- 作者: 潘貫; 林瑞[木逢]; 吳玉麟
- 作者服務機構: Contribution from Department of Chemistry, National Taiwan University
- 中文摘要: Pyrogallolsulfonephthalein (abbreviated to PR) and its thorium chelate was spectrophotometrically studied in perchloric acid and perchlorate solution at various pH's. PR shows an absorption maximum at 478 mμ at pH 3.0, which in the presence of thorium (IV) ion shifts to 544 mμ. The optimum pH for the formation of the chelate was found to be 2.7 to 3.2 and the mole ratio of Th(IV) to PR was 1:1. the instability constant was found to be 1.40×10.. at ionic strength, μ=0.01.
- 英文摘要: --
- 中文關鍵字: --
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