Online mass spectrometric aerosol measurements during the MINOS campaign (Crete, August 2001)
Online mass spectrometric aerosol measurements during the MINOS campaign (Crete, August 2001)
复制标题
MINOS 活动期间的在线质谱气溶胶测量（克里特岛，2001 年 8 月）
DOI：
10.5194/acp-4-65-2004
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发表时间：
2003
影响因子：
6.3
通讯作者：
D. Worsnop
中科院分区：
文献类型：
--
作者：
J. Schneider;S. Borrmann;A. Wollny;M. Bläsner;N. Mihalopoulos;K. Oikonomou;J. Sciare;A. Teller;Z. Levin;D. Worsnop
在夏季东地中海的一次实地研究中，对挥发性和半挥发性（=非难降解）气溶胶颗粒进行了质谱分析。已经使用了尺寸分辨的定量质谱技术（Aerodyne气溶胶质谱仪，AMS），并将结果与过滤器取样方法和颗粒尺寸测量技术进行了比较。不同的技术都同意这样的发现，即细颗粒模式（D<1.2µm）主要由硫酸铵和有机材料组成。气溶胶中硫酸盐的含量在2至12微克/立方米之间。在大多数日子，铵与硫酸盐密切相关，表明硫酸铵是气溶胶的主要成分，但在硫酸盐质量浓度高的日子，硫酸盐不能被铵完全中和。轨迹表明，气溶胶和/或其前体来自东南欧。硫酸铵气溶胶的来源最有可能是化石燃料燃烧，而有机气溶胶也可能来自生物质燃烧。在质谱仪中的有机物馏分的离子系列分析表明，有机物的主要成分是含氧有机物，这是老化，光化学处理的气溶胶或生物质燃烧气溶胶的标记。用气溶胶质谱仪测量的非难熔气溶胶化合物在精细模式下占总气溶胶质量的37%至50%。在本研究期间，第二台用于激光烧蚀单粒子分析的质谱仪首次用于该领域，并产生了与
Mass spectrometric analysis of volatile and semi- volatile (=non-refractory) aerosol particles have been per- formed during a field study in the summer Eastern Mediter- ranean. A size-resolved, quantitative mass spectrometric technique (the Aerodyne Aerosol Mass Spectrometer, AMS) has been used, and the results are compared to filter sam- pling methods and particle sizing techniques. The different techniques agree with the finding that the fine particle mode (D<1.2µm) consisted mostly of ammonium sulfate and of organic material. The aerosol sulfate ranged between 2 and 12µg/m 3 . On most days, ammonium was closely corre- lated with sulfate, suggesting ammonium sulfate as the major aerosol component, but on days with high sulfate mass con- centrations, the sulfate was not fully neutralized by ammo- nium. Trajectories indicate that the aerosol and/or its precur- sors originate from South-Eastern Europe. The source of the ammonium sulfate aerosol is most likely fossil fuel burning, whereas the organic aerosol may also originate from biomass burning. Ion series analysis of the organics fraction in the mass spectrometer indicated that the major component of the organics were oxygenated organics which are a marker for aged, photochemically processed aerosol or biomass burning aerosol. The non-refractory aerosol compounds, measured with the Aerosol Mass Spectrometer, contributed between 37 and 50% to the total aerosol mass in the fine mode. A second mass spectrometer for single particle analysis by laser abla- tion has been used for the first time in the field during this study and yielded results, which agree with filter samples of
影响因子：
5.2
作者：
Jayne, JT;Leard, DC;Worsnop, DR
通讯作者：
Worsnop, DR