分子光谱法测定镧的研究进展

Progress of molecular spectrometric determination of lanthanum

对1990-2014年间分子光谱法测定镧的国内外研究进行了综述。具体内容包括:普通光度法、动力学光度法、荧光光度法、化学发光法和计算光度法。其中普通光度法是目前应用最为广泛的方法,偶氮胂和偶氮氯膦是最常用的显色剂,同时新显色剂如二溴氟基偶氮甲胂(5-MasA-DBF)等的研究也在不断增加。而动力学光度法和荧光光度法因其灵敏度高,相应体系也在逐渐增多。化学发光法具有线性范围宽的优点,相应研究也会不断增加。对每种分析方法从测定体系、测定条件、灵敏度以及实际应用等方面进行归纳和分析。

The researches on the determination of lanthanum by molecular spectrometry during 1990--2014 at home and abroad were reviewed, including ordinary photometry, kinetic photometry, fluorescence photometry, chemiluminescence photometry and calculation photometry. Ordinary photometry is currently the most popular method. Arsenazo（Ⅲ） and Chlorophosphonazo are the most common chromogenic reagents, in the meanwhile, more studies on novel chromogenic reagents such as 5-MasA-DBF are conducted. The systems of kinetic photometry and fluorescence photometry are increasing, too, because both have high sensitivity. The linear range of chemiluminescence photometry is wide, so the corresponding research also springs up. All these analysis methods are summarized and analyzed from the perspectives of systems, conditions, sensitivity as well as practical application, etc.