水中の微量鉄(II)イオンのイオン会合体としての電極分離型水晶発振子への付着挙動

概要

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Neutral precipitates were adsorbed on the quartz plate of an electrode-separated piezoelectric quartz crystal (electrode-separated PQC), causing a frequency change. A trace amount of iron (II) in aqueous solution reacted with 4,7-diphenyl-1,10-phenan-thorolinedisulfonate to form an anionic complex at pH 2.5〜5.6. The adsorption behavior of the associated ion pair formed with the complex and benzyldimethyltetra-decylammonium ion adsorbed on the quartz plate of an electrode-separated PQC and shifted the frequency. The frequency change of the electrode-separated PQC resulting from the adsorption of the precipitate depended on the pH, flow rate, and concentration of the complexing reagent and the counter ion. A linear calibration curve was obtained over the range 50-500 nM Fe (II).
社団法人日本分析化学会の論文
1997-01-05