利用激光诱导击穿光谱技术探测大气颗粒物中的Pb元素
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摘要
大气颗粒物中的重金属对人体健康具有巨大危害,对其中的重金属元素进行快速检测具有重要意义。利用激光诱导击穿光谱技术对大气颗粒物样品中的重金属元素进行快速分析,结果显示在大气颗粒物样品中含有Na、Al、Si、Cu、Mg、Fe等元素。以Ca元素为参考元素,采用内标法对大气颗粒物中的Pb元素进行定量分析,通过拟合得到定标曲线,计算出Pb元素的检出限为34.3×10-6。分析了Pb元素的等离子体温度、电子数密度等相关特性。实验结果验证了LIBS技术用于大气颗粒物中重金属元素定性与定量分析的可行性,为监测大气颗粒物重金属污染提供了实验依据。
The heavy metal in atmospheric particulates has great harm to human health,and the rapid detection of heavy metal elements therein is important.The laser-induced breakdown spectroscopy(LIBS)is applied to the rapid elemental analysis of atmospheric particulates,and the results show that atmospheric particulates contain Na,Al,Si,Cu,Mg,Fe and other elements.Taking Ca element as the reference element,we use the internal standard method to quantitatively analyze Pb element in the atmospheric particles.The calibration curve is obtained by fitting,and it is calculated that the limit of detection of Pb element is 34.3×10-6.Besides,the plasma temperature and electron number density of Pb element are calculated.The experimental results verify the feasibility of LIBS for the qualitative and quantitative analysis of heavy metal elements in atmospheric particulates and provide experimental evidence for monitoring atmospheric heavy metal pollution.
The heavy metal in atmospheric particulates has great harm to human health,and the rapid detection of heavy metal elements therein is important.The laser-induced breakdown spectroscopy(LIBS)is applied to the rapid elemental analysis of atmospheric particulates,and the results show that atmospheric particulates contain Na,Al,Si,Cu,Mg,Fe and other elements.Taking Ca element as the reference element,we use the internal standard method to quantitatively analyze Pb element in the atmospheric particles.The calibration curve is obtained by fitting,and it is calculated that the limit of detection of Pb element is 34.3×10-6.Besides,the plasma temperature and electron number density of Pb element are calculated.The experimental results verify the feasibility of LIBS for the qualitative and quantitative analysis of heavy metal elements in atmospheric particulates and provide experimental evidence for monitoring atmospheric heavy metal pollution.
引文
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[14]Moncayo S,Manzoor S,Rosales J D,et al.Qualitative and quantitative analysis of milk for the detection of adulteration by laser induced breakdown spectroscopy(LIBS)[J].Food Chemistry,2017,232:322-328.
[15]Yang Y X,Kang J,Wang Y R,et al.Super sensitive detection of lead in water by laser-induced breakdown spectroscopy combined with laser-induced fluorescence technique[J].Acta Optica Sinica,2017,37(11):1130001.杨宇翔,康娟,王亚蕊,等.水中铅元素的激光诱导击穿光谱-激光诱导荧光超灵敏检测[J].光学学报,2017,37(11):1130001.
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[19]Williams A N,Phongikaroon S.Laser-induced breakdown spectroscopy(LIBS)in a novel molten salt aerosol system[J].Applied Spectroscopy,2017,71(4):744-749.
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[21]Radziemski L J,Loree T R,Cremers D A,et al.Time-resolved laser-induced breakdown spectrometry of aerosols[J].Analytical Chemistry,1983,55(8):1246-1252.
[22]Neuhauser R E,Panne U,Niessner R.Laserinduced plasma spectroscopy(LIPS):a versatile tool for monitoring heavy metal aerosols[J].Analytica Chimica Acta,1999,392(1):47-54.
[23]Liu C Y,Li S Q,Zong Y C,et al.Laser-based investigation of the transition from droplets to nanoparticles in flame-assisted spray synthesis of functional nanoparticles[J].Proceedings of the Combustion Institute,2017,36(1):1109-1117.
