2-ニトロソ-5-ジエチルアミノフェノールを用いるパラジウム(II)の吸光光度定量

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タイトル別名
  • ２‐ニトロソ‐５‐ジエチルアミノフェノールを用いるパラジウム（ＩＩ）の吸光光度定量
  • Spectrophotometric determination of palladium with 2-nitroso-5-diethylaminophenol
  • 2 ニトロソー5 ジエチルアミノフェノール オ モチイル パラジウム 2 ノ

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抄録

2-Nitroso-5-diethylaminophenol (nitroso-DEAP) reacts with palladium to form the red complex in acidic solution {(27) N H2SO4}. This complex is quite soluble in aqueous acidic solution and is very stable. Analytical-procedure is as follows. Transfer the sample solution containing about 30 μg or less of Pd(II), to a 10 ml volumetric flask. Add 3 ml of 15 N sulfuric acid and 1 ml of nitroso-DEAP aqueous solution (6×10-3 M in 0.1 N H2SO4). Dilute it to 10 ml with distilled water. After standing for about 5 min, measure the absorbance at 540 nm. The molar absorptivity of the complex at 540 nm is 2.33×104 l mol-1 cm-1, and the absorbance of the reagent blank is 0.013±0.002. The composition of the complex is metal: ligand=1:2, and the complex does not decompose for at least 3 days. Less than 10-2M of K+, Na+, NO3- and Cl-, less than 10-3M of Mg2+, Ca2+, Zn2+, Cd2+, Fe3+, Co2+, Ni2+, Cu2+, Hg2+, Mo(VI), U(VI), Al3+, Cr3+ and Br-, less than 10-4M of Rh(III), Pt(IV), Zr(IV), Mn2+ and Sn4+, less than 5×10-6M of W(VI) and less than 10-6M of Sn2+ do not interfere with the analysis. By this procedure, palladium in catalyst for the clarifier of car waste gas was determined.

収録刊行物

  • 分析化学

    分析化学 27 (10), 668-671, 1978

    公益社団法人 日本分析化学会

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