Biogenic volatile organic compounds (BVOC) in ambient air over Hong Kong: Analytical methodology and field measurement

Hongwei Chen, Kin Fai Ho, S. C. Lee, Janet Elizabeth Nichol

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

In this paper, an analytical method using a simple semi-manual cryo-trap technique coupled to gas chromatograph with flame ionisation detector (GC-FID) was developed for the determination of biogenic volatile organic compounds (BVOC) in ambient air. Five common BVOC species have been tested, including isoprene and 4 monoterpenes, i.e. α-pinene, β3-pinene, 3-carene (Δ) and limonene. The detection limits were estimated to be about 20ppt for isoprene and 10ppt for monoterpenes, with sample injection volume of 50mL. Based on vegetation types, field measurement work was conducted over urban and rural sites of Hong Kong during summer and winter of 2007. Canister sampling technique was applied in the field measurement. Isoprene contents in rural ambient air were found to be in the range of 60~1560 ppt in winter and 260~3270 ppt in summer, respectively. However, in the measurement of monoterpenes, due to their extremely low concentration in the air samples, only βS-pinene and limonene were detected by the developed analytical method.
Original languageEnglish
Pages (from-to)988-999
Number of pages12
JournalInternational Journal of Environmental Analytical Chemistry
Volume90
Issue number13
DOIs
Publication statusPublished - 17 Sep 2010

Keywords

  • Ambient air
  • Biogenic volatile organic compounds (BVOC)
  • Cryo-trap
  • GC-FID
  • Hong kong

ASJC Scopus subject areas

  • Analytical Chemistry
  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal
  • Soil Science
  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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