| 萃取色谱分离偶氮氯膦-mN光度法测定矿石中铈 |
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| 引用本文： | 叶年咏.萃取色谱分离偶氮氯膦-mN光度法测定矿石中铈[J].岩石矿物学杂志,1983,2(3):224-225. |
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| 作者姓名： | 叶年咏 |
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| 作者单位： | 广东省地质局第九实验室 |
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| 摘 要： | 本文提出以P_(507)为固定相,盐酸为流动相的萃取色谱法把铈从溶液中分离出来,以偶氮氯瞵-mN与铈的高灵敏显色反应进行比色。本法灵敏度ε=7.8×10~4。实验部分色谱柱:φ8×120m/m 硅烷化硅球100—120目(上试一厂出品) P_(507)(上海有机化学所实验工厂) 偶氮氯膦-mN0.05%水溶液杂质洗除液:5%NH_4Cl,2%磺基水杨酸,1%抗坏血酸,调至pH2—3 铈、镧、镨标准液:用光谱纯的氧化铈、氧化镧、氧
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Spectrophotometric Determination of Cerium in Minerals and Rocks with Chlorophosphonazo-mN by the Separation of Extraction Chromatography |
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| Abstract: | A new column extraction chromatographic method with p507 as stationary
phase, silicon-treated porous silica-gel bead as carrier and dilute hydrochloric
acid as a mobile phase is suggested for the separation of cerium from minerals
arid rocks. By using oxalic acid, sodium pyrophosphate and phosphoric acid as
masking agents, for other elements cerium were determined with chlorophos-
phonazo-mN. More than twenty kinds of foreign ions of 5 mg do not interfere
in the determination. |
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