学术论文

      电感耦合等离子体原子发射光谱法测定船用钢中砷锡锑

      Determination of arsenic ,tin and antimony in steel for ship by inductively coupled plasma atomic emission spectrometry

      摘要:
      使用2.0 mL硝酸和10.0 mL盐酸溶解样品,选择As 188.979 nm、Sn 189.927 nm、Sb 206.836 nm为分析线并采用两点校正法扣除背景,建立了使用电感耦合等离子体原子发射光谱法(ICP-AES)测定船用钢中砷、锡和锑的分析方法.采用基体匹配法配制标准溶液系列并绘制校准曲线,方法中各元素校准曲线线性关系良好,相关系数均不小于0.999;方法中各元素的检出限不大于0.0002%(质量分数).按照实验方法测定低合金钢标准样品中砷、锡和锑,结果的相对标准偏差(RSD,n=10)为0.38%~3.0%,测定结果与认定值相吻合;方法应用于船用钢样品中砷、锡、锑的测定,结果的相对标准偏差(RSD,n=10)不大于5%,测定结果与采用氢化物-原子荧光光谱法的测定结果一致.
      Abstract:
      The sample was dissolved using 2.0 mL of nitric acid and 10.0 mL of hydrochloric acid .As 188.979 nm ,Sn 189 .927 nm and Sb 206 .836 nm were selected as the analysis lines .The background was deducted by two-point correction method .The analysis method of arsenic ,tin and antimony in steel for ship by inductively coupled plasma atomic emission spectrometry (ICP-AES) was established .The standard solution series were prepared by matrix matching method for the plotting of calibration curve .The linearity of calibration curve for each element was good with correlation coefficient higher than 0 .999 .The detection limits were less than 0 .0002% (mass fraction) .The content of arsenic ,tin and antimony in standard sam-ple of low alloy steel was determined according to experimental method .The relative standard deviations (RSD ,n=10) were between 0 .38% and 1 .9% .The determination results were consistent with the certi-fied values .The proposed method was also applied to the determination of arsenic ,tin and antimony in steel sample for ship .RSD (n=10) was less than 5% and the found results were consistent with those ob-tained by hydride generation-atomic fluorescence spectrometry .
      Author: DU Mi-fang NIE Fu-qiang DU Li-li LIU Pan
      作者单位: 中国船舶重工集团公司第七二五研究所 ,河南洛阳,471023
      刊 名: 冶金分析 ISTICPKU
      年,卷(期): 2017, 37(2)
      在线出版日期: 2017年3月30日
      基金项目: 国防科工局技术基础"十二五"科研项目