Cd(Ⅱ) 폴라로그람의 異常波에 關한 硏究 = Anomalous Polarographic behavior of Cd(Ⅱ)

국문 초록 (Abstract)

pH 6.0∼12.0 範圍에서 0.15M 타르타르 酸鹽支持溶液 속에서 Cd(Ⅱ) Polarogram을 25℃에서 二段還元波를 調査한 결과 pH8.2部分 까지는 限界電流 및 半波電位값이 一定하며 한편 같은 濃度의 窒酸鹽 支持溶液을 사용하였을 때에 比하여 一段還元波의 半波電位값은 0.03volt 陰의 電位값으로 移動하고, 限界電流 값은 21% 減少되었다.
pH8.2 部分 以上부터 限界電流 값이 急激하게 增加하다가 pH8.9 以上부터는 다시 急激하게 減少하는 現象을 보여 주었다. 한편 pH8.2 以上부터는 半波電位가 pH11.0에서는 -1.37volt로 되었다. 可能한 電極反應을 假定하여, pH11.0에 이르기까지의 還元波移動의 原因을 檢討하였다.

다국어 초록 (Multilingual Abstract)

The second reduction waves of the polarogram of Cd(Ⅱ) in 0.15M sodium tartrate solution were investigated in the range of pH from 6.0 to 12.0 at 25 C. Up to pH 8.2, the limiting current and the half wave potential were found to be constant, and when compared with the nitrate solution equal to the concentration of sodium tartrate, the limiting current of the first reduction wave has been decrease 21% and the half wave potential of the first reduction wave shifted by -0.03 volt.
The values of limiting current were sharply increased above pH 8.2, and maximum value was obtained at pH 9.8.
The half wave potentials were gradually proceeded in negative direction with increasing pH and the half wave potential of -1.37 volt was obtained at the pH 11.0. Suggesting possible mechanisms of electrode reactions, the anomalous behavior of reduction waves of Cd(Ⅱ) in sodium tartrate solution up to pH 11.0 was discussed.

목차 (Table of Contents)

• Abstract
• Ⅰ. 序論
• Ⅱ. 實驗
• A. 裝置 및 試藥
• B. 實驗 方法
• 1. 試藥條件
• 2. 機器條件
• 3. 方法
• 4. D,K값 決定
• Ⅲ. 實驗 結果 및 考察
• A. pH에 따르는 半波電位값의 變化
• B. pH와 限界電流값의 變化
• C. Cd(Ⅱ) 폴라로그람에 미치는 타르타酸나트륨의 濃度의 영향
• D. Cd(Ⅱ)의 濃度와 1.8volt 以上에서 폴라로그람
• Ⅳ. 結論
• 參考文獻