[24]Williams A N,Phongikaroon S.Elemental detection of cerium and gadolinium in aqueous aerosol using laser-induced breakdown spectroscopy[J].Applied Spectroscopy,2016,70(10):1700-1708.
[25]Redoglio D A,Palazzo N,Migliorini F,et al.Laserinduced breakdown spectroscopy analysis of lead aerosol in nitrogen and air atmosphere[J].Applied Spectroscopy,2018,72(4):584-590.
[26]Huddlestone R H,Leonard S L.Plasma Diagnostic Techniques[M].New York:Academic Press,1965:201-264
[27]Cremers D A,Radziemski L J.Handbook of laserinduced breakdown spectroscopy[M].Chichester,UK:John Wiley&Sons,Ltd,2006:3
[2]Hu X,Zhang Y,Ding Z H,et al.Bioaccessibility and health risk of arsenic and heavy metals(Cd,Co,Cr,Cu,Ni,Pb,Zn and Mn)in TSP and PM2.5in Nanjing,China[J].Atmospheric Environment,2012,57(1):146-152.
[3]Hu Z J,Shi Y L,Niu H Y,et al.Synthetic musk fragrances and heavy metals in snow samples of Beijing urban area,China[J].Atmospheric Research,2012,104:302-305.
[4]Wang Y J,Tu Z Q,Zhou L,et al.Research progress in analytical technology for heavy metals in atmospheric particles[J].Spectroscopy and Spectral Analysis,2015,35(4):1030-1032.汪玉洁,涂振权,周理,等.大气颗粒物重金属元素分析技术研究进展[J].光谱学与光谱分析,2015,35(4):1030-1032.
[5]Noll R,Bette H,Brysch A,et al.Laser-induced breakdown spectrometry:applications for production control and quality assurance in the steel industry[J].Spectrochimica Acta Part B:Atomic Spectroscopy,2001,56(6):637-649.
[6]Pershin S M,Colao F,Spizzichino V.Quantitative analysis of bronze samples by laser-induced breakdown spectroscopy(LIBS):a new approach,model,and experiment[J].Laser Physics,2006,16(3):455-467.
[7]Lu C P,Liu W Q,Zhao N J,et al.Quantitative analysis of chrome in soil samples using laser-induced breakdown spectroscopy[J].Acta Physica Sinica,2011,60(4):388-392.鲁翠萍,刘文清,赵南京,等.土壤重金属铬元素的激光诱导击穿光谱定量分析研究[J].物理学报,2011,60(4):388-392.
[8]Sun L X,Yu H B,Xin Y,et al.On-line monitoring of molten steel compositions by laser-induced breakdown spectroscopy[J].Chinese Journal of Lasers,2011,38(9):0915002.孙兰香,于海斌,辛勇,等.基于激光诱导击穿光谱的钢液成分在线监视[J].中国激光,2011,38(9):0915002.
[9]Chen J Z,Ma R L,Wang J,et al.Detection of the elements Mn and Ni in a steel sample by laser-induced breakdown spectroscopy[J].Acta Photonica Sinica,2014,43(12):1-5.陈金忠,马瑞玲,王敬,等.激光诱导击穿光谱技术测定钢样品中元素Mn和Ni[J].光子学报,2014,43(12):1-5.
[10]Xu Q Y,Zhang Y B,Wang H S,et al.Detection of trace impurities in uranium using laser induced breakdown spectroscopy[J].Chinese Journal of Lasers,2015,42(3):0315002.徐钦英,张永彬,王怀胜,等.激光诱导击穿光谱技术检测铀材料中微量杂质元素[J].中国激光,2015,42(3):0315002.
