以PMBP为萃取剂和化学改进剂/电热蒸发电感耦合等离子体原子发射光谱测定二氧化锆中痕量铕

Determination of Trace Europium in Zirconium Dioxide by Electrothermal Vaporization Inductively Coupled Plasma -Atomic Emission Spectrometry With 1-Phenyl -3-methyl -4-benzoyl -pyrazone [5] as Extractant and Chemical Modifier

提出了用β－二酮类试剂１－苯基－３－甲基－４苯甲酰基－吡唑酮［５］（ＰＭＢＰ）为萃取剂和 化学改进剂的电热蒸发电感耦合等离子体原子发射光谱（ＥＴＶ—ＩＣＰ—ＡＥＳ）测定高纯ＺｒＯ２ 中痕量Ｅｕ的新方法。讨论了影响Ｅｕ－ＰＭＢＰ 螯合物蒸发的主要因素。在优化实验条件下，Ｅｕ 的检出限为０．９μｇ／Ｌ，相对标准偏差为３．４％，试样分析的回收率为９４．５％～１０５．２％．

Based on the formation of volatile metal chelate between metal ion and β-diketone reagent , a new method is reported for the determination of trace europium in high purity zirconium dioxide by electrothermal vaporization-inductively coupled plasma-atomic emission spectrometry (ETV-ICP-AES) with l-phenyl-3-methyl-4-benzoyl (5) (PMBP) as extractant for removal of Zr matrix and chemical modifier for the determination of Eu. The vaporization behavior, effect factors and analytical characteristics of above determined element were investigated in detail. Under optimized experimental conditions, the detection limit, relative standard deviation, and recovery are 0. 9 μg/L, 3. 4% (C=0. 5 mg/L, V = 10 μL, n = 7) and 94. 5%-105. 2%, respectively. The linear range of the proposed method covers three orders of magnitude. The method has been applied for analysis of real sample, and the results are satisfactory.