沥青路面铺设VOCs排放特征及风险评估

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摘要为探究沥青路面铺设VOCs的排放特征、气味效应及毒性作用,分别对沥青路面不同铺设阶段排放的VOCs进行监测.结果显示,沥青路面铺设排放的VOCs组成以烷烃、烯烃和芳香烃为主,检出的65种VOCs浓度范围为46.69~2179 μg/m³,按照铺路流程依次降低,为路面摊铺>路面压实>路面冷却>路面常温服役,其特征VOCs为十一烷、正戊烷、丙烯、甲苯、邻二甲苯、间二甲苯、对二甲苯、甲基丙烯酸甲酯、乙酸正丁酯;芳香烃是影响沥青路面铺设臭气指数的主要污染物;沥青路面铺设VOCs致癌风险指数范围为1.89×10^-6~5.35×10^-5,主要贡献物为苯、乙苯2种致癌组分,存在较大的潜在致癌风险.

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	李婷婷
	郭送军
	黄礼海
	陈锋
	陆海涛
	刘明
	梁小明
	陈来国

关键词 ：沥青铺路, VOCs, 排放特征, 风险评估

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

收稿日期: 2020-06-02

PACS:

X511

基金资助:国家环保专项（第二次全国污染源普查）；国家重点研发计划项目（2017YFC0212606）；国家自然科学基金资助面上项目（41773130， 41573123）；中央公益性科研院所业务专项（PM-zx703-201904-081）

通讯作者: 郭送军,教授,guosj@gxu.edu.cn;陈来国,研究员,chenlaiguo@scies.org E-mail: guosj@gxu.edu.cn;chenlaiguo@scies.org

作者简介: 李婷婷(1995-),女,广西北海人,硕士,主要研究方向为大气污染.发表论文1篇.

引用本文:

李婷婷, 郭送军, 黄礼海, 陈锋, 陆海涛, 刘明, 梁小明, 陈来国. 沥青路面铺设VOCs排放特征及风险评估[J]. 中国环境科学, 2021, 41(1): 73-80. LI Ting-ting, GUO Song-jun, HUANG Li-hai, CHEN Feng, LU Hai-tao, LIU Ming, LIANG Xiao-ming, CHEN Lai-guo. Emission characteristics and health risk assessment of VOCs from asphalt pavement construction. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(1): 73-80.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2021/V41/I1/73

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