摘要
针对聚氯乙烯(PVC)、聚乙烯(PE)、聚丙烯(PP)、丙烯腈-丁二烯-苯乙烯共聚物(ABS)、定向聚丙烯(OPP)、聚对苯二甲酸乙二醇酯(PET)等6种典型原料的塑料制品生产,选择了广东省内5家典型生产企业,通过气袋采样法和预浓缩气相色谱-质谱联用仪系统进行了样品采集和测定,获得了塑料制品行业VOCs排放化学谱和排放因子.对企业所采用的活性炭吸附法、水雾喷淋法等VOCs处理方法,比较了VOCs废气处理前、后的差异.结果表明,所采样企业VOCs处理前、后组分均以含氧挥发性有机物(OVOCs)、芳香烃和烷烃为主;主要物种为己醛、苯乙烯、甲苯、甲基乙基酮和正十二烷等.VOCs处理前、后排放因子变化分别为1.0~8.1 g·kg^(-1)及1.5~6.8 g·kg^(-1),平均分别为4.6 g·kg^(-1)及4.3 g·kg^(-1).VOCs经处理前、后归一化臭氧反应活性(ROF)分别为2.83和2.43 g·g^(-1),主要由OVOCs和芳香烃贡献;归一化二次有机气溶胶反应活性(RSOA)分别为0.04和0.03 g·g^(-1),主要由芳香烃贡献.无论是对VOCs还是对臭氧和二次有机气溶胶反应活性,所采样企业的削减效果均不理想,应加大其处理力度,尤其需重点管控芳香烃和OVOCs.
To build the chemical profiles and evaluate the emission factors of volatile organic compounds(VOCs)emitted from plastic products industries,air samples were collected by bags in 5 typical factories using Polyvinyl Chloride(PVC),Polyethylene(PE),Polypropylene(PP),Acrylonitrile Butadiene Styrene(ABS),Oriented Polypropylene(OPP)and Polyethylene Terephthalate(PET)as raw materials.These samples were subsequently analyzed by a Preconcentration-Gas Chromatography-Mass Spectrometer/Flame Ionization Detector system(GC-MS/FID).The activated carbon adsorption method and water spray method were the main VOCs treatment technologies utilized in these factories.The differences between the VOCs emission characteristics before and after the treatment methods were compared.The results showed that the VOCs from the pre-and post-VOCs treatments in these factories were mainly composed of oxygenated VOCs(OVOCs),aromatics and alkanes.The abundant specific species were hexanal,styrene,toluene,methyl ethyl ketone and dodecane.The emission factors of VOCs from plastic products industries before and after treatments were in the ranges of 1.0 to 8.1 g·kg^(-1)and 1.5 to 6.8 g·kg^(-1),with average values of 4.6 g·kg^(-1)and 4.3 g·kg^(-1),respectively.The normalized ozone reactivity of VOCs before and after treatments were 2.83 and 2.43 g·g^(-1),respectively,mainly contributed by OVOCs and aromatics.The normalized secondary organic aerosol(SOA)reactivity of VOCs before and after treatments were 0.04 and 0.03 g·g^(-1),respectively,mainly contributed by aromatics.The reduction of the VOCs treatment facilities in the factories was inefficient for both total VOCs and their ozone and SOA reactivity.Stricter control measures should be taken to decrease VOCs emission from the plastics products industries,especially for aromatics and OVOCs.
作者
戴燕
王瑞文
谭劭康
李将永
蔡艺婷
黄晓俊
韩士杰
张春林
王伯光
DAI Yan;WANG Ruiwen;TAN Shaokang;LI Jiangyong;CAI Yiting;HUANG Xiaojun;HAN Shijie;ZHANG Chunlin;WANG Boguang(Institute for Environmental and Climate Research,Jinan University,Guangzhou 511443;Australia-China Centre for Air Quality Science and Management(Guangdong),Jinan University,Guangzhou 511443;Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality,Jinan University,Guangzhou 511443)
出处
《环境科学学报》
CAS
CSCD
北大核心
2023年第6期155-163,共9页
Acta Scientiae Circumstantiae
基金
广东省重点领域研发计划项目(No.2019B110206002)。
