【摘要】 首次提出了微波密闭消解难处理K[Au(CN)2]化合物的新方法 ,优化了试液预处理和电位滴定法测定Au的条件 ,并与英国标准分析方法进行了对照研究。结果表明 :两种方法的Au分析结果准确度 (相对平均误差≤±0.03 %)基本一致 ,但前者结果精密度好 (相对标准偏差≤0.02%) ,消解快速 (30min)、无污染、无损失、经济、简便 ,符合绿色分析化学的要求 ,适宜推广应用更多还原

【Abstract】 A novel sample pretreatment method based on microwave-assisted closed digestion for the digestion of potassium cyanaurite was developed.The conditions for the sample pretreatment and the determination of gold with micro potentiometric titration were optimized.The developed method was then compared with the British Standard method through analyzing gold in K[Au(CN) 2 ]-(2)-6and K[Au(CN) 2 ]-(2)-8samˉples.The results showed that the accuracies of both methods were almost the same,but the developed method was more precise(RSD≤0.02 % ),rapid,uncontaminated,easytooperate andenvironmental friendly.Experiˉmental results also showed that the method could be applied to a variety of noble metal alloys.更多还原