沥青路面铺设VOCs排放特征及风险评估

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Abstract Volatile organic compounds (VOCs) at different stages of asphalt pavement construction were monitored for the sake of studying its emission characteristics, odor effect and toxicity. The results showed that 65kinds of VOCs concentration ranged from 46.69μg/m³ to 2179μg/m³, the characteristic components of which were alkanes, alkenes and aromatics. The VOCs concentration was in a gradual decrease in the asphalt pavement construction process which was arranged in the following order: pavement paving > pavement compaction > pavement cooling > pavement in use at normal temperature. And the characteristic components comprised undecane, n-pentane, propylene, toluene, o-xylene, m-xylene, p-xylene, methyl methacrylate, n-butyl acetate. Aromatics contributed mainly to the odor of asphalt pavement construction. Besides, there was a large potential cancer risk for benzene and ethylbenzene, whose lifetime cancer risk (LCR) values ranged from 1.89x10^-6~5.35x10^-5.

Key words： asphalt pavement construction VOCs emission characteristics risk assessment

Received: 02 June 2020

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X511

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	Articles by authors
	LI Ting-ting
	GUO Song-jun
	HUANG Li-hai
	CHEN Feng
	LU Hai-tao
	LIU Ming
	LIANG Xiao-ming
	CHEN Lai-guo

Cite this article:

LI Ting-ting,GUO Song-jun,HUANG Li-hai等. Emission characteristics and health risk assessment of VOCs from asphalt pavement construction[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(1): 73-80.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I1/73

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