论文部分内容阅读
在 H3 PO4、90± 0 .5°C水浴条件下 ,Ru( )催化高碘酸钾氧化偶氮胂 I的褪色反应基础上 ,提出了测定钌的新催化光度法。钌质量浓度在 0～ 0 .0 8μg/1 0 m L范围内符合比尔定律 ,检出限为3.47× 1 0 -4μg/m L。对 0 .0 5 μg/1 0 m L Ru( )测定的相对标准偏差为 1 .47% ( n=1 0 )。该催化反应是一级反应 ,表观活化能为 5 8.82 k J/mol。此法已用于了某些冶金产品和矿石中钌的测定 ,相对标准偏差为 1 .73%～ 2 .0 3% ,标准加入回收率为 97%～ 1 0 5 %。
A new catalytic spectrophotometric method for the determination of ruthenium was proposed based on the catalytic oxidation of arsenazo I by potassium periodate catalyzed by Ru (superscript 3) in H3PO4 and 90 ± 0.5 ° C water bath. Beer’s law was obeyed in the range of 0-0.08 μg / 10 m L with a detection limit of 3.47 × 10 -4 μg / m L. The relative standard deviation (RSD) for the 0 .05 μg / 10 m L Ru () assay was 1.47% (n = 10). The catalytic reaction is a first order reaction with an apparent activation energy of 5 8.82 kJ / mol. This method has been used for the determination of ruthenium in some metallurgical products and ores, with a relative standard deviation of 1.73% ~ 2.03% and a standard recovery of 97% ~ 105%.