A renewable liquid droplet method for on-line pollution analysis by multi-photon lonization

Israel Schechter*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

A multi-photon ionization based fast conductance (MPIFC) technique was applied to detect combustion byproduct aerosols. These PAH-polluted aerosols were on-line sampled by means of renewable water microdroplets. The environmental cases considered here have involved such common air contaminants as motor car exhaust gas and cigarette smoke. The possibility of obtaining useful calibration curves has been addressed. Two droplet contamination regimes were clearly observed. These have been argued to be associated with either a volume uniform (i.e., a bulk type) or a surface-favored contamination. The latter regime is possible whenever the increasing droplet contamination extends beyond the solubility saturation of the PAH compounds. Detection limits as low as 1 pg were obtained for pyrene-contaminated renewable microdroplets.

Original languageEnglish
Pages (from-to)2098-2102
Number of pages5
JournalAnalytical Chemistry
Volume69
Issue number12
DOIs
StatePublished - 1997
Externally publishedYes

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