使用LC-ICP-MS方法测试磷酸铁锂中三价铁和二价铁  

Measurement of Fe(Ⅲ)and Fe(Ⅱ)in LiFePO4 by LC-ICP-MS

作　　者：王景越 熊勇招 闫哲 倪英萍[2] 曾祥程[2] WANG Jingyue;XIONG Yongzhao;YAN Zhe;NI Yingping;ZENG Xiangcheng(Zhejiang Huayou Cobalt.Co.,Ltd,Quzhou,324000,China;Agilent Technologies Shanghai First Branch,Shanghai,200080,China)

机构地区：[1]浙江华友钴业股份有限公司,衢州324000 [2]安捷伦科技(中国)有限公司上海第一分公司,上海200080

出　　处：《环境化学》2023年第6期2136-2138,共3页Environmental Chemistry

摘　　要：本文首次建立了磷酸铁锂中铁价态的LC-ICP-MS检测方法.该方法前处理相比传统的比色分光法操作简单,二价铁和三价铁可以实现同时分析.本研究优化了流动相组成、浓度和pH等参数,对于实际样品分析准确性好,回收率均在80%—120%,具有良好的重复性,RSD%小于2%.LC hyphen ICP-MS method was developed for iron species measurement in LiFePO4(LFP).Compared with the typical colorimetric method,the method we established in this study is much easier in operation.Meanwhile,Fe(Ⅲ)and Fe(Ⅱ)could be separated by LC-ICP-MS method with good accuracy.The concentration,pH of mobile phase is also optimized in this study.Spike recovery could be achieved at 80%—120%for LiFePO4 sample.In addition,outstanding precision at less than 2%RSD demonstrates the robustness of this method.

关 键 词：磷酸铁锂 LC-ICPMS 铁价态 

分 类 号：TM912[电气工程—电力电子与电力传动]