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石墨富集方式下水中Cr元素的LIBS检测

王寅 赵南京 马明俊 王春龙 余洋 孟德硕 刘建国 刘文清

引用本文:
Citation:

石墨富集方式下水中Cr元素的LIBS检测

    通讯作者: 赵南京, njzhao@aiofm.ac.cn
  • 基金项目:

    国家自然科学基金资助项目(60908018);国家八六三高技术研究发展计划资助项目(2013AA065502);安徽省杰出青年科学基金资助项目(1108085J19)

  • 中图分类号: O433.1

Chromium detection in water enriched with graphite based on laser-induced breakdown spectroscopy

    Corresponding author: ZHAO Nan-jing, njzhao@aiofm.ac.cn ;
  • CLC number: O433.1

  • 摘要: 为了在石墨富集的方式下测量并分析水中Cr元素的激光诱导击穿光谱特性,利用Nd:YAG脉冲激光器作为激发光源,以高分辨率、宽光谱段的中阶梯光栅光谱仪和增强型电荷耦合器件为光信号分离和探测器件,以Cr元素的425.435nm谱线作为分析线,研究了水中Cr元素的时间衰减特性。结果表明,最佳延时时间为1100ns,最佳门宽为1800ns,通过对具有不同Cr元素含量的样品的测量,给出了Cr元素的定标曲线,并最终计算取得Cr元素的检出限为0.520mg/L。这一结果为激光诱导击穿光谱应用于水中Cr元素的快速检测提供了数据参考。
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  • 收稿日期:  2013-03-08
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石墨富集方式下水中Cr元素的LIBS检测

    通讯作者: 赵南京, njzhao@aiofm.ac.cn
  • 1. 中国科学院 安徽光学精密机械研究所 环境光学与技术重点实验室, 合肥 230031
基金项目:  国家自然科学基金资助项目(60908018);国家八六三高技术研究发展计划资助项目(2013AA065502);安徽省杰出青年科学基金资助项目(1108085J19)

摘要: 为了在石墨富集的方式下测量并分析水中Cr元素的激光诱导击穿光谱特性,利用Nd:YAG脉冲激光器作为激发光源,以高分辨率、宽光谱段的中阶梯光栅光谱仪和增强型电荷耦合器件为光信号分离和探测器件,以Cr元素的425.435nm谱线作为分析线,研究了水中Cr元素的时间衰减特性。结果表明,最佳延时时间为1100ns,最佳门宽为1800ns,通过对具有不同Cr元素含量的样品的测量,给出了Cr元素的定标曲线,并最终计算取得Cr元素的检出限为0.520mg/L。这一结果为激光诱导击穿光谱应用于水中Cr元素的快速检测提供了数据参考。

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