摘要
试样采用在加入的硫酸冒烟过程中缓慢滴加硝酸消解,再以王水溶解金的湿法处理方式,采用火焰原子吸收光谱法测定吸附树脂中的金。实验结果表明:在硫酸冒烟过程中,硝酸可以消解试样中的有机物,使试样中的金能完全溶出;其测试结果与火试金法及灼烧灰化—火焰原子吸收光谱法一致,相对标准偏差小于0.5%,加入标准物质回收率大于99%。
The sample is treated by slow addition nitric acid for digestion during the smoking process of added sulfuric acid before gold dissolution by aqua regia and then gold in adsorption resin is determined by flame atomic ab-sorption spectrographic（ AAS） method.Tests show that during the smoking process of added sulfuric acid,the organic matter in the sample is digested by nitric acid so that the gold in the sample can be dissolved completely.Test results are consistent with fire assay and burning-AAS method.Relative standard deviation is less than 0.5%,added stand-ard material recovery is greater than 99 %.
出处
《黄金》
CAS
2015年第3期79-81,共3页
Gold
关键词
湿法处理
吸附树脂
金
火焰原子吸收光谱法
wet treatment
adsorption resin
gold
flame atomic absorption spectrographic method
