Chemometric analysis of multisensor hyperspectral images of precipitated atmospheric particulate matter.
The chemometric analysis of multisensor hyperspectral data allows a comprehensive image-based analysis of precipitated atmospheric particles. Atmospheric particulate matter was precipitated on aluminum foils and analyzed by Raman microspectroscopy and subsequently by electron microscopy and energy dispersive X-ray spectroscopy. All obtained images were of the same spot of an area of 100 × 100 μm(2). The two hyperspectral data sets and the high-resolution scanning electron microscope images were fused into a combined multisensor hyperspectral data set. This multisensor data cube was analyzed using principal component analysis, hierarchical cluster analysis, k-means clustering, and vertex component analysis. The detailed chemometric analysis of the multisensor data allowed an extensive chemical interpretation of the precipitated particles, and their structure and composition led to a comprehensive understanding of atmospheric particulate matter.
Institute of Chemical Technologies and Analytics, TU Wien , Getreidemarkt 9, 1060 Vienna, Austria.
Johannes
J
Ofner
Atmospheric Chemistry, University of Bayreuth , Dr. Hans-Frisch-Straße A1.2, 95448 Bayreuth, Germany.
Katharina A
KA
Kamilli
Institute of Chemical Technologies and Analytics, TU Wien , Getreidemarkt 9, 1060 Vienna, Austria.
Elisabeth
E
Eitenberger
Institute of Chemical Technologies and Analytics, TU Wien , Getreidemarkt 9, 1060 Vienna, Austria.
Gernot
G
Friedbacher
Institute of Chemical Technologies and Analytics, TU Wien , Getreidemarkt 9, 1060 Vienna, Austria.
Bernhard
B
Lendl
Atmospheric Chemistry, University of Bayreuth , Dr. Hans-Frisch-Straße A1.2, 95448 Bayreuth, Germany.
Andreas
A
Held
Institute of Chemical Technologies and Analytics, TU Wien , Getreidemarkt 9, 1060 Vienna, Austria.
Hans
H
Lohninger
D000535:Aluminum / Q000737:chemistry; D001272:Atmosphere / Q000737:chemistry*; D011232:Chemical Precipitation; D016000:Cluster Analysis; D055590:Electromagnetic Phenomena; D048088:Informatics / Q000379:methods*; D052638:Particulate Matter / Q000032:analysis* / Q000737:chemistry*; D025341:Principal Component Analysis; D013059:Spectrum Analysis, Raman
D052638:Particulate Matter; D000535:Aluminum