Modified Method for Determination of PAHs in Ambient Air in Bangkok Using Gas Chromatography-Mass Spectrometry
Keywords:
Polycyclic aromatic hydrocarbons (PAHs), Gas chromatography-mass spectrometry (GC-MS), Ambient air, BangkokAbstract
The PAH analysis method was modified using HP-5MS column. Sampling procedure was based on the NIOSH method no.5515. Sorbent tube (XAD-2) and PTFE filter were used to collect PAHs in both gaseous and particulate phases, respectively. The air samples were extracted by n-hexane and analyzed by gas chromatography-mass spectrometry. Results showed that the detection limit of 16 PAHs ranged from 0.6 to 2.4 ng. The percent recoveries of 16 PAHs for sorbent tubes (XAD-2) and PTFE filters were 78.15-90.74% and 78.23-111.55%, respectively. The percent relative standard deviations were both less than 11%. The analysis of 20 air samples; 10 samples from the roadside and the other 10 samples from the local market in Bangkok found that total PAH concentrations were 520.56 ± 61.04 and 1248.44 ± 877.93 ng/m3, respectively. The total PAH concentrations from the local market were two times higher than those from the roadside.Downloads
How to Cite
Yaowabut, N., Kongtip, P., & Yoosook, W. (2017). Modified Method for Determination of PAHs in Ambient Air in Bangkok Using Gas Chromatography-Mass Spectrometry. Journal of Health Research, 26(1), 7–13. Retrieved from https://he01.tci-thaijo.org/index.php/jhealthres/article/view/84625
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ORIGINAL RESEARCH ARTICLE