ICP-AES法测定钴基合金中La、Mg元素的含量  

Determination of La,Mg in Co-based alloys by inductively coupled plasma atomic emission spectrometry

作　　者：高颂[1] 庞晓辉[1] 许维兵[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《分析仪器》2014年第2期77-80,共4页Analytical Instrumentation

摘　　要：研究了钴基合金样品的溶解方法，采用盐酸、硝酸、氢氟酸溶解，使用微波消解溶解方法，控制试剂用量，降低了空白；考察了基体和主量元素对待测元素的影响，选择待测元素灵敏度高、光谱干扰少的谱线 La 408.672nm、Mg 279.553nm为分析线，校准曲线溶液采用基体匹配消除了基体效应影响，实现了用电感耦合等离子体原子发射光谱法测定钴基合金中La、Mg元素含量，方法的检出限可达0.002μg/mL ，进行了标准物质对照试验，与标准值相符，进行了加入回收试验，回收率90～99％，RSD＜4％。A method for determination of principal elements lanthanum and magnesium in Co-based al-loys by inductively coupled plasma atomic emission spectrometry is proposed .In this method ,the micro-wave digestion is used to reduce the background .Matrix-matching method is used to eliminated spectral interference .The experiments of instrument parameters ,sample dissolution ,selection of analysis lines , and the effect of matrix on the determination ,and the comparison of reference materials and the analytical results are carried out .T he recovery rate is at the range of 90%-99% ,RSD≤4% .

关 键 词：电感耦合等离子体原子发射光谱法 钴基合金 

分 类 号：TG115[金属学及工艺—物理冶金]