电感耦合等离子体发射光谱(ICP-OES)法测定铅泥、铅烟灰中铟量

Determination of Indium Content in Lead Paste and Lead Soot by Inductively Coupled Plasma Optical Emission Spectrometry

建立了用盐酸、硝酸、氢氟酸、高氯酸、氢溴酸-盐酸混合酸溶解样品,电感耦合等离子体发射光谱(ICP-OES)法测定铅泥、铅烟灰中铟量的方法。确定了仪器最佳测定条件和溶样方式,选择325.609 nm作为最优分析谱线,铟的检出限为0.027μg/mL,相对标准偏差<4%(n=11),加标回收率99.0%~101%,能够满足快速测定铅泥、铅烟灰中铟含量的需求。

The sample was digested in hydrochloric acid,nitric acid,hydrofluoric acid,perchloric acid,and mixed acid of hydrobromic acid and hydrochloric acid.The content of indium in lead paste and lead soot was determined by inductively coupled plasma optical emission spectrometry(ICP-OES).The optimum determination conditions and the sample dissolving method were determined.The optimum analysis line is 325.609 nm.The detection limit of indium is 0.027μg/mL.The relative standard deviation(RSD)less than 4%(n=11).The recovery of indium is 99%—101%.It can meet the requirement of rapid determination of indium content in lead paste and lead soot.