界面活性剤分散/直接高温炉原子吸光法による硫化物触媒中の鉄の定量

概要

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Thirty or more kinds of surfactants were investigated as the dispersing agents. MoS_2/Al_2O_3 catalyst samples were suspended uniformly into an aqueous solution containing triethanolamine/nonylphenylpolyoxyether. A 10 μl volume of the sample solution was dropped onto a W-strip heater with an Eppendorf pipette, dried, ashed and atomized in the presence of H_2/Ar purge gas. The unifomity of suspeded powder samples was checked by the determination of Fe in three kinds of test solutions taken from upper, middle and lower positions in a test tube. The three values coincided each other. A good agreement was observed between the analytical result obtained by the proposed method and that obtained as the total amout of aqua regia soluble and insoluble components.
社団法人日本分析化学会の論文
1989-08-05