微波碱熔消解-电感耦合等离子体发射光谱法测定含包覆碳的磷酸铁锂中的磷、铁、锂  

Determination of phosphorus,iron and lithium in lithium iron phosphate containing coated carbon by microwave alkali digestion and ICP method

作　　者：彭桦[1] 张江坤[1] 余慧茹[1] 杨晓燕 李芬 李有华 甘海轩 杜雄雁 史鑫[1] PENG Hua;ZHANG Jiangkun;YU Huiru;YANG Xiaoyan;LI Fen;LI Youhua;GAN Haixuan;DU Xiongyan;SHI Xin(Yunnan Phosphate Group Co.,Ltd./National Engineering and Technology Research Center for Development and Utilization of Phosphorus Resource,Kunming 650600,China;Yunnan Zhinong High Technology Co.,Ltd.,Kunming 650600,China)

机构地区：[1]云南磷化集团有限公司/国家磷资源开发利用工程技术研究中心,云南昆明650600 [2]云南智农高新技术有限公司,云南昆明650600

出　　处：《磷肥与复肥》2023年第5期47-48,共2页Phosphate & Compound Fertilizer

基　　金：国家磷资源开发利用工程技术研究中心基础研究项目“基于磷化工与胶磷矿选矿耦合碳减排关键技术研究”(2022-04)。

摘　　要：采用微波碱熔法消解含包覆碳的磷酸铁锂样品,稀释10倍后用电感耦合等离子体发射光谱法同时测定磷、铁、锂含量。测定结果同GB/T 33822—2017方法无显著性差异,3种元素相对标准偏差均<0.99%,加标回收率在98.0%~109.3%,准确度高,精密性好,检出限低,试剂用量少,操作简单。The sample of lithium iron phosphate containing coated carbon is digested by microwave alkali melting method,and the contents of phosphorus,iron and lithium are determined simultaneously by ICP after diluted 10 times.The determination results show no significant difference with GB/T 338222017 method.The relative standard deviation of the three elements is<0.99%,and the added standard recovery rate is between 98.0%and 109.3%.The method has high accuracy,good precision and low detection limit,the reagent dosage is small,and the operation is simple.

关 键 词：含包覆碳的磷酸铁锂 微波碱熔消解 电感耦合等离子体发射光谱法 磷 铁 锂 

分 类 号：TQ440.72[化学工程—化学肥料工业]