论文部分内容阅读
本文在文献[1、2]的基础上研究了石墨炉原子吸收法测定锗的条件,试验了一些金属盐类对测定锗的影响,用氯化钡除去大量的硫酸根离子,苯萃取四氯化锗,水反萃取以分离干扰元素,以镍-草酸铵-氢氧化铵为基体改进剂。可用于测定矿石中0.Xppm的锗。石墨炉原子吸收测定绝对灵敏度为8.8×10~(-12)g/1％吸收,含锗0.94ppm的样品,重复测定11次相对标准偏差为3.9％。 实验部分 一、仪器和试剂 P-E5000型原子吸收分光光度计,HGA-500石墨炉,PRS-10打印机,AS-1自动进样器,进样体积为20微升,锗空心阴极灯
Based on the literature [1,2], the conditions of germanium determination by graphite furnace atomic absorption spectrometry were studied. The effects of some metal salts on the determination of germanium were studied. A large amount of sulfate ions were removed by barium chloride. Germanium, water back extraction to separate interference elements to nickel - ammonium oxalate - ammonium hydroxide as a matrix modifier. It can be used to determine 0.Xppm germanium in ore. Graphite furnace atomic absorption measurement absolute sensitivity of 8.8 × 10 ~ (-12) g / 1% absorption, containing 0.94ppm germanium samples, repeated determination of 11 times the relative standard deviation of 3.9%. Experimental Part I. Instruments and reagents P-E5000 atomic absorption spectrophotometer, HGA-500 graphite furnace, PRS-10 printer, AS-1 autosampler, injection volume of 20 microliters, germanium hollow cathode lamp