Document Detail

Online Characterization of Particles and Gases with an Ambient Electrospray Ionization Source.
MedLine Citation:
PMID:  23013239     Owner:  NLM     Status:  Publisher    
Methods for on-line characterization and quantification of gas and particle phase species greatly facilitate the study of aerosol particle formation and reaction mechanisms. An on-line method for aerosol analysis has been developed by altering a conventional electrospray ionization (ESI) mass spectrometer to direct the aerosol flow through the nebulizing gas inlet. Interaction between the aerosol and electrospray droplets produces ions that are subsequently analyzed by MS or MS/MS with a quadrupole - ion trap (QTRAP) mass analyzer. Performance is assessed using several particle phase (cesium iodide, glycine) and gas phase (dimethylamine, dimethylnapthylamine) analytes as well as secondary organic aerosol (SOA) produced by ozonolysis of α-pinene. Analyte signal intensity is strongly dependent on solubility in the electrospray solvent, suggesting that the predominant ionization mechanism involves extraction of the analyte into the electrospray droplets. For gas phase analytes, gas phase charge transfer also appears to play a minor role in ion formation. As currently configured, the source is capable of characterizing oligomers in SOA at a mass loading under 30 μg/m3 and quantifying alkyl amine concentrations between approximately 8ppb and 1ppm.
Andrew J Horan; Yuqian Gao; Wiley A Hall; Murray V Johnston
Related Documents :
24276279 - Gas chromatographic-mass spectroscopic identification of protaglandin f2α in flowering...
25479869 - A novel fatty-acid-based in-tube dispersive liquid-liquid microextraction technique for...
23296529 - Glycopeptide enrichment for maldi-tof mass spectrometry analysis by hydrophilic interac...
19825499 - Evaluation of a new polymeric stationary phase with reversed-phase properties for high ...
12803809 - Gc behavior of disaccharide trimethylsilyl oximes.
24684249 - High-throughput cell and tissue analysis with enhanced molecular coverage by laser abla...
9691299 - Acetogenic isoquinoline alkaloids. cxii. separation and identification of dimeric napht...
15794559 - Development, optimization and validation of a fingerprint of ginkgo biloba extracts by ...
9368959 - The effect of yucca schidigera extract on canine and feline faecal volatiles occurring ...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-27
Journal Detail:
Title:  Analytical chemistry     Volume:  -     ISSN:  1520-6882     ISO Abbreviation:  Anal. Chem.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-27     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

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

Previous Document:  Social change in South Africa: A historical approach to relative deprivation.
Next Document:  Antibacterial, anti-HIV-1 protease and cytotoxic activities of aqueous ethanolic extracts from Combr...