The Contributions of PAHs and Dioxins to Aryl Hydrocarbon Receptor Binding Activity of Airborne Particles in Beijing, China and Kanazawa, Japan

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  • BEKKI Kanae
    Division of Environmental Science and Engineering, Graduate School of Natural Science and Technology, Kanazawa University
  • TAKIGAMI Hidetaka
    Research Center for Material Cycles and Waste Management, National Institute for Environmental Studies
  • SUZUKI Go
    Research Center for Material Cycles and Waste Management, National Institute for Environmental Studies
  • TANG Ning
    Division of Pharmaceutical Chemistry and Biology, Graduate School of Natural Science and Technology, Kanazawa University
  • TORIBA Akira
    Division of Pharmaceutical Chemistry and Biology, Graduate School of Natural Science and Technology, Kanazawa University
  • KAMEDA Takayuki
    Division of Pharmaceutical Chemistry and Biology, Graduate School of Natural Science and Technology, Kanazawa University
  • HAYAKAWA Kazuich
    Division of Pharmaceutical Chemistry and Biology, Graduate School of Natural Science and Technology, Kanazawa University

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Other Title
  • 中国・北京及び日本・金沢の大気が示すＡｈＲ活性化作用へのＰＡＨ類及びダイオキシン類の寄与
  • チュウゴク ペキン オヨビ ニホン カナザワ ノ タイキ ガ シメス AhR カッセイカ サヨウ エ ノ PAHルイ オヨビ ダイオキシンルイ ノ キヨ
  • The contribution of PAHs and dioxins to aryl hydrocarbon receptor binding activity of airborne particles in Beijing and Kanazawa, Japan

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Abstract

Polycyclic aromatic hydrocarbons (PAHs) and dioxins have several toxic properties, including mutagenicity, carcinogenicity and reproductive toxicity. PAHs mainly originate from the burning of petroleum and coal, while dioxins originate mainly from waste incineration and agrochemicals. Both PAHs and dioxins have aryl hydrocarbon receptor (AhR) binding activity which is related to toxicity of PAHs and dioxins.<BR>In this study, we evaluated AhR binding activity of airborne particles collected in Beijing, China and Kanazawa, Japan by DR-CALUX and the contribution of PAHs and dioxins to this activity. AhR binding activity of airborne particles in Beijing (1,200 ng • m-3) was four hundred times higher than in Kanazawa (2.7 ng • m-3). The composition of PAHs didn′t show large difference in Beijing and Kanazawa. The contribution of the PAHs to CALUX-TEQ was higher than dioxins and especially high in Kanazawa (10.4 %). These results suggest that PAHs show large contribution to the toxicity of airborne particles, and other kinds of PAH and PAH related compounds will also contribute to that toxicity. The difference of concentration and composition of these compounds result in the different level of toxicity of airborne particles in each city.

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