质量法测定银质合金中银的含量
|
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.
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.
引文
[1]贵金属及其合金化学分析方法银合金中银量的测定:GB/T15072.2—1994[S].北京:国家出版总局,1994.
[2]陈光凤,魏尚松.控制电位电解测定银合金中银[J].理化检验-化学分册,2002,38(2):68-69.
[3]潘齐存,王兴隆,戴品中,金碧.盐酸重量法测定银合金中银含量的方法探究[J].广东化工,2011,38(5):290-291.
[4]林海山,王芳.火试金重量法测定导电银浆中银量[J].冶金分析,2013,33(1):73-76.
[5]孟庆保,邹振宇,陈文娟.溴化钾容量法测定银合金首饰银含量测量不确定度评定[J].现代测量与实验室管理,2010,18(5):20-22.
[6]孙宝莲,李波,江燕妮,等.电沉积重量法测定核级银-铟-镉合金中的银[J].中国材料进展,2005,24(11):31-34.
[7]银量的测定合质金化学分析方法第二部分:GB/T 15249.2—2009[S].北京:国家出版总局,2009.
[8]林海山,张鸣.银量测定的标准方法[J].黄金,2013,34(2):25.
[9]郑菁菁.质量法测定合质金中金的含量[J].化工技术与开发,2014(6):69-70.
[10]曾妙先,李家杰.火试金法测定合质金的测量不确定度评定[J].黄金,2009,30(9):61-63.
[2]陈光凤,魏尚松.控制电位电解测定银合金中银[J].理化检验-化学分册,2002,38(2):68-69.
[3]潘齐存,王兴隆,戴品中,金碧.盐酸重量法测定银合金中银含量的方法探究[J].广东化工,2011,38(5):290-291.
[4]林海山,王芳.火试金重量法测定导电银浆中银量[J].冶金分析,2013,33(1):73-76.
[5]孟庆保,邹振宇,陈文娟.溴化钾容量法测定银合金首饰银含量测量不确定度评定[J].现代测量与实验室管理,2010,18(5):20-22.
[6]孙宝莲,李波,江燕妮,等.电沉积重量法测定核级银-铟-镉合金中的银[J].中国材料进展,2005,24(11):31-34.
[7]银量的测定合质金化学分析方法第二部分:GB/T 15249.2—2009[S].北京:国家出版总局,2009.
[8]林海山,张鸣.银量测定的标准方法[J].黄金,2013,34(2):25.
[9]郑菁菁.质量法测定合质金中金的含量[J].化工技术与开发,2014(6):69-70.
[10]曾妙先,李家杰.火试金法测定合质金的测量不确定度评定[J].黄金,2009,30(9):61-63.