@article{oai:soar-ir.repo.nii.ac.jp:00019838,
 author = {中村, 亮太 and 樋上, 照男},
 issue = {3},
 journal = {BUNSEKI KAGAKU},
 month = {Mar},
 note = {本研究では液液界面が隔膜によって縦に仕切られる構造をもつ液液界面フロー電解セルを作製した．この電解セルの性能を評価するために，イオノフォアとして3種のクラウン化合物（12-クラウン-4，15-クラウン-5，ジベンゾ18-クラウン-6）を用い，電解セル中の1,2-ジクロロエタン/隔膜/水界面におけるアルカリ金属イオン（Li＋，Na＋，K＋，Rb＋，Cs＋）及びアルカリ土類金属イオン（Ca2＋，Sr2＋，Ba2＋）の促進イオン移動ボルタモグラムを測定した．この測定結果をもとに，電解セルの隔膜などの改良を行うとともにアンペロメトリーの条件（流量，印加電位）の最適化を行った．一方，測定したボルタモグラムから定量におけるアルカリ金属及びアルカリ土類金属イオンの選択性を決定した．これをもとに，12-クラウン-4を用いる醤油中のΝa＋の定量を試み，再現性のよい定量値を得た．作製した液液界面フロー電解セルは分解や組立が容易であり，この電解セルを用いるアンペロメトリーがイオンの定量に有用であることが示された． / In this work, a flow electrolytic cell for ion transfer across a DCE/W interface was manufactured from a block of Daiflon (Polychlorotrifluoroethylene resin). The cell was compact, and had a structure in which the DCE and W phases were separated by a membrane. To evaluate the cell performance, voltammograms of the promoted ion transfer of alkali and alkaline earth metal ions were measured. As ionophores for the ion transfer, 12-crown-4, 15-crown-5 and dibenzo-18-crown-6 were employed. Based on the measurements, the cell was improved, and various parameters (flow rate and the potential added) for amperometry were optimized. Two membranes separating the DCE and W phases, the cellulose dialysis membrane and the PTFE (polytetrafluoroethylene) hydrophilic membrane filter were tested. When the dialysis membrane was used, ion-transfer occurred in the dialysis membrane at the DCE/dialysis membrane/W interface. On the other hand, when the membrane filter was used, ion-transfer occurred in the W phase in the vicinity of the DCE/membrane filter/W interface. In practice, since the membrane filter was chemically resistant to DCE and mechanically stronger than the dialysis membrane, flow-injection amperometry was carried out with the membrane filter. Subsequently, the selectivity among the alkali and alkaline earth metal ions was examined. As a result, it was confilined that Na+ could be selectively detected when 12C4 was employed. Based on this result, Na+ in soy sauce was determined. The determination value was 2.99 +/- 0.14 mol dm(-3) (n = 4). The value of 2.99 mol dm(-3) was in agreement with the certified value of 2.80 mol dm(-3) within the 95 %-confidence limit. The relative standard deviation was 4.7 %, which shows a reasonable reproducibility of this determination method using the electrolytic cell. The flow electrolytic cell manufactured in this work is easily handled, and can be used in actual analyses of various ions in the aid of flow injection amperometry., Article, BUNSEKI KAGAKU. 65(3):129-136 (2016)},
 pages = {129--136},
 title = {液液界面フロー電解セルの作製と評価 : アルカリ金属及びアルカリ土類金属イオンの促進イオン移動の検討},
 volume = {65},
 year = {2016}
}