电感耦合等离子体光谱/质谱联机同时测定多金属结核中常量、微量、痕量元素

采用电感耦合等离子体质谱(ICP-MS)与等离子体光谱(ICP-OES)联机同时测定多金属结核样品中常量、微量、痕量元素。样品经高压密封溶样弹消解后，一次气动雾化进样，ICP-OES测定常量和微量元素，ICP-MS测定微量和痕量元素。详细探讨了不同浓度范围元素的测定方式、元素分析信号的采集模式、多原子离子干扰的校正因子。采用ICP-MS与ICP-OES二种方式同时测定Co、Cu、Ni、Zn、V、Ba、Sr，分析结果表明具有较好的一致性。所建立的ICP-MS与ICP-OES联机检测技术用于多金属结核标准样品的分析(Nod-A-1，GSPN-1，GSPN-2，GSPN-3)，分析结果与推荐值符合，相对标准偏差小于10％。

Simultaneous Determination of Major-to-Ultratrace Elements in the Oceanic Polymetallic Nodules Materials by Inductively Coupled Plasma Mass Spectrometry Combined with Inductively Coupled Plasma Optical Emission Spectrometry

Multielement determination of major-to-ultratrace elements in the oceanic polymetallic nodules references materials by inductively coupled plasma mass spectrometry (ICP-MS)combined with inductively coupled plasma optical emission spectrometry (ICP-OES) was developed. The sample was decomposed with nitric acid and hydrofluoric acid in polytetrafluoroethylene (PTFE) screw-top bomb. The major and miner elements were determined by ICP-OES and the miner and trace elements by ICP-MS. The optimum analytical procedure and mass acquisition mode were selected for different elements in the range of different concentration. The interference correction coefficients were determined for the correction of the polyatomic ions interference. The miner elements including Co, Cu, Ni, Zn, V, Ba, Sr were determined by ICP-MS and ICP-OES, The proposed method has been applied to the analysis of polymetallic nodules references materials (Nod-A-1, GSPN-1 , GSPN-2, GSPN-3), and the analytical results were in good agreement with the reference values and the relative standard deviations between this work and the recommended values were less than 10%.