摘要
探讨了电感耦合等离子体原子发射光谱法(ICP-AES)测定锆及锆合金中钛的条件并建立了测定方法。采用盐酸、氢氟酸和硝酸溶解试样,选择波长339.4nm(样品不含铌时)和338.3nm(样品含铌时)的谱线作为钛分析线,在选定的仪器工作条件下对试液中钛进行测定。锡、铁、铬、镍对钛的测定无影响,基体元素锆和合金元素铌对钛测定的影响可以分别采用基体匹配和选择不同波长谱线作为钛分析线的方法克服。在选定的仪器工作条件下,对锆及锆合金试样中钛含量进行多次测定,结果与分光光度法(GB/T13747.1992)、直流电弧原子发射光谱法的测定结果基本一致,相对标准偏差(n=9)均小于15%。方法的精密度和准确度均满足科研生产的检测要求。
The conditions for the determination of titanium in zirconium and zirconium alloys by inductively coupled plasma atomic emission spectrometry （ICP-AES） was explored and the determination method was established.Hydrochloric acid,hydrofluoric acid and nitric acid were selected to dissolve the sample,the spectral lines of wavelength 339.4 nm （without niobium in the sample） or 338.3 nm （with niobium in the sample） were used as the analytical lines for titanium,and under the selected operating conditions of the instrument,titanium in the analyte solution was measured.Tin,iron,chromium and nickel didn＇t affect the determination of titanium.The impact of the matrix element zirconium and the alloy element niobium on the determination of titanium could be removed by matrix matching and the selection of a different wavelength spectral line as the analytical line for titanium.Under the selected working conditions of the instruments,the content of titanium in zirconium and zirconium alloy samples was measured several times,and the results were consistent with those obtained by the spectrophotometry （GB / T13747.1992） and direct-current arc atomic emission spectrometry,the relative standard deviation （n =9） being less than 15％.Both the precision and accuracy of the method could meet the testing requirements in research and production.
出处
《冶金分析》
CAS
CSCD
北大核心
2014年第1期63-66,共4页
Metallurgical Analysis
