- 作者: 許東明; 陳立樹
- 作者服務機構: Contribution from the Department of Chemistry, National Taiwan University, Taipei
- 中文摘要: The ionization constants of ferron (7-iodo-8-hydroxyquinoline-5-sulphonic acid) and the interaction between Th(IV) and ferron have been studied spectrophotometrically at 25℃ and ionic strength of 0.1. The ionization constants were found to be pK1=2.41±0.01, pK2=7.10±0.01. The Th(IV)-ferron chelate in aqueous solution of pH 5.0 exhibited a characteristic absorption maximum at 365mμ. The composition of Th(IV)-ferron chelate was 1:4 mole ratio of Th(IV) ion and ferron, and the stability constant (Log K8) was 26.22±0.16.
- 英文摘要: --
- 中文關鍵字: --
- 英文關鍵字: --