镍钛铂合金中铂量的测定  

Determination of platinum content in Ni-Ti-Pt alloy

作　　者：张晓 张金娥 李娜 陈雄飞 臧慕文 刘英 

机构地区：[1]国标(北京)检验认证有限公司,北京100088

出　　处：《分析试验室》2018年第1期66-68,共3页Chinese Journal of Analysis Laboratory

摘　　要：样品以混酸溶解,在酸性介质中,NH_4Cl与Pt^(4+)形成(NH_4)2PtCl_6沉淀,静置,过滤,在900℃马弗炉中,灼烧至恒量。以电感耦合等离子体原子发射光谱仪(ICP-AES)测定滤液中残留Pt的质量,以沉淀出的Pt与滤液中残留Pt的质量之和,计算Pt的质量分数。The sample was dissolved by mixed acid. In the acid medium, platinum ions reacted with ammonium chloride and changed into ammonium platinochloride. After being stood and tilted, the precipitate was burned to a constant mass in the muffle furnace at 900 ℃. The residual platinum in the filtrate was determined by inductively coupled plasma atomic emission spectrum （ICP-AES）. The mass fraction of platinum was calculated by using the sum of the residual platinum in both chloroplatinic acid ammonium and the filtrate.

关 键 词：氯铂酸铵 恒量 电感耦合等离子体原子发射光谱 铂 

分 类 号：TF03[冶金工程—冶金物理化学]