| Title: | Volatile organic compounds and their contribution to ground-level ozone formation in a tropical urban environment |
| Author(s): | Zulkifli MFH; Hawari N; Latif MT; Hamid HHA; Mohtar AAA; Idris W; Mustaffa NIH; Juneng L; |
| Address: | "Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Malaysia; Air Division, Department of Environment, Ministry of Environment and Water, 62574, Putrajaya, Malaysia. Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Malaysia. Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Malaysia; Department of Environmental Health, Faculty of Public Health, Universitas Airlangga, 60115, Surabaya, Indonesia. Electronic address: talib@ukm.edu.my. Department of Environment, Faculty of Forestry and Environment, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia" |
| DOI: | 10.1016/j.chemosphere.2022.134852 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "This study aims to determine the trends of volatile organic compound (VOC) concentrations and their potential contribution to O(3) formation. The hourly data (August 2017 to July 2018) for 29 VOCs were obtained from three Malaysian Department of Environment continuous air quality monitoring stations with different urban backgrounds (Shah Alam, Cheras, Seremban). The Ozone Formation Potential (OFP) was calculated based on the individual Maximum Incremental Reactivity (MIR) and VOC concentrations. The results showed that the highest mean total VOC concentrations were recorded at Cheras (148 +/- 123 mug m(-3)), within the Kuala Lumpur urban environment, followed by Shah Alam (124 +/- 116 mug m(-3)) and Seremban (86.4 +/- 89.2 mug m(-3)). VOCs such as n-butane, ethene, ethane and toluene were reported to be the most abundant species at all the selected stations, with overall mean concentrations of 16.6 +/- 11.9 mug m(-3), 12.1 +/- 13.3 mug m(-3), 10.8 +/- 11.9 mug m(-3) and 9.67 +/- 9.00 mug m(-3), respectively. Alkenes (51.3-59.1%) and aromatic hydrocarbons (26.4-33.5%) have been identified as the major contributors to O(3) formation in the study areas based on the overall VOC measurements. Relative humidity was found to influence the concentrations of VOCs more than other meteorological parameters. Overall, this study will contribute to further understanding of the distribution of VOCs and their contribution to O(3) formation, particularly in the tropical urban environment" |
| Keywords: | *Air Pollutants/analysis China Environmental Monitoring/methods *Ozone/analysis Toluene/analysis *Volatile Organic Compounds/analysis Ozone potential formation Tropical environment Urban background Volatile organic compounds; |
| Notes: | "MedlineZulkifli, Mohd Faizul Hilmi Hawari, Nor Syamimi Sufiera Limi Latif, Mohd Talib Hamid, Haris Hafizal Abd Mohtar, Anis Asma Ahmad Idris, Wan Mohd Razi Wan Mustaffa, Nur Ili Hamizah Juneng, Liew eng England 2022/05/10 Chemosphere. 2022 Sep; 302:134852. doi: 10.1016/j.chemosphere.2022.134852. Epub 2022 May 6" |
