蒸発濃縮,原子吸光法による酸中の微量金属不純物の分析

概要

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For the determination of trace metal impurities in acids, an evaporator was specially designed so as to avoid contamination from atomospheric environment in concentrating procedure. The analytical procedurc established is as follows. Take (100〜200) ml of acid sample in a quartz or Teflon beaker which is set in the evaporator (Fig. 1). Heat gently and evaporate the solution to almost dryness. After cooling, dissolve the residue in 1 ml of 3 N hydrochloric acid and dilute to 10 ml with water. Then the solution is introduced into a premix type slot burner. Measurements were made with a Hitachi model 308 atomic absorption spectrophotometer, using airacetylene flame. The proposed method is applicable to thc determination of metal impurities of ppb order in acids.
社団法人日本分析化学会の論文
1976-03-10