摘要
以基体匹配消除基体光谱干扰，采用ICP—AES法测定钕铁硼废料中非稀土杂质。通过共存元素的干扰实验，选择无干扰或干扰可忽略不计的谱线为最佳分析波长。考察基体量对测定的影响情况，选择受基体量影响较小的分析波长，以保证当基体量发生较大变化时，待测元素的分析波长具有较广泛的适用性。测定范围：铬、镁、锰0．0050％～0．50％，钙、镍、硅0．010％～1．00％，镓0．020％～0．50％，钴0．020％～5．00％，硼、铜0．050％～1．00％，铝、钛0．10％～1．00％，RSD为0．81％～8．89％。建立的方法与不同方法进行对照实验，测定结果与对照值吻合，具有测定含量范围宽、分析简便快速、结果准确等优点。
Non - rare earth impurities in NdFeB waste were determined by ICP - AES method. The matrix spectral inter- ference was eliminated by matrix matching. Interference experiments were done within coexisting elements to choose the best a- nalysis wavelength. The amount of matrix experiments were done to choose the analysis wavelength less influenced by the a- mount of matrix. The analysis wavelength has broader applicability when the amount of matrix changed greatly. The measure- ment range is 0. 0050 -0. 50% for Cr,Mg,Mn,0. 010 - 1.00% for Si,0. 020 -0. 50% for Ga,0. 020 -5.00% for Co,0. 050 - 1.00 for B,Cu and0. 10 - 1.00% for A1,Ti. The RSD is 0. 81% to 7. 1%. The results were in agreetment with control val- ues compared with other methods. The method is simple, rapid and accurate to meet the analytical requirement for determina- tion of non - rare earth impurities in NdFeB waste.
出处
《稀土》
EI
CAS
CSCD
北大核心
2013年第6期51-55,共5页
Chinese Rare Earths
基金
环保部公益性行业科研专项(20110949)
关键词
钕铁硼废料
非稀土杂质
ICP—AES法
non - rare earth impurities
NdFeB waste
indutively coupled plasma - atomic emission spectrometry
