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 %.
参考文献
| [1] | 贺仕军.PVC-尼龙6树脂分离富集TMK光度法测定金的改进及应用[J].湖南有色金属,2009(01):45-48. |
| [2] | 李小玲.火试金法测定树脂中的金[J].黄金,2010(04):54-55. |
| [3] | 杨平平,田新娟,李波,孙宝莲.灼烧法与硝酸-高氯酸法处理火焰原子吸收光谱法测定树脂中金[J].冶金分析,2013(06):23-26. |
| [4] | 甘建壮,管有祥,李楷中,李玲.火试金法测定金锡合金中金含量[J].贵金属,2008(04):34-36. |
| [5] | 董守安.贵金属的精密库仑滴定分析I--金的钝度测定[J].分析试验室,1991(05):19. |
| [6] | 符永际.分光光度法测定化探样品中的金[J].黄金,2010(07):56-57. |
| [7] | 郑若锋.D201BR树脂分离富集火焰原子吸收法测定镍阳极泥中的金、铂、钯[J].湿法冶金,2001(03):161-164. |
| [8] | 杨丽飞,陈焱,马德起.改性木质素富集-电感耦合等离子体原子发射光谱法测定铜精矿中金铂钯[J].理化检验-化学分册,2011(03):339-341. |
| [9] | 李小红,储溱,张蕾,丁莹,方金东.泡沫塑料富集--电感耦合等离子体质谱法测定地质样品中痕量金[J].资源环境与工程,2006(03):329-331. |
| [10] | 张利,朱化雨,宋兴良.极谱络合吸附波测定痕量金的研究[J].理化检验-化学分册,2005(10):748-750. |
| [11] | 吴奕阳,叶晓珉,方名戌.波长色散X射线荧光光谱法测定纯金中金[J].理化检验-化学分册,2003(11):639-640. |
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