电感耦合等离子体原子发射光谱法测定硅铝钡锶合金中锶  

Determination of strontium in silicon-aluminum-barium-stronium alloy by inductively coupled plasma atomic emission spectrometry

作　　者：门生会 

机构地区：[1]河北钢铁集团宣钢公司,河北宣化075100

出　　处：《冶金分析》2014年第3期69-72,共4页Metallurgical Analysis

摘　　要：探讨了用电感耦合等离子体原子发射光谱法（ICP—AES）测定硅铝钡锶合金中锶元素的分析条件并建立了测定方法。样品用盐酸、硝酸和氢氟酸溶解，硼酸除氟，试液经过滤后，选择强度较大、峰形较好、干扰小和稳定性好的421．5nm谱线作为分析线进行测定。结果表明，锶浓度在0．001～0．025mg／mL范围内线性关系良好，线性方程为I=11551．75ρ＋72706384，相关系数R2=0．9999。对硅铝钡锶合金标准样品进行测定，锶的测定值与认定值基本一致。硅铝钡锶合金实际样品中锶测定结果的相对标准偏差（n=10）为0．067％，加标回收率为106％。The condition and method for determination of strontium in silicon-aluminum-barium-stronti- um alloy was established by inductively coupled plasma atomic emission spectrometry （ICP-AES）. The sample was dissolved with hydrochloric acid, nitric acid and hydrofluoric acid, then boric acid was used to dispel fluoride. After the test solution was filtered, 421.5 nm was chosen as the analytical line to carry out the determination because it had the advantage of large spectral intensity, good peak shape, small interference and good stability. The results showed that the concentration of strontium in the range of 0. 001-0. 025 mg/mL established a linear relationship with linear equation of I = 11 551. 75ρ＋72 706 384 and correlation coefficient R2 =0. 999 9. When the proposed method was ap- plied to determination of strontium in certified reference materials of silicon-aluminum-barium-stronti- um alloy, the results were consistent with the certified values. The relative standard deviation for de- termination of strontium in silicon-aluminum-barium-strontium alloy actual samples was 0. 067% and the recovery was 106%.

关 键 词：酸溶解 电感耦合等离子体原子发射光谱法(ICP—AES) 硅铝钡锶合金 锶 

分 类 号：TG141[一般工业技术—材料科学与工程] O657.31[金属学及工艺—金属材料]