Sample preparation of atmospheric aerosol for the determination of carbonyl compounds

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Abstract

Sample preparation including sonication and solid phase extraction has been developed for the determination of carbonyl compounds in atmospheric aerosol. Aerosol samples were sonicated in acidified acetonitrile containing 2,4-dinitrophenylhydrazine (DNPH) to form hydrazone derivatives of aldehydes and ketones. Water was added to the extract to increase its polarity. Then the solution was passed through an octadecyl or phenyl solid phase extraction cartridge. The concentrated hydrazone derivatives were eluted with tetrahydrofuran, the eluate was evaporated to dryness then dissolved in acetonitrile/water mixture and finally analysed by RP-HPLC with UV detection at 360 nm. The absolute detection limits of the individual carbonyl compounds range from 0.4 to 5.8 ng.

Original languageEnglish
Pages (from-to)755-762
Number of pages8
JournalTalanta
Volume48
Issue number4
DOIs
Publication statusPublished - Apr 5 1999

Keywords

  • Aldehydes
  • Atmospheric aerosol
  • Ketones
  • Solid phase extraction

ASJC Scopus subject areas

  • Analytical Chemistry

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