Wu Jian, Gao Song, Chen Xi, Yang Yong, Fu Qing-Yan, Che Xiang, Jiao Zheng
School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
Shanghai Environmental Monitoring Center, Shanghai 200235, China.
Huan Jing Ke Xue. 2020 Apr 8;41(4):1582-1588. doi: 10.13227/j.hjkx.201908203.
SUMMA canisters were used to collect the exhaust gas from eight coating manufacturers in East China. A total of 106 VOCs was determined by gas chromatography-mass spectrometry (GC-MS) method to identify the emission characteristics of volatile organic compounds (VOCs) and the contribution of VOCs emitted by various companies to ozone generation, and the source profiles of solvent-based and water-based coatings were established. The results show that the characteristic components of VOCs in the coating manufacturing industry are mainly aromatic hydrocarbons and oxygenated hydrocarbons. The concentration ranges from 65.5% to 99.9%. The VOC emissions of solvent-based coatings were mainly aromatic hydrocarbons, accounting for 63.0%-94.0% of total VOCs; VOC emissions from waterborne coatings were mainly composed of oxygenated hydrocarbons, accounting for 54.5% to 99.9% of the total VOCs. -xylene (32.4%), ethylbenzene (19.0%), and ethyl acetate (12.1%) were solvent-based coating sources, and ethyl acetate (83.7%) and 2-butyl ketone (8.0%) were the sources of waterborne coating emissions. Aromatic hydrocarbons and oxygenated hydrocarbons are the main active components in the coating manufacturing industry, with a total contribution to the ozone generation potential (OFP) ranging from 92.9% to 99.9%. Source reactivity (SR) analysis showed that the VOCs per unit mass of water-based coatings contributed much less to the formation of ozone than solvent-based coatings, so water-based coatings significantly reduced the potential for ozone generation. Studies have shown that for VOC pollution control in the coating manufacturing industry, attention should be paid to the VOCs that contribute more to the ozone-forming potential of aromatic hydrocarbons and oxygenated hydrocarbons, and VOC emissions should be controlled from the source.
采用SUMMA采样罐收集中国东部8家涂料生产厂家的废气。通过气相色谱 - 质谱联用（GC-MS）方法共测定了106种挥发性有机化合物（VOCs），以确定挥发性有机化合物（VOCs）的排放特征以及各公司排放的VOCs对臭氧生成的贡献，并建立了溶剂型和水性涂料的源谱。结果表明，涂料制造业中VOCs的特征成分主要是芳烃和含氧烃。其含量范围为65.5%至99.9%。溶剂型涂料的VOC排放主要为芳烃，占总VOCs的63.0% - 94.0%；水性涂料的VOC排放主要由含氧烃组成，占总VOCs的54.5%至99.9%。 - 二甲苯（32.4%）、乙苯（19.0%）和乙酸乙酯（12.1%）是溶剂型涂料的排放源，乙酸乙酯（83.7%）和2 - 丁酮（8.0%）是水性涂料的排放源。芳烃和含氧烃是涂料制造业中的主要活性成分，对臭氧生成潜势（OFP）的总贡献范围为92.9%至99.9%。源反应活性（SR）分析表明，单位质量的水性涂料中的VOCs对臭氧形成的贡献远小于溶剂型涂料，因此水性涂料显著降低了臭氧生成的潜力。研究表明，对于涂料制造业中的VOC污染控制，应关注对芳烃和含氧烃的臭氧形成潜势贡献较大的VOCs，并应从源头控制VOC排放。
