| Title: | A floating chamber system for VOC sea-to-air flux measurement near the sea surface |
| Author(s): | Uning R; Latif MT; Hamid HHA; Suratman S; |
| Address: | "Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia. uningroyston@gmail.com. Institute of Oceanography and Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia. uningroyston@gmail.com. Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia. Institute of Oceanography and Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia" |
| DOI: | 10.1007/s10661-022-10237-y |
| ISSN/ISBN: | 1573-2959 (Electronic) 0167-6369 (Linking) |
| Abstract: | "Volatile organic compounds (VOCs) form ozone (O(3)) and secondary organic aerosols (SOAs) in the atmosphere under favourable conditions. Biogenic VOC levels in the marine atmosphere are significantly lower compared with levels in the atmosphere above terrestrial ecosystems. However, much less is known about the marine biogenic VOC sea-to-air flux, specifically at the sea surface level. Therefore, here we describe a newly developed and cost-effective floating chamber system that has the capacity to measure the VOC sea-to-air flux near the sea surface (< 1 m). The floating chamber is coupled with adsorbent cartridges, and samples were analysed in the laboratory using commercial thermal desorption and gas chromatography mass spectrometry (TD-GC-MS). The structural performance of the floating flux chamber was evaluated, and it was shown to have the capacity to stay continuously afloat for up to 72 h in various conditions (e.g., rainy, windy) and with wave heights up to approximately 1 m in coastal waters. Preliminary measurements of isoprene (3-Methyl-1,2-butadiene) (C(5)H(8)) sea-to-air flux using the floating flux chamber in the coastal waters off the east coast of Peninsular Malaysia found values in the region of 10(7) molecules/cm(2)/s, comparable with most published values based on various flux measurement techniques. We suggest the proposed floating chamber system could serve as a cost-effective VOC flux technique that allows measurements near the sea surface" |
| Keywords: | Atmosphere Ecosystem Environmental Monitoring/methods *Ozone/analysis *Volatile Organic Compounds/analysis Adsorption cartridge Air-sea interface Isoprene Sea surface microlayer Td-gc-ms Volatile organic compounds; |
| Notes: | "MedlineUning, Royston Latif, Mohd Talib Hamid, Haris Hafizal Abd Suratman, Suhaimi eng 02-01-SF1249/Malaysian Ministry of Science, Technology and Innovation (MOSTI/ 66928/Malaysian Higher Institution Centre of Excellence (HICoE)/ Netherlands 2022/06/28 Environ Monit Assess. 2022 Jun 27; 194(8):531. doi: 10.1007/s10661-022-10237-y" |
