Development of an automated monitoring system for various gas-phase organic carbonyls in ambient air

Frank Schuette, Young Soon Park, Dong Soo Lee

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

An automated monitoring system for various C1 to C5 gas-phase organic carbonyls in ambient air is described. The system consists of a parallel plate diffusion scrubber (PPDS), which is coupled with a high-performance liquid chromatography-ultraviolet (HPLC-UV) system using an automated injection valve. Compared with an annular diffusion scrubber (DS) employed so far for gas-phase carbonyl monitoring, PPDS shows an improved collection efficiency for formaldehyde, acetaldehyde, propionaldehyde, and acetone with >97% at an airflow rate of 0.5 L/min. High gas-liquid concentration ratios of PPDS and an optimised HPLC-UV system allow limits of detection (LOD) in a range of 80-500 pptv. A low liquid hold-up volume of the PPDS results in a short response time of about 10 min. Additionally, the optimised analysis time for 13 carbonyl compounds containing calibration standard enables brief measurement intervals of 25 min. The developed PPDS-HPLC system shows its reliability from urban site monitoring in Seoul, South Korea.

Original languageEnglish
Pages (from-to)355-365
Number of pages11
JournalInternational Journal of Environmental Analytical Chemistry
Volume84
Issue number5
DOIs
Publication statusPublished - 2004 Apr 15

Bibliographical note

Funding Information:
This work was financially supported by the Ministry of the Environment of Korea, for which the authors are grateful.

All Science Journal Classification (ASJC) codes

  • 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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