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研究在酸性介质中钯（Ⅱ）阻抑试剂ＤＡｏＶＭＰＭ与Ｖ（Ｖ）显色反应的动力学参数，反应的表观速率常数Ｋ０＝２．２８５×１０－２ｍｉｎ－１，表观活化能Ｅａ＝６７．５１ｋＪ／ｍｏｌ。基于这种阻抑作用建立了一种测定钯的动力学光度分析法，Ｐｄ（Ⅱ）含量在０．５μｇ／２５ｍＬ～１０．０μｇ／２５ｍＬ能被准确检出，检出限为５．０×１０－９ｇ／ｍＬ。该方法灵敏度高，稳定性好，用于石钯渣和钯催化剂中钯的测定，本法的相对标准差ＲＳＤ为１．０‰～１．５‰，回收率为９６％～１０３％。
The kinetic parameters of the color reaction of DAoVMPM with V (V) were investigated in acidic medium. The apparent rate constant K0 = 2.285 × 10-2min-1 and the apparent activation energy Ea = 67.51 kJ / mol. Based on this inhibition, a kinetic spectrophotometric method for the determination of palladium was established. The content of Pd (Ⅱ) can be accurately detected in the range of 0.5μg / 25mL ~ 10.0μg / 25mL with the detection limit of 5.0 × 10-9 g / mL. The method has high sensitivity and good stability, and is used for the determination of palladium in stone-palladium slag and palladium catalyst. The relative standard deviation RSD of this method is 1.0 ‰ ~ 1.5 ‰ and the recovery rate is 96% -103%.