Document Detail


Investigation of chemical mixing state of individual Asian dust particles by the combined use of electron probe X-ray microanalysis and Raman microspectrometry.
MedLine Citation:
PMID:  22380789     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In this work, quantitative electron probe X-ray microanalysis (EPMA) and Raman microspectrometry (RMS) were applied in combination for the first time to characterize complex internal structure and physicochemical properties of the same ensemble of Asian dust particles. The analytical methodology to obtain the chemical composition, mixing state, and spatial distribution of chemical species within single particles through the combined use of the two techniques is described. Asian dust aerosol particles collected in Incheon, Korea, during a moderate dust storm event were examined to assess the applicability of the methodology to resolve internal mixtures within single particles. Among 92 individual analyzed particles, EPMA and RMS identified 53% of the particles to be internally mixed with two or more chemical species. Information on the spatial distribution of chemical compounds within internally mixed individual particles can be useful for deciphering the particle aging mechanisms and sources. This study demonstrates that the characterization of individual particles including chemical speciation and mixing state analysis can be performed more in detail using EPMA and RMS in combination than with the two single particle techniques alone.
Authors:
Sophie Sobanska; Heejin Hwang; Marie Choel; Hae-Jin Jung; Hyo-Jin Eom; Hyekyeong Kim; Jacques Barbillat; Chul-Un Ro
Related Documents :
16089399 - Biomimetics with a self-assembled monolayer of catalytically active tethered isoalloxaz...
2993069 - Electron-spin-resonance studies on flavoenzymes.
7857939 - Photoinduced spin-polarized radical pair formation in a dna photolyase.substrate comple...
9558349 - Nadph-flavodoxin reductase and flavodoxin from escherichia coli: characteristics as a s...
6743239 - Measurement of the oxidation-reduction potentials for one-electron and two-electron red...
12646269 - Electron transfer is activated by calmodulin in the flavin domain of human neuronal nit...
11908079 - Studies on 4,7-di-substitution effects of one ligand in [ru(phen)3]2+ with dft method.
919699 - Calcification in an ageing ligula intestinalis (l) plerocercoid from a bream (abramis b...
12430429 - 5-azahexenoyl radicals cyclize via nucleophilic addition to the acyl carbon rather than...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-1
Journal Detail:
Title:  Analytical chemistry     Volume:  -     ISSN:  1520-6882     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370536     Medline TA:  Anal Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Marginal Fit of Implant-supported All-Ceramic Zirconia Frameworks.
Next Document:  Mechanisms of disease: the endocrinology of ectopic pregnancy.