[11]Hu Y,Li Z H,LüT.Quantitative measurement of iron content in geological standard samples by laserinduced breakdown spectroscopy combined with artificial neural network[J].Laser&Optoelectronics Progress,2017,54(5):053003.胡杨,李子涵,吕涛.基于人工神经网络的激光诱导击穿光谱技术定量测定地质标样铁元素含量[J].激光与光电子学进展,2017,54(5):053003
[12]Li M,Zhu X Y,Xu Y,et al.Quantitative determination of Cu in lake water by laser induced breakdown spectroscopy[J].Laser&Optoelectronics Progress,2013,50(1):013001.李敏,朱心勇,徐媛,等.应用LIBS技术定量检测湖水样品中的铜[J].激光与光电子学进展,2013,50(1):013001.
[13]Ruas A,Matsumoto A,Ohba H,et al.Application of laser-induced breakdown spectroscopy to zirconium in aqueous solution[J].Spectrochimica Acta Part B:Atomic Spectroscopy,2017,131:99-106.
[14]Moncayo S,Manzoor S,Rosales J D,et al.Qualitative and quantitative analysis of milk for the detection of adulteration by laser induced breakdown spectroscopy(LIBS)[J].Food Chemistry,2017,232:322-328.
[15]Yang Y X,Kang J,Wang Y R,et al.Super sensitive detection of lead in water by laser-induced breakdown spectroscopy combined with laser-induced fluorescence technique[J].Acta Optica Sinica,2017,37(11):1130001.杨宇翔,康娟,王亚蕊,等.水中铅元素的激光诱导击穿光谱-激光诱导荧光超灵敏检测[J].光学学报,2017,37(11):1130001.
[16]Nozari H,Rezaei F,Tavassoli S H.Analysis of organic vapors with laser induced breakdown spectroscopy[J].Physics of Plasmas,2015,22(9):093302.
[17]Bak M S,McGann B,Carter C,et al.Determinants of laser-induced breakdown spectra in N2-O2mixtures[J].Journal of Physics D:Applied Physics,2016,49(12):125202.
[18]Yang W B,Li B C,Han Y L,et al.Quantitative analysis of trace oxygen concentration in argon and nitrogen based on laser-induced breakdown spectroscopy[J].Chinese Journal of Lasers,2017,44(10):1011001.杨文斌,李斌成,韩艳玲,等.激光诱导击穿光谱技术定量分析氩气和氮气中的痕量氧含量[J].中国激光,2017,44(10):1011001.
[19]Williams A N,Phongikaroon S.Laser-induced breakdown spectroscopy(LIBS)in a novel molten salt aerosol system[J].Applied Spectroscopy,2017,71(4):744-749.
[20]Zhong S L,Lu Y,Kong W J,et al.Quantitative analysis of lead in aqueous solutions by ultrasonic nebulizer assisted laser induced breakdown spectroscopy[J].Frontiers of Physics,2016,11(4):114202.
[21]Radziemski L J,Loree T R,Cremers D A,et al.Time-resolved laser-induced breakdown spectrometry of aerosols[J].Analytical Chemistry,1983,55(8):1246-1252.
[22]Neuhauser R E,Panne U,Niessner R.Laserinduced plasma spectroscopy(LIPS):a versatile tool for monitoring heavy metal aerosols[J].Analytica Chimica Acta,1999,392(1):47-54.
[23]Liu C Y,Li S Q,Zong Y C,et al.Laser-based investigation of the transition from droplets to nanoparticles in flame-assisted spray synthesis of functional nanoparticles[J].Proceedings of the Combustion Institute,2017,36(1):1109-1117.
[24]Williams A N,Phongikaroon S.Elemental detection of cerium and gadolinium in aqueous aerosol using laser-induced breakdown spectroscopy[J].Applied Spectroscopy,2016,70(10):1700-1708.
[25]Redoglio D A,Palazzo N,Migliorini F,et al.Laserinduced breakdown spectroscopy analysis of lead aerosol in nitrogen and air atmosphere[J].Applied Spectroscopy,2018,72(4):584-590.
[26]Huddlestone R H,Leonard S L.Plasma Diagnostic Techniques[M].New York:Academic Press,1965:201-264
[27]Cremers D A,Radziemski L J.Handbook of laserinduced breakdown spectroscopy[M].Chichester,UK:John Wiley&Sons,Ltd,2006:3