摘要
主要研究了在氨性溶液中,镍与氨生成镍氨配位离子Ni（NH3）26＋,以紫脲酸胺为指示剂,用EDTA标准溶液直接滴定二价镍的分析条件,当试液颜色由黄色转为紫红色时,即表明试液中的二价镍和EDTA生成稳定的配合物,从而计算出试样中的含镍量。
In ammine solution,Nickel can generate nickel-ammonia coordinate ion-Ni（NH3）2＋6 with ammonia.With purple uric ammonium as an indicator,EDTA standard solution is used to directly titrate bivalent nickel.When the test solution becomes purple red from yellow,it indicates that the bivalent nickel in the test solution generates stable preparation with EDTA,accordingly calculating the nickel quantity in samples.
出处
《莱钢科技》
2009年第6期78-79,共2页
Laigang Science & Technology
关键词
工业纯镍
EDTA滴定法
氨水
紫脲酸胺指示剂
industrial pure nickel
EDTA titration
ammonia water
amine violurate indicator
