電気透析試料調製器

概要

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An electrodialytic apparatus for sample preparation in analytical process was developed. Apparatus I (for extraction of low molecular cationic substances) : This is composed of 4 parts-anode vessel (A), sample chamber (B), extraction chamber ( C), and cathode vessel (D) in series. On both sides of B, cellulose membranes are placed, and at the boundary of C and D, an anion-exchange membrane (A-201. Asahikasei Chemical Industry Co. Ltd.) is set up. Apparatus II (for extraction of low molecular anionic substances) : This is composed of A, C, B and D. A cation-ex-change membrane (K-101) is used at the boundary of A and C, and cellulose membranes are on both sides of B. In apparatrs 1, 0.5ppm solution of Cu(II) or Zn(II) in 0.05 N CH_3COOH was placed in B and the other cells were filled with 0.05 N CH_3COOH. Electrodialysis was carried out with the current of 10mA/cm^2 for 20 min. The concentrations of Cu(II) and Zn (II) in C were determined by atomic absorption spectrometry and the recoveries of them were about 80 and 90% respectively. In apparatus II, 0.5ppm solution of Cu (II) or Zn(II) was electrodialyzed as EDTA complexes. The condition was as follows: 0.05 N NH_4OH-1mM EDTA, 10mA/cm^2 20min. The recoveries of Cu(II) and Zn(II) were almost 100%.
社団法人日本分析化学会の論文
1979-01-05