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在原子吸收分析中,由于利用氢化物生成反应,大大提高了砷、锑、铋、碲、锡、铅、锗以及硒八个元素的测定灵敏度,国外使用氩氢焰和一氧化二氮-乙炔焰,进行锗的氢化物原子吸收法测定。在此基础上,我们采用磷酸钠为增感剂,结合氧屏蔽原子化方式对锗作了测定。实验部分 1.仪器:WFX-1A型原子吸收分光光度计;AHG-1型半自动氢化物装置。 2.试剂;锗(Ⅳ)标准溶液,10微克/毫升。硼氢化钾溶液5％(含氢氧化钾1.5％),用玻璃过滤漏斗抽滤。磷酸钠20％水溶液。
In the atomic absorption analysis, the determination sensitivity of arsenic, antimony, bismuth, tellurium, tin, lead, germanium and selenium is greatly increased due to the use of the hydride generation reaction. The use of argon hydrogen flame and nitrous oxide-acetylene Flame, Germanium hydride atomic absorption spectrometry. On this basis, we used sodium phosphate as sensitizer, combined with the oxygen shielding atomization of germanium was determined. Experimental part 1. Instrument: WFX-1A atomic absorption spectrophotometer; AHG-1 semi-automatic hydride device. 2. Reagents; Germanium (Ⅳ) standard solution, 10 μg / ml. 5% potassium borohydride solution (containing potassium hydroxide 1.5%), filtered with a glass filter funnel. 20% sodium phosphate aqueous solution.