摘要
试样经硝酸分解、以氯化钠为沉淀剂实现杂质分离,氨水反溶后,以水合肼为还原剂选择性还原,采用质量法测定银合金中银元素的含量,测定范围40%～99%。该方法回收率高,与国标的电位滴定法比较,操作相对简单,易于掌握,且对实验设备及环境要求不高,在测定合质银含量的同时实现了对银的提纯回收,适合工矿企业生产运用。
Samples with dilute nitric acid, ammonia decomposition, separation of impurities, with anti solvent after selective reduction of hydrazine hydrate as reducing agent, content by gravimetric method for the determination of silver alloy elements, measurement range 40%~99%. The method has the advantages of higher recovery rate, more simply operation, easier control, and lower requirement for environment to the national standard method. The silver was purified and recovered while the content of silver was determined. And it is suitable for the production and application of the industrial and mining enterprises.
作者
傅立
Fu Li(Guangxi Metallurgical Products Quality Supervision and Test Station,Nanning Guangxi530023)
出处
《山西冶金》
CAS
2019年第1期44-45,共2页
Shanxi Metallurgy
关键词
银质合金
银含量
水合肼
质量法
silver alloy
content of silver
hydrazine hydrate
gravimetric method
