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General Session 2: Marine & estuarine biogeochemistry |
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Detection of volatile organic compounds emissions from sea surface microlayer using thermal desorption sorbent tubes
Wednesday 11th @ 1030-1050
Conference Hall
Royston Uning* , The National University of Malaysia
Mohd Talib Latif, The National University of Malaysia
Haris Hasrizal, The National University of Malaysia
Md Firoz Khan, The National University of Malaysia
Mohd Shahrul Mohd Nadzir, The National University of Malaysia
Presenter Email: uningroyston@gmail.com
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| A large portion of volatile organic compounds, VOCs in the atmosphere is from the sea surface microlayer, SML. However, there are limited methods to determine the emissons from SML. Thermal desorption, TD sorbent tubes as a solventless extraction method couple with gas chromatopgraphy is suitable to determine VOCs emissons from SML. The main objective of this study is to develop a new method for the determination of VOCs emitted from SML by using TD sorbent tubes. VOCs emitted from SML were trapped by using a floating flux chamber. Sampling of VOCs was performed on daily basis by adsorption on Tenax Graphite, GR TD sorbent tubes using low flow pump. Samples was transported back to the laboratory and analysed by using thermal desorption unit coupled with gas chromatography mass spectrometry, TD-GC/MS. This study expect to detect a range of mono-aromatics hydrocarbons compounds comprised of benzene, toluene, ethylbenzene and xylene. The concentration of toluene compound will be the highest while benzene compound will be the lowest compare to other compounds. Development of a new method using Tenax Graphite TD sorbent tubes may be a new approach to determine VOCs emitted from SML. |
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