| 沉淀分离富集-电感耦合等离子原子发射光谱测定土壤中可溶态稀土元素 |
| 摘要点击 639 全文点击 1358 投稿时间：1997-07-28 |
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| 中文关键词 可溶态稀土元素(SREEs) 土壤 沉淀分离富集 电感耦合等离子体原子发射光谱(ICP-AES) |
| 英文关键词 soluble rare earth elements(SREEs) soil coprecipitation and separation inductively coupled plasma-atomic emission spectrometry(ICP-AES) |
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| 中文摘要 |
| 研究电感耦合等离子体原子发射光谱(ICP-AES)测定土壤中微量可溶态稀土元素(SREEs)的方法。在适宜的pH=10-11条件下,以MgCl2为载体沉淀分离除去浸提液中的大部分基体杂质如Na+,Ac-,Ca2+,Mg2+等,有效地消除了这些杂质的干扰,提高了测定方法的准确度；同时,待测可溶态稀土元素被沉淀富集,样品中总稀土及各单一稀土加标回收率为88%-110%,样品测定结果满意,方法简便快速。 |
| 英文摘要 |
| A method was described for the determination of soluble rare earth elements(SREEs)in soils by inductively coupled plasma-atomic emission spectrometry(ICP-AES).Separation and preconcentration of SREEs from extraction solutions of soils were achieved with MgCl2 as a carrier at pH=10—11.The influences of pH and MgCl2 on SREEs recovery were investigated.Matrix components of Ca2+ ,Na+,Mg2+ and Ac- were removed to minimize interferences and improve sensitivities.The recoveries of SREEs are 88%—110%.Results of sample determination are satisfactory. |
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