Chemically-assigned classification of aerosol mass spectra
نویسندگان
چکیده
منابع مشابه
Evolving mass spectra of the oxidized component of organic aerosol: results from aerosol mass spectrometer analyses of aged diesel emissions
The species and chemistry responsible for secondary organic aerosol (SOA) formation remain highly uncertain. Laboratory studies of the oxidation of individual, high-flux SOA precursors do not lead to particles with mass spectra (MS) matching those of ambient aged organic material. Additionally, the complexity of real organic particles challenges efforts to identify their chemical origins. We ha...
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State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China Department of Environmental Toxicology, University of California, Davis, California, USA Atmospheric Sciences Research Center, State University of New York at Albany, Albany, New York School of Chemical and Biomolecular Engineering a...
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Although laboratory studies show that biogenic volatile organic compounds (VOCs) yield substantial secondary organic aerosol (SOA), production of biogenic SOA as indicated by upward fluxes has not been conclusively observed over forests. Further, while aerosols are known to deposit to surfaces, few techniques exist to provide chemically-resolved particle deposition fluxes. To better constrain a...
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Selecting relevant features in mass spectra analysis is important both for classification and search for causality. In this paper, it is shown how using mutual information can help answering to both objectives, in a model-free nonlinear way. A combination of ranking and forward selection makes it possible to select several feature groups that may lead to similar classification performances, but...
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ژورنال
عنوان ژورنال: Journal of the American Society for Mass Spectrometry
سال: 2002
ISSN: 1044-0305,1879-1123
DOI: 10.1016/s1044-0305(02)00379-3