摘要
研究通过对江西省7个典型行业共65家企业有组织和无组织排放的VOCs进行离线采样,并采用气相色谱-质谱联用技术(GC-MS)分析其组分和物种,进一步明确和对比不同行业VOCs的源排放特征.同时,基于VOCs关键物种浓度估算了不同行业有组织和无组织排放对大气臭氧和SOA的生成潜势,并对各行业排放VOCs物种的潜在致癌和非致癌风险进行了评价.结果表明,不同行业VOCs排放存在显著差异,其中汽车制造业、印刷业有组织和无组织VOCs排放量相对较低,而家具制造业的排放量明显偏高;各行业中有组织排放的烷烃和OVOCs占比较高,而在无组织排放中芳烃和OVOCs占比较高.此外,臭氧生成潜势(OFP)计算结果表明,有机化工业、塑料制品业和家具制造业的OFP较高,主要由OVOCs和芳香烃贡献.家具制造业的二次有机气溶胶(SOA)生成潜势远高于其他行业,苯系物是其主要贡献物种.在对人体健康风险评估中,发现乙醛在所有行业中均为高致癌风险物质,其在塑料制品行业的致癌风险最为突出(风险值高达3.05×10^(-5)),丙烯醛在医药制造业中非致癌风险显著(HI值高达18.96).由此可见,江西省在PM_(2.5)和O_(3)协同控制方面,应重点关注由有机化工、医药制造、塑料制品和家具制造行业排放的烯烃、芳烃和OVOCs;而在降低对人体健康的影响方面,应加强对家具制造、塑料制品和有机化工行业无组织OVOCs排放的管控.
The study further clarified and compared the source emission characteristics of VOCs from different industries by sampling VOCs from a total of 65 enterprises with organized and unorganized emissions from seven typical industries in Jiangxi Province offline and analyzing their components and species by gas chromatography-mass spectrometry(GC-MS).Meanwhile,the generation potentials of organized and unorganized emissions from different industries for atmospheric ozone and SOA were estimated based on the concentrations of key species of VOCs,and the potential carcinogenic and non-carcinogenic risks of the VOCs species emitted from each industry were evaluated.The results showed significant differences in VOCs emissions from different industries,with relatively low organized and unorganized VOCs emissions from the automobile manufacturing and printing industries,whereas the emissions from the furniture manufacturing industry were significantly higher.Alkanes and OVOCs accounted for a relatively high percentage of the organized emissions in each industry,while aromatics and OVOCs accounted for a relatively high percentage of the unorganized emissions.In addition,the results of ozone formation potential(OFP)calculations showed that the OFPs of the organic chemical industry,plastic products industry,and furniture manufacturing industry were higher,mainly contributed by OVOCs and aromatic hydrocarbons.The secondary organic aerosol(SOA)generation potential of the furniture manufacturing industry was higher than that of the other industries,with benzene as the main contributing species.In the human health risk assessment,acetaldehyde was found to be a high carcinogenic risk substance in all industries,with its most prominent carcinogenic risk in the plastics industry(risk value as high as 3.05×10^(-5))and a significant non-carcinogenic risk for acrolein in the pharmaceutical manufacturing industry(HI value as high as 18.96).Jiangxi Province should focus on olefins,aromatics,and OVOCs emitted by the organic chemical,pharmaceutical manufacturing,plastic products,and furniture manufacturing industries in terms of synergistic control of PM_(2.5) and O_(3).Additionally,in terms of reducing the impacts on human health,the control of unorganized OVOCs emissions from the furniture manufacturing,plastic products,and organic chemical industries should be strengthened.
作者
朱中华
李亲凯
涂翔
ZHU Zhong-hua;LI Qin-kai;TU Xiang(School of Civil Engineering and Architecture,East China Jiao Tong University,Nanchang 330013,China;Jiangxi Academy of Eco-environmental Sciences and Planning,Nanchang 330039,China;East China Jiao Tong University-Jiangxi Academy of Eco-environmental Sciences and Planning,Jiangxi Province Graduate Workstation,Nanchang330039,China)
出处
《环境科学》
北大核心
2025年第8期5035-5044,共10页
Environmental Science
基金
国家自然科学基金项目(22466020,42261077)
江西省自然科学基金项目(20224BAB213053)。
作者简介
朱中华(1998-),男,硕士研究生,主要研究方向为大气环境化学与大气污染控制,E-mail:2022018085701003@ecjtu.edu.cn;通信作者:涂翔,E-mail:tuxiang527@163.com。
