【摘要】 <正> 用溶液进行分光光度法的定量测定已沿用了一个世纪,自从有了可靠的可调谐染料激光器,出现了一系列崭新的测量吸光度的方法,例如激光腔内吸收、热透镜、光声光谱方法等,这些方法使分光光度法的灵敏度及检测下限发生了飞跃。虽然这些高灵敏度的方法,在国外已作过许多深入研究,但是在国内该类工作报导的不多。由于可调谐染料激光器的稳定性不够,虽然有了很高的吸光度,但是可用的测定下限受更多还原

【Abstract】 The absorption of six rare earth elements-xylend orange chelate has been observed. The absorbances and molar absorptivity of the rare earth elements are compared with those obtained with a conventional spectropho-tometer. The result shows that the sensitivity of intracavity spectroscopy is about 1 order of magnitude higher than that of the conventional spect-rophotometric method.更多还原