【摘要】 通过对氧化锑试样分解方法、硅磷分析线选择、共存元素光谱干扰和仪器最佳分析条件等方面的研究,建立了电感耦合等离子体原子发射光谱法测定氧化锑中硅和磷的方法。选用谱线Si 251.611 nm,P 214.914 nm作分析线,避免了基体元素对硅、磷的干扰。在优化的实验条件下,当硅磷的含量在0.01~300 mg/L范围内时,其吸光度与硅磷浓度呈良好的线性关系,方法的检出限为Si 0.04 mg/L,P 0.07 mg/L。对4个样品的硅和磷进行测定,回收率分别为95.82%~107.12%和93.47%~98.52%,相对标准偏差(n=10)分别为0.6%~3.4%和0.8%~4.8%。更多还原

【Abstract】 A method for the determination of silicon and phosphorus in antimony oxide by inductively coupled plasma emission spectrometry(ICP-AES) was reported.The sample dissolution methods,selection of spectral lines,interference of coexistent elements and the working parameters of the instrument were studied.Spectral line 214.914 nm for P and 251.611 nm for Si were selected,and the interferences from matrix were avoided. The method showed a satisfactory results when antimony oxide samples were determined.The linear calibration curve range of P and Si was obtained within 0.01-300 mg/L,and the detection limits were obtained to be 0.07 μg/mL and 0.04 μg/mL respectively.The method was applied to the determination of Si and P in four samples with the recovery of 95.82%-107.12% for Si and 93.47%-98.52% for P,and the relative standard deviation of 0.6%-3.4% for Si and 0.8%-4.8% for P respectively.更多还原