Inorganic Chemicals Industry >
ICP-AES determination of phosphorous content in iron phosphate for battery materials
Received date: 2019-11-28
Online published: 2020-05-21
An analytical method was proposed for the determination of phosphorous content in iron phosphate for battery ma-terials using inductively coupled plasma atomic emission spectrometry(ICP-AES).The sample was dissolved with hydrochlo-ric acid at low temperature and P 177.499 nm was selected as the analyzing spectrum line.The matrix effect of iron was elimi-nated by direct dilution and two-point background correction method.The results showed that the linear correlation coefficient of calibration graph in the range of 0~50 μg/mL of phosphorous mass concentration was over 0.999.The detection limit of this method was 0.02%.The proposed method was successfully applied to the determination of phosphorus in iron phosphate sam-ples and the determined relative standard deviation(RSD) was less than 0.50%.The analytical results were consistent with those obtained by industrial standard method HG/T 4701—2014,Quinoline Phosphomolybdate Gravimetric Method.
Key words: ICP-AES; iron phosphate; phosphorus
Zengbin Hu , Zongze Li , Shaohua Li , Jie Cun , Yonge Xu . ICP-AES determination of phosphorous content in iron phosphate for battery materials[J]. Inorganic Chemicals Industry, 2020 , 52(5) : 78 -80 . DOI: 10.11962/1006-4990.2019-0347
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