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在酸性介质中钯（Ⅱ）对Ⅴ（Ⅴ）－Ｍｎ（Ⅱ）－Ｔｗｅｅｎ－２０－ＤＡｍＨＭ体系显色反应有阻抑作 用，基于此建立了一种测定钯的动力学分析方法，并研究了该阻抑反应的动力学参数。方法 的线性范围为２０～２４０μｇ Ｐｄ（Ⅱ）／Ｌ，检测限为８．４×１０－９ｇＰｄ（Ⅱ）／ｍＬ。该体系灵敏度高，稳 定性好，用于石钯渣和钯催化剂中把（Ⅱ）的测定，结果满意。
Palladium (Ⅱ) inhibits the color reaction of Ⅴ (Ⅴ) -Mn (Ⅱ) -Tween-20-DAmHM system in acidic medium. Based on this, a kinetic method for the determination of palladium has been established. The kinetic parameters of the repression reaction. The linear range of the method is 20 ~ 240μg Pd (Ⅱ) / L, the detection limit is 8.4 × 10-9gPd (Ⅱ) / mL. The system has the advantages of high sensitivity and good stability, and is satisfactory for the determination of (II) in the slag of palladium and palladium.