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Characterization of individual atmospheric particles by element mapping in electron probe microanalysis |
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| Authors: | Stephan Weinbruch Michael Wentzel Manfred Kluckner Peter Hoffmann Hugo M Ortner |
| Institution: | (1) Technische Hochschule Darmstadt, Fachbereich Materialwissenschaft, Fachgebiet Chemische Analytik, Hilpertstr. 31, D-64295 Darmstadt, Federal Republic of Germany;(2) Abt. Biogeochemie, Max-Planck-Institut für Chemie, Postfach 3060, D-55020 Mainz, Federal Republic of Germany |
| Abstract: | In this paper procedures for the characterization of individual aerosol particles by element mapping in the electron microprobe are presented. The number, size and qualitative chemical composition of particles is derived from a combination of secondary or backscattered electron images and element distribution maps. Accuracy of the size distribution and reliability of the qualitative analysis procedure were checked with silicate samples. In order to obtain a semi-quantitative estimate of the chemical composition of individual particles the count rates taken from element distribution maps are corrected for matrix and geometric effects using particle ZAF procedures.Dedicated to Professor Dr. rer. nat. Dr. h.c. Hubertus Nickel on the occasion of his 65th birthday |
| Keywords: | electron probe microanalysis element distribution mapping particle characterization |
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