Distribution of polycyclic aromatic hydrocarbons c

Authors: Phan Quang Thang Tatsuya Taniguchi Yoshie Nabeshima Hiroshi Bandow Nguyen Quang Trung Norimichi Takenaka

Publish Date: 2014/01/10

Volume: 7, Issue: 3, Pages: 273-281

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Abstract

This study reported the distribution of polycyclic aromatic hydrocarbons PAHs concentrations simultaneously obtained in gas/rain/particle in rain event from 2010 to 2012 in Osaka Japan A sampling method for rain and the materials of a rain collector were also surveyed Benzene and a glass bottle were used to prevent the decrease of PAHs in rainwater The average concentration of Σ9PAHs in rainwater ranged between 1749 and 64652 ng dm−3 The mean ratio of these Σ9PAHs in gas versus particles was 779 and 683  during rain and no rain respectively During rain the PAHs in particles were scavenged by rain and were incorporated via washout by collision with each other Therefore the ratio of PAHs in rainwater was similar to that in particles The low molecular weight LMWPAHs from gas were recognized as being dissolved in rain but did not affect the ratio of PAHs in rain Four rings PAH were dominant in gas/rain/particles The seasonal variation of Σ9PAHs in rainwater was reported and discussed and the PAHs levels during the winter and spring were higher compared with that of summer and autumn Furthermore the sampling method of PAHs in snow is also developedThis research was partially supported by Japan Science and Technology Agency and Japan International Cooperation Agency Science and Technology Research Partnership for Sustainable Development SATREPS project entitled “Multibeneficial measure for mitigation of climate change in Vietnam and Indochina countries by development of biomass energy”

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