Source profiles and emission factors of VOCs from solvent-based architectural coatings and their contributions to ozone and secondary organic aerosol formation in China. (July 2021)

• Record Type: Journal Article
• Authors: Gao, Meiping; Teng, Wei; Du, Zhenxia; Nie, Lei; An, Xiaoshuan; Liu, Wenwen; Sun, Xuechun; Shen, Zhengchao; Shi, Aijun
• Is Part Of: Chemosphere. Volume 275(2021)
• Publication Date: 2021-07
• Subjects: Solvent-based architectural coating emissions -- Volatile organic compounds (VOCs) -- Emission factors and inventories -- Source profiles -- Ozone and secondary organic aerosol (SOA) -- Priority control analysis; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2021.129815
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: Volatile organic compounds (VOCs) from solvent-based architectural coatings (SBACs) play an important role in photochemical air pollution with increasing consumption of architectural coatings in China. In this study, we collected 148 typical SBACs of 3 types in China. The TVOC emission factors and source profiles were established, the contributions of SBACs to ozone and secondary organic aerosol (SOA) formation were investigated. The VOC emissions and O3 and SOA amounts formed in chemical reactions from SBACs in 2017 were estimated. Key organic groups and VOC species with high reactivity were identified. According to the results, the TVOC emission factors were 507.17 g L −1 for solvent-based anticorrosive coatings, 381.34 g L −1 for solvent-based floor coatings and 459.68 g L −1 for solvent-based fire-retardant coatings. The VOC emissions were 186, 902.11 t, 88, 225.41 t and 71, 352.32 t; the O3 amounts formed were 742, 001.39 t, 397, 896.60 t and 244, 738.46 t; the SOA amounts formed were 3934.29 t, 2488.04 t and 1104.61 t, respectively, from 3 types of SBACs in 2017. The O3 production factors were 1781.82 g O3 (kg paint) −1, 1457.50 g O3 (kg paint) −1 and 1176.63 g O3 (kg paint) −1, the SOA production factors were 9.45 g SOA (kg paint) −1, 9.11 g SOA (kg paint) −1 and 5.31 g SOA (kg paint) −1, for 3 types of SBACs. Priority should be given to organic group of aromatics and top 17 VOC species with high reactivity for O3 and SOA eliminating strategies, especially three xylenes (o-xylene, m-xylene and p-xylene), ethylbenzene, trimethyl benzenes (1, 3, 5-trimethyl benzene, 1, 2, 3-Trimethyl benzene) and toluene. Highlights: The TVOC emission factors and source profiles for solvent-based architectural coatings （SBACs）in China were obtained. The VOC emissions and 03 and SOA amounts formed in chemical reactions from SBACs were estimated. Aromatics and esters were the most abundant organic classes in SBACs. The organic group of aromatics and the top 17 VOC species with high reactivity for O3 and SOA elimination were identified.