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在含有1.2环已烷二酮二肟的氢氧化钠底液中,钯可产生一灵敏的催化波,方法虽已应用于矿石分析,由于1.2环已烷二酮二肟在该底液中,在钯的峰电位前也产生一试剂峰,影响低浓度钯峰的测量,另外该试剂不易采购到,因此影响进一步推广应用,为寻找一种国内已有生产的肟类,我们对几种肟类进行试验,发现钯在碱性溶液中当有α—联呋喃甲醯二肟存在时,在E_p=-0.90伏(对S、C、E)产生一灵敏的催化波,最适宜的底液组成为0.14MNaOH—0.1％吡啶—0.2％抗坏血酸—0.5％四乙基氢氧化铵—8×10~(-4)Ma—联呋喃甲醯二肟,钯的浓度在0.001～0.2μg·ml~(-1)成线性关
In the sodium hydroxide bottom solution containing 1.2 cyclohexanedione dioxime, palladium can produce a sensitive catalytic wave, although the method has been applied to ore analysis, since 1.2 cyclohexanedione two oxime in the bottom liquid, In the palladium peak potential also produced a reagent peak, the impact of low concentrations of palladium peak measurement, the other is not easy to procure the reagents, thus affecting the further promotion of the application, in order to find a domestic production of oximes, we have several oxime Class found that palladium in alkaline solution when there α-furyl formazan dioxime in the presence of E_p = -0.90 V (to S, C, E) to produce a sensitive catalytic wave, the most appropriate bottom liquid The composition is 0.14M NaOH-0.1% pyridine-0.2% ascorbic acid-0.5% tetraethylammonium hydroxide-8x10-4 Ma-furfural formazan dioxime, and the concentration of palladium is 0.001-0.2μg · ml ~ (-1) into a linear relationship