Applications of the fluoride-sensitive electrode to the study of metal-fluoride ion association constants
作者:A. Aziz、S.J. Lyle
DOI:10.1016/s0003-2670(01)81804-3
日期:1969.8
the measurement of metal-fluoride ion association in aqueous solutions of constant ionic strength, with a calomel reference electrode and sodium chloride salt bridge. Measurements were made with magnesium, calcium, scandium, iron(III), europium(III) and gadolinium ions at 25°; yttrium and “protonation” of [F - ] were studied at 15, 25 and 35° and enthalpy and entropy changes calculated. The electrode
摘要 使用甘汞参比电极和氯化钠盐桥对“Orion”氟化物敏感膜电极进行了严格检查,用于测量恒定离子强度水溶液中的金属-氟化物离子缔合。用镁、钙、钪、铁 (III)、铕 (III) 和钆离子在 25° 下进行测量;[F - ] 的钇和“质子化”在 15、25 和 35° 进行了研究,并计算了焓和熵的变化。电极限于10 -6 M 或更大的游离[F - ] aq 溶液,因此将第一缔合常数的大小限制为≤10 6 。大多数金属氟化物盐的不溶解性带来了进一步的限制。该电极不如铁 (III)-铁 (II) 电极系统灵敏,但方便得多。