基于普通汞灯光源的横向塞曼效应背景校正大气汞检测方法研究

李传新; 司福祺; 周海金; 刘文清; 胡仁志; 刘凤垒

doi:10.7498/aps.63.074202

摘要

精确的背景校正决定着冷原子吸收法检测痕量汞的检测下限，研究了基于普通汞灯光源的横向塞曼效应背景校正大气汞检测方法. 汞灯光源253.65 nm共振谱线在磁场中垂直于磁场方向产生σ-，σ+和π 三个线偏振光. 利用超高分辨率光谱仪获取不同磁场强度下汞样品池对σ-，σ+和π 线偏振光的吸光度，分析横向塞曼效应背景校正方法所需的最小磁场强度；在1.78 T强磁场强度下，分析了窄带吸收气体苯、宽带吸收气体丙酮对横向塞曼效应背景校正大气汞检测方法可能存在的干扰；利用σ-，σ+作为背景光，π 线偏振光作为吸收光，对不同长度的饱和汞蒸气样品池测量，精确背景校正后，吸光度拟合曲线R值达到0.99. 实验结果表明基于普通汞灯光源的横向塞曼效应背景校正大气汞检测方法可以实现精确背景校正，能够应用于大气环境痕量汞检测.

关键词:

Abstract

The accurate background correction can determine the minimum limit of trace mercury measurement in atmosphere by the cold vapor atomic absorption method. This paper studies a new method of mercury detection using the common mercury lamp as sources which correct the background according to the transverse Zeeman effect. The resonance spectral line (253.65 nm) of the meccury lamp generates σ-, σ+, and π linear polarized light in the vertical direction of the magnetic field. This study obtains mercury absorbance of σ-, σ+, and π light in different magnetic field intensity by using ultra-high resolution spectrometer, then gets the minimum field intensity of the method. We discuss the existing possible interference caused by benzene with narrow-band absorption and acetone with broadband absorption under 1.78 T magnetic field intensity. Taking σ- and σ+ as background light, and π as absorption light, we quantify the saturated mercury vapor cell with different lengths. With the accurate background correction, the R value of absorption fitting curve can achieve 0.99. Results indicate that the method can accomplish the job of accurate background correction and can be applied to trace mercury measurement in atmosphere.

Keywords:

作者及机构信息

1.
中国科学技术大学, 光学与光学工程系, 合肥 230026;

2.
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（批准号：41275037）和安徽省杰出青年科学基金（批准号：1308085JGD03）资助的课题.

Authors and contacts

1.
University of Science and Technology of China,Dept.of Optics and Optical Engineering, HeFei 230026, China;

2.
Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences, Hefei 230031, China

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 41275037), and the Science-Technology Foundation for Young Scientist of Anhui Province, China (Grant No. 1308085JGD03).

参考文献

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[8]	Pan L, Chai T F, Carmichael G R, Tang Y H, Streets D, Woo J H, Friedlid R, Radke L F 2007 Atmos. Environ. 41 2804
[9]	Pacyna E G, Pacyna J M, Steenhuisen F, Wilson S 2006 Atmos. Environ. 40 4048
[10]	Wilson S J, Steenhuisen F, Pacyna J M, Pacyna E G 2006 Atmos. Environ. 40 4621
[11]	de Jesus R M, Silva L O B, Castro J T, de Azevedo Neto A D, de Jesus R M, Ferreira S L C 2013 Talanta 106 293
[12]	Frentiu T, Mihaltan A I, Ponta M, Darvasi E, Frentiu M, Cordos E 2011 Journal of Hazardous Materials 193 65
[13]	da Silva D G, Portugal L A, Serra A M, Ferreira S L C, Cerdà V 2013 Food Chemistry 137 159
[14]	Hadeishi T, Mclaughln R D 1971 Science 174 404
[15]	Hadeishi1 T, Church D A, McLaughlin R D, Zak1 B D, Chang M M B 1975 Science 187 348
[16]	Sholupov S, Pogarev S, Ryzhov V, Mashyanov N, Stroganov A 2004 Fuel Processing Technology 85 473
[17]	Fritsche J, Wohlfahrt G, Ammann C, Zeeman M, Hammerle A, Obrist D, Alewell C 2008 Atmos. Chem. Phys. 8 7709
[18]	Zhang Q G, You J H, He J 2008 Journal of Henan University of Science and Technology:Natural Science 29 84 (in Chinese) [张庆国, 尤景汉, 贺健2008 河南科技大学学报自然科学版29 84]
[19]	Hu Y G, Zeng F Q, Li W, Hu J M 2005 Spectroscopy and Spectral Analysis 25 808 (in Chinese) [胡耀垓, 曾繁清, 李伟, 胡继明2005 光谱学与光谱分析25 808]
[20]	Zhou B, Liu W Q, Qi F, Li Z B, Cui Y J 2001 Acta Phys. Sin. 50 1818 (in Chinese) [周斌, 刘文清, 齐峰, 李振壁, 崔延军2001 50 1818]
[21]	Etzkorn T, Klotz B, Sorensen S, Patroescu I V, Barnes I, Becker K H, Platt U 1999 Atmospheric Environment 33 525
[22]	Koch J D, Gronki J, Hanson R K 2008 journal of Quantitative Spectroscopy and Radiative Transfer 109 2037
[23]	Jiang S Q 2006 M. S. Thesis (Haerbin:Harbin Institute of Technology) (in Chinese) [姜诗琦2006 硕士学位论文 (哈尔滨: 哈尔滨工业大学)]

