摘要
用氢氧化铁共沉淀分离卤水中的钴镍锰,用王水[V(王水)∶V(水)=1∶1]溶解沉淀定容,电感耦合等离子发射光谱法测定。检出限为LDD(Co,Mn)=0.10mg/L,LDD(Ni)=0.27mg/L,加标回收率为95.00%~102.00%,精密度(n=12)为1.05%。经过多次的加标回收率的验证,满足测试要求,因此,可以准确测定卤水中钴镍锰,且操作简单,满足测试要求,已经用于实验室检测。
The contents of Co,Ni and Mn in brine sample were determined by inductively coupled plasmaatomic emission spectrometry(ICP-AES)after co-precipitation with ferric hydroxide and decomposing and extracting with aqua regia[V(aquaregia)∶V(H2 O)=1∶1].The detection limits for Co and Mn were both0.10 mg/L,and the detection limit for Ni was 0.27 mg/L.The recovery rates were in the range of95.00%~102.00% with a RSD(n=12)of 1.05%.The results of multiple standard recovery were satisfactory.The method has the merits of easy operation,practicality and low cost,which meet the demands for the laboratory testing.
作者
武丽平
袁红战
李文波
WU Liping;YUAN Hongzhan;LI Wenbo(Testing Center of Qinghai Chaidamu Comprehensive Geological and Mineral Exploration Academy,Geermu,Qinghai 816000,China)
出处
《化学世界》
CAS
CSCD
2018年第10期675-678,共4页
Chemical World
关键词
共沉淀
卤水
电感耦合等离子发射体光谱法
钴
镍
锰
co-precipitation
brine
inductively coupled plasma-atomic emission spectrometry (ICP-AES)
cobalt
nickel
manganese