摘要
用HCl-KClO4-HNO3溶解试样,在10%的氨水介质中,用火焰原子吸收光谱仪于波长328.1nm处,以空气-乙炔火焰测定铜精粉中的银量,克服了酸性体系中测定不稳定的缺点。用铜精粉国家标准物质分析验证,测定结果与标值吻合。方法精密度为2.0%～4.1%,方法检出限为1.3ug/g。方法分析快速简单,易于掌握。
In this paper, a method for the determination of silver in lead concentrate Copper sample by flame atomic absorption spectrometry was developed.The sample was dissolved with HCl-NH4HFz-HNO3-KClO4 and in the medium of 10% NH3H2O, Ag in the sample solution was determined by air-acetylene flame atomic absorption spectrometer at wavelength of 328. lnm.Sampledigestion condition and instrument operation parameters were alsostudied and optimized.The detection of limit was 1.3ug/g for Ag The reliability of the method has been tested by determination of Ag in national standard reference lead concentrate Copper sample（GBW07265）and the result is in agreement with certified value with precision of 2.0%-4. 1%RSD（n=12）.The method provides the advantantages of high efficiency and simple operation.
出处
《化工矿产地质》
CAS
2011年第3期185-188,共4页
Geology of Chemical Minerals
