稀土离子电子振动光谱高灵敏检测技术——稀溶液中氨基酸与稀土的配位研究

Ultrasensitive Detection for Vibronic Spectroscopy of Rare Earth Ions Study on Coordination of Terbium with Aminoacid in Low Concentration Solutions

叙述了稀土离子电子振动光谱的时间分辨高灵敏检测技术，并利用该技术研究了铽离子与精氨酸在稀溶液中的配位，定量地确定了水配位随溶液ｐＨ值的改变而发生的变化。结果表明，当ｐＨ＞１时，精氨酸可以参与铽离子配位，随着ｐＨ值的增加配位逐渐加强。

A time resovled ultrasensitive detection technique of probing cooperative vibronic spectra of rare earth ions is described. Coordination of terbium ion with arginine in low concentration solutions is studied and the coordination number variation of water molecules with pH value in these solutions is determined quantitatively with this technique. It is concluded that arginine can coordinate with terbium ion when pH>1, with the pH value of the solutions increasing, the coordination number of arginine increases.