• 作者： 林淑惠；賴再得
• 作者服務機構： 國立臺灣工業技術學院化工系; 國立成功大學化工系
• 中文摘要： 本文係利用極譜儀研究苯三甲酸溶液中，鈾醯離子在滴汞陰極之還原情形。並利用導電滴定確定鈾醯-苯三甲酸錯化物之組成。 研究範圍為溫度25.0±0.1°C，酸度pH 2.25至6.0，配位劑濃度9.714至36.93 mM。 溶液中錯化物之組成因pH值和配位劑濃度之改變而不同，配位劑濃度為9.714 mM時，兩種錯化物UO2(HA)24-和UO2A24-分別存在於pH 2.4?3.90和3.90?5.4之問，當配位劑濃度提高至36.93 mM時，二錯化物分別存在於pH 2.4?3.75和3.75?5.6之間。 由Ilkovic Equation導出一組聯立方程式，藉之解得鈾化物之擴散係數及穩定常數。
• 英文摘要： The uranyl ion in trimellitic acid (TMA) solution has been investigated by polarography. The constitution of chelate species was confirmed by conductometric titration. Experimental conditions: Temperature 25?.1蚓, pH 2.25-5.6, ligand concentration 9.714-36.93 mM. At ligand concentration 9.714 mM, two chelate species UO2(HA)24- and UO2A24- exist between pH 2.40-3.90 and pH 3.90-5.40, respectively. With increasing ligand concentration to 36.93 mM, these two species exist between pH 2.40-3.75 and 3.75-5.60. The difussion coefficients and stability constants of complex species were determined by deducing instantaneous equations from Ilkovic Equations.
• 中文關鍵字： --
• 英文關鍵字： --