大气气溶胶有害成分的激光击穿光谱探测

J4 ›› 2013, Vol. 30 ›› Issue (2): 134-137.

大气气溶胶有害成分的激光击穿光谱探测

刘林美1,2，林兆祥2，龚顺生1

1 中国科学院武汉物理与数学研究所，湖北武汉 430071； 2 中南民族大学激光光谱实验室，湖北武汉 430074

出版日期:2013-03-28 发布日期:2013-03-14
通讯作者: 刘林美（1987-）福建龙岩市人，助理工程师，主要从事大气激光雷达探测研究。 E-mail:liulinmei06@126.com
基金资助:
国家自然科学基金项目（50846041）、武汉市攻关计划项目(200906223059)

Detection of Injurious Ingredient in Aerosol by Laser-Induced Breakdown Spectroscopy

LIU Lin-mei1,2，LIN Zhao-xiang2，GONG Shun-sheng1

1 Wuhan Institute of Physics and Mathematics, Chinese Academy of Sicence, Wuhan 430071, China; 2 Laboratory for Laser Spectroscopy Application, South-Central University for Nationalities, Wuhan 430074, China

Published:2013-03-28 Online:2013-03-14

摘要/Abstract

摘要： 大气气溶胶中的重金属成分对人类健康有严重的危害，有必要对其进行控制和检测。本文利用自行搭建的一套激光击穿光谱(Laser-induced Breakdown Spectroscopy，简称LIBS)大气气溶胶监测系统，对中南民族大学电信学院楼顶处的气溶胶进行了为期一个月的探测研究，获得了这一个月中PM10的分布和Be元素谱线强度的分布，通过对烟花爆竹燃烧产生的烟雾进行探测，获得了多种重金属元素的LIBS光谱图。通过对光谱图的定性分析表明，该技术能够同时检测大气气溶胶中重金属成分。配置含Cd、Sr、Na、Pb不同浓度的大气样品进行了定标实验，结果表明这些元素的谱线强度与其元素浓度有很好的线性关系，其线性拟合相关度均大于0.94。这些研究结果有效表明该技术能用于大气气溶胶中多种重金属成分的同时探测，为大气气溶胶中重金属成分的实时在线检测提供了一种新的方法。

关键词: 光谱学, 激光击穿光谱, 气溶胶, 重金属元素, 实时在线

Abstract: The heavy metal elements in aerosol were serious harm to human health. So it was necessary to in-situ and real-time monitor the heavy metals in atmosphere. The research of aerosol by LIBS monitor system continued one month in South Central University for Nationalities. The distribution of PM10 and spectrum intensity of Be element has been obtained in this month. The spectrum of heavy metal by fireworks combustion has been got by using this monitor system. Through qualitative analysis of heavy metal showed the technology could detect heavy metals in aerosol at the same time. Through quantitative analysis of simulated aerosol got Cd、Sr、Na、Pb elements calibration curve. The linear correlation coefficient was more than 0.94. The results will provide a new method for real-time online detection of heavy metals in atmospheric aerosol.

Key words: laser-induced breakdown spectroscopy, aerosol, heavy metal, real-time online

中图分类号:

O433.1

刘林美，林兆祥，龚顺生. 大气气溶胶有害成分的激光击穿光谱探测[J]. J4, 2013, 30(2): 134-137.

LIU Lin-mei，LIN Zhao-xiang，GONG Shun-sheng. Detection of Injurious Ingredient in Aerosol by Laser-Induced Breakdown Spectroscopy[J]. J4, 2013, 30(2): 134-137.

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