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岩石中微量铀的测定多用分光光度法、极谱法或荧光法,发射光谱法测定岩石中微克量铀尚未见成熟的方法。感耦等离子体(ICP)光源的应用,使原子发射光谱定量分析取得了很大进展。但是,垂直放置炬管的 ICP 对铀的捡出限仍然较差,难以用于岩石中微克量级铀的测定。郭玉生等试验水平放置炬管的 ICP—AES 测定岩石中微量铀钍,对铀的捡出限达0.01微克/毫升,但测定岩石中的微量铀仍有线背比较小,结果精密度欠佳
Determination of trace uranium rock more spectrophotometry, polarography or fluorescence, emission spectrometry determination of uranium in the rock has not yet matured method. The application of inductively coupled plasma (ICP) light source has made great progress in the quantitative analysis of atomic emission spectrometry. However, ICP for uranium tubes placed vertically is still poorly available for the detection of uranium and can not be used for the determination of micrograms of uranium in rocks. Guo Yu-sheng and other test levels placed torch ICP-AES Determination of trace uranium thorium rock, the detection limit of uranium 0.01μg / ml, but the determination of trace amounts of uranium in rock still line back is relatively small, the results of poor precision