纯锑中杂质含量的光谱定量分析

本文讨论用光谱定量分析法来测定99.99％纯锑中各种杂质的含量。金属锑磨成粉状试样,渗入定量的待测金属盐后,再经逐次冲淡以制备一组标准试样。各个试样分别填在若干碳棒的小孔中,用蔡司Qu-24中型石英摄谱仪摄谱;每种试样及标准试样各摄五次于同一谱片上,利用渗入杂质法计算结果。最佳的激发光源为使用最长的曝光时间及间歇时间的间歇电弧。分析线对则按照通常方法选定。对钙、硅、镁、铜、铁、铝及铅等七种元素得到满意的分析结果,杂质含量范围为10^-5—10^-6。在粗略的估计下,

THE DETERMINATION OF IMPURITIES CONTAINED IN PURE ANTIMONY BY QUANTITATIVE SPECTRAL ANALYSIS

A quantitative spectral method is usod to determino the various impurities contained in the 99.99% pure antimony. The antimony metal is ground to powder form as sample. A cortain amount of chemical salt, one of its component is the impurity element to be determined, in the form of powder is added to the sample, to secure a series of standards by several times of dilution. All the samples and standards are placed in the respective craters drilled on carbon rods. Each sample is photographed for five times by a Zeiss Qu-24 medium size quartz spec-trograph in same spectral plate. The result is obtained by linear interpolation method. The interrupted arc with longest interrupted time and exposure time is found to be a suitable source.Several impurities, including Ca, Si, Mg, Cu Fe, Al and Pb are analysed successfully at sensitivities from 10^-5 to 10^-6. The experimental error is only estimated about 30-