Source Apportionment of Individual Carbonaceous Particles Using14C and Laser Microprobe Mass Spectrometry
نویسندگان
چکیده
منابع مشابه
Laser Microprobe Mass Spectrometry LASER MICROPROBE MASS SPECTROMETRY: POSSIBILITIES AND LIMITATIONS
Laser microprobe mass spectrometry (LMMS) employs an intense UV pulse from a focused highpower laser to evaporate and ionize a microvolume (% 1 um3) of solid samples at relatively elevated energy density (106-101’ W cmm2). The ions produced by the interaction of photons with the condensed phase are then mass analyzed in a time-of-flight mass spectrometer and yield a complete mass spectrum on ea...
متن کاملLaser Microprobe Mass Spectrometry: Possibilities and Limitations
Laser microprobe mass spectrometry (LMMS) offers a great potential for inorganic analysis and speciation as well as for organic structural characterization. This remarkable flexibility makes the results critically dependent on the experimental conditions, however, so an exact description is hard to achieve, since inaccessible local parameters are involved. The paper deals in detail with this as...
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A one-year study was performed at the Vavihill background station in southern Sweden to estimate the anthropogenic contribution to the carbonaceous aerosol. Weekly samples of the particulate matter PM10 were collected on quartz filters, and the amounts of organic carbon, elemental carbon, radiocarbon (14C) and levoglucosan were measured. This approach enabled source apportionment of the total c...
متن کاملLaser microprobe mass spectrometry of quaternary phosphonium salts: Direct versus matrix-assisted laser desorption.
The use of laser microprobe mass spectrometry (LMMS) for the structural characterization of thermolabile quaternary phosphonium salts has been evaluated. A comparison has been made between LM mass spectra obtained by direct analysis of "neat" organic salts and the corresponding "matrix-assisted" LM mass spectra. Main limitations of LMMS for the direct analysis of neat organic salts (i.e., no ma...
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ژورنال
عنوان ژورنال: Aerosol Science and Technology
سال: 1989
ISSN: 0278-6826,1521-7388
DOI: 10.1080/02786828908959275