电感耦合等离子体发射光谱法直接测定磷酸铁中磷含量

Determination of Phosphorus in Iron Phosphate by Inductively Coupled Plasma Optical Emission Spectrometry

采用电感耦合等离子体发射光谱法,通过筛选合适的分析谱线消除共存元素干扰,实现了磷酸铁中磷含量的直接测定,磷浓度在100~500 mg/L范围内具有良好的线性关系(r≥0.9990),10次重复测定相对标准偏差(RSD)0.06%~0.49%,加标回收率在99.6%~100.9%,检出限为0.01%,能够满足实际样品的分析检测要求。

The inductively coupled plasma atomic emission spectrometry method was used to quantitatively detect Phosphorus in iron(iii)phosphate by screening suitable analytical lines.The phosphorus concentrations have a good linear relationship(r≥0.9999)in the range of 100~500 mg/L,the relative standard deviation(RSD)is 0.06%~0.49%,and the recoveries are 99.6%~100.9%.The limits of detection is 0.01%,which can meet the requirements of real sample analysis.