施引文献

[1]	Hansen J C, Danscher G 1997 Reviews on Environmental Health 12 107
[2]	Schroeder W H, Munthe J 1998 Atmos. Environ 32 809
[3]	Steve Lindberg, Russell Bullock, Ralf Ebinghaus, Daniel Engstrom, Xinbin Feng, William Fitzgerald, Nicola Pirrone, Eric Prestbo, Christian Seigneur 2007 A Journal of the Human Environment 36 19
[4]	Feng X B, Qiu G L, Fu X W, He T R, Li P, Wang S F 2009 Progress In Chemistry 21 436 (in Chinese)[冯新斌, 仇广乐, 付学吾, 何天容, 李平, 王少锋2009 化学进展21 436]
[5]	Muir D C G, Wagemann R, Hargrave B T, Thomas D J, Peakall D B, Norstrom R J 1992 Science of the Total Environment 122 75
[6]	Streets D G, Hao J M, Wu Y, Jiang J K, Chan M, Tian H Z, Feng X B 2005 Atmos. Environ. 39 7789
[7]	Wu Y, Wang S X, Streets D G, Hao J M, Chan M, Jiang J K 2006 Environ. Sci. Technol. 40 5312
[8]	Pan L, Chai T F, Carmichael G R, Tang Y H, Streets D, Woo J H, Friedlid R, Radke L F 2007 Atmos. Environ. 41 2804
[9]	Pacyna E G, Pacyna J M, Steenhuisen F, Wilson S 2006 Atmos. Environ. 40 4048
[10]	Wilson S J, Steenhuisen F, Pacyna J M, Pacyna E G 2006 Atmos. Environ. 40 4621
[11]	de Jesus R M, Silva L O B, Castro J T, de Azevedo Neto A D, de Jesus R M, Ferreira S L C 2013 Talanta 106 293
[12]	Frentiu T, Mihaltan A I, Ponta M, Darvasi E, Frentiu M, Cordos E 2011 Journal of Hazardous Materials 193 65
[13]	da Silva D G, Portugal L A, Serra A M, Ferreira S L C, Cerdà V 2013 Food Chemistry 137 159
[14]	Hadeishi T, Mclaughln R D 1971 Science 174 404
[15]	Hadeishi1 T, Church D A, McLaughlin R D, Zak1 B D, Chang M M B 1975 Science 187 348
[16]	Sholupov S, Pogarev S, Ryzhov V, Mashyanov N, Stroganov A 2004 Fuel Processing Technology 85 473
[17]	Fritsche J, Wohlfahrt G, Ammann C, Zeeman M, Hammerle A, Obrist D, Alewell C 2008 Atmos. Chem. Phys. 8 7709
[18]	Zhang Q G, You J H, He J 2008 Journal of Henan University of Science and Technology:Natural Science 29 84 (in Chinese) [张庆国, 尤景汉, 贺健2008 河南科技大学学报自然科学版29 84]
[19]	Hu Y G, Zeng F Q, Li W, Hu J M 2005 Spectroscopy and Spectral Analysis 25 808 (in Chinese) [胡耀垓, 曾繁清, 李伟, 胡继明2005 光谱学与光谱分析25 808]
[20]	Zhou B, Liu W Q, Qi F, Li Z B, Cui Y J 2001 Acta Phys. Sin. 50 1818 (in Chinese) [周斌, 刘文清, 齐峰, 李振壁, 崔延军2001 50 1818]
[21]	Etzkorn T, Klotz B, Sorensen S, Patroescu I V, Barnes I, Becker K H, Platt U 1999 Atmospheric Environment 33 525
[22]	Koch J D, Gronki J, Hanson R K 2008 journal of Quantitative Spectroscopy and Radiative Transfer 109 2037
[23]	Jiang S Q 2006 M. S. Thesis (Haerbin:Harbin Institute of Technology) (in Chinese) [姜诗琦2006 硕士学位论文 (哈尔滨: 哈尔滨工业大学)]

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