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本工作利用多接收电感耦合等离子体质谱对硒的同位素丰度进行了分析,建立了在缺少硒同位素标准的情况下,利用天然溴做内标,准确进行硒同位素比值分析的方法。称取少量高纯硒粒样品于50mL石英烧杯中,加入10mL浓HNO3,放在电炉上加热溶解。溶液的颜色先由无色变为棕黄色,之后又变为无色。待样品完全溶解后,将石英烧杯从电炉上取下,
In this work, the isotopic abundance of selenium was analyzed by multi-receiver inductively coupled plasma mass spectrometry (LC-MS / MS), and the method for accurate determination of selenium isotope ratio using natural bromine in the absence of selenium isotope was established. Weigh a small amount of high-purity selenium grain samples in 50mL quartz beaker, add 10mL HNO3 concentrated, placed on the furnace heated to dissolve. The color of the solution changed from colorless to brown first and then to colorless again. After the sample is completely dissolved, the quartz beaker is removed from the electric furnace,