RSD分别为14．30％和1．73％（n=11）。本催化反应对Rn（Ⅲ）、NB和KIO_4为一级反应，表观活化能为73.43kJ/mol，探讨了反应机理。考察了40多种共存离子的影响，大多数常见离子不干扰，13倍Os（Ⅷ）、30倍Ir（Ⅳ）、60倍（Ⅲ）和Rh（Ⅲ）、400倍Pt（Ⅳ）和Pd（Ⅱ）不干扰。本法已用于某些岩矿和冶金产品中钌的测定，结果满意。
Under phosphoric acid medium and heating conditions, ruthenium (Ⅲ) has a strong catalytic effect on the oxidation of potassium periodate (NB) and kinetics conditions. A new method of kinetic spectrophotometry for the determination of ruthenium has been established. Lg (Ao / A) was linear with C_ (Ru) (Ⅲ) in the range of 0.008 ~ 1.2μg / L with the detection limit of 0.008μg / L for 0.008 and 0.8μg / LRu (Ⅲ) The RSDs were 14.30% and 1.73%, respectively (n = 11). The catalytic reaction of Rn (Ⅲ), NB and KIO_4 for the first reaction, the apparent activation energy of 73.43kJ / mol, discussed the reaction mechanism. The effects of more than 40 kinds of coexisting ions were investigated. Most of the common ions did not interfere with the fluorescence spectra of 13x Os (30), 30x Ir (Ⅳ), 60x (Ⅲ) and Rh (Ⅲ), 400x Pt (Ⅱ) Do not interfere. This method has been used for the determination of ruthenium in some rock and mine products and metallurgical products with satisfactory results.