摘要
本文对结晶紫—贵金属—氯化亚锡体系沉淀形成的研究结果表明:在0.6mol/L HCl—0.15mol/L SnCl_2—1.4×10^(-3)mol/L CV的体系中,15.4～604.0μg铑、16.1～535.0μg钯、15.4～738.0μg铱、15.7～792.0μg铂、15.4～664.0μg金可以从40ml试液中同时定量沉淀。回收率依次为％:91.6～100.7、90.0～98.1、92.5～98.1、95.7～101.2、93.4～101.9。所拟定的方法用于精矿、阳极泥、选冶中间产品、废催化剂等μg级上述元素分析时,相对标准偏差在(4～7)％以内。
A precipitation system of crystal violet—precious metals—tin(Ⅱ) chloride and its application orf enrichment and separation of rhodium, palladium, iridium, platinum and gold are investigated. The experimental results as follows: 15.4～604.0 μg Rh, 16.11～535.0 μg Pd, 15.4～738.0 μg Ir, 15.7～792.0 μg Pt, and 15.4～664.9 μg Au in a 40 ml sample solution can be quantitatively precipitated. The recoveries are (％): 91.6～100.7, 90.8～98.1, 92.5～98.1, 95.7～101.2, 93.4～101.9, for Rh, Pd, Ir, Pt, and Au respectively. The procedure is suggested to analysis the above elements in some samples, such as ores, benification and metallurgical products, wasted catalysts. They are determined by inductively coupled plasma—atomic emmssion spectrometry (ICP—AES) or by flame atomic absorption spectrometry (FAAS), and the relative standard derivations are 4.0, 5.5, 4.0, 7.0, 7.0％ for Rh, Pd, Ir, Pt and Au respectively.
出处
《贵金属》
CAS
CSCD
北大核心
1992年第3期53-57,共5页
Precious Metals
关键词
贵金属
沉淀
结晶紫
痕量金属分析
Precious Metals, Precipitation, Crystal violet, Trace metal analysis
