New understanding of source profiles: Example of the coating industry

Gao, Song; Zhang, Shuwei; Che, Xiang; Ma, Yiran; Chen, Xi; Duan, Yusen; Fu, Qingyan; Wang, Shanshan; Zhou, Bin; Wei, Chuanming; Jiao, Zheng

doi:10.1016/j.jclepro.2022.132025

Cited by 8 publications

(2 citation statements)

References 34 publications

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“…Of all the VOCs assessed, 22 compounds had significantly higher median concentrations at ground level than in the balloon (Table 2). These compounds were mainly aromatics, with o-, m-, p-xylenes associated with road traffic (Truc and Kim Oanh 2007;Caselli et al 2010), halogenated compounds such as tetrachloroethylene, commonly used in industrial dry-cleaning processes in the automotive industry (Zhang et al 2020b), and methyl, ethyl, propyl, and butyl acetates, which are used as solvents or coatings in paints (Zhang et al 2020b;Gao et al 2022). α-Pinene, which is mostly emitted by surface vegetation, and acetaldehyde and acrolein + acetone were also among the compounds with higher concentrations at ground level, which suggest a local primary emission source.…”

Section: Vocs Concentrationsmentioning

confidence: 99%

Measurement of volatile organic compounds using tethered balloons in a polluted industrial site in Catalonia (Spain)

Díez-Palet,

Jaén,

Marco

et al. 2024

Environ Sci Pollut Res

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Understanding the chemical composition of volatile organic compounds (VOCs) near emission sources and in the background atmosphere above the mixing layer height (MLH) provides insight into the fate of VOCs and is essential for developing effective air pollution control strategies. Unfortunately, knowledge of the qualitative and quantitative changes of VOCs and their vertical transport in the atmosphere is limited due to challenging experimental setups. In this study, an innovative method using tethered balloons was tested and implemented to sample 40 VOCs and O3 below and above the MLH at an industrial site in Spain. VOC and O3 samples were collected with different types of sorbent cartridges and analyzed using chromatographic techniques. Overall, a decrease in VOC concentration with altitude was observed along with a homogeneous chemical composition up to 300 m AGL. This decrease with altitude denoted the primary origin of these VOCs, which were strongly influenced by industrial processes and the traffic emissions in the area. Conversely, O3 concentrations were notably higher at balloon level and increased during nighttime temperature inversion episodes in those samples collected above the mixing layer. Ground samples contained freshly emitted pollutants of industrial origin, while balloon samples consisted of aged pollutants from traffic, other combustion sources, or from a secondary origin. This study is the first to assess the vertical composition of VOCs at a site of these characteristics and demonstrates that tethered balloons are a cost-effective method for studying air pollution dynamics from the ground to higher altitudes in the low troposphere.

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Section: Vocs Concentrationsmentioning

confidence: 99%

Measurement of volatile organic compounds using tethered balloons in a polluted industrial site in Catalonia (Spain)

Díez-Palet,

Jaén,

Marco

et al. 2024

Environ Sci Pollut Res

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“…3). Large variations of components and their percentages in industrial processes are attributed to the manufacturing processes, raw material, pollution control measures and so on (Ji et al, 2017;Bi et al, 2019;Gao et al, 2022). For example, Ca, Al, OC and SO4 2are found to have the highest percentage in cement sources (Guo et al, 2021); Fe, Si and SO4 2are the most abundant species in steel industry emission (Guo et al, 2017).…”

Section: Model Configurationmentioning

confidence: 99%

The underappreciated impact of emission source profiles on the simulation of PM_2.5 components: New evidence from sensitivity analysis

Zhong-wei

Han

Hua

et al. 2022

Preprint

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Abstract. The chemical transport model (CTM) is an essential tool for air quality prediction and management, widely used in air pollution control and health risk assessment. However, the current models do not perform very well in simulating PM2.5 components. Studies suggested that the uncertainties of model chemical mechanism, source emission inventory and meteorological field can cause inaccurate simulation results. Still, the emission source profile of PM2.5 has not been fully taken into account in current numerical simulation. This study aims to answer (1) Whether the variation of source profile adopted in chemical transport models (CTMs) has an impact on the simulation of PM2.5 chemical components? (2) How much does it impact? (3) How does the impact work? Based on the characteristics and variation rules of chemical components in typical PM2.5 sources, different simulation scenarios were designed and the sensitivity of components simulation results to PM2.5 sources profile was explored. Our findings showed that the influence of source profile changes on simulated PM2.5 concentration was insignificant, but its impact on PM2.5 components could not be ignored. The variations of simulated components ranged from 8 % to 167 % under selected different source profiles, and simulation results of some components were sensitive to the adopted PM2.5 source profile in CTMs. These influences are connected to the chemical mechanisms of the model since the variation of species allocations in emission sources directly affected the thermodynamic equilibrium system. We also found that the perturbation of the PM2.5 source profile caused the variation of simulated gaseous pollutants, which indirectly indicated that the perturbation of the source profile affected the simulation of secondary PM2.5 components. Given the vital role of air quality simulation in environment management and health risk assessment, the representativeness and timeliness of source profile should be considered.

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Research on nonsteady-state adsorption and regulation towards stabler adsorption for benzene over single-wall carbon materials

Feng,

Zhuo,

2023

Environ Sci Pollut Res

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New understanding of source profiles: Example of the coating industry

Cited by 8 publications

References 34 publications

Measurement of volatile organic compounds using tethered balloons in a polluted industrial site in Catalonia (Spain)

Measurement of volatile organic compounds using tethered balloons in a polluted industrial site in Catalonia (Spain)

The underappreciated impact of emission source profiles on the simulation of PM_2.5 components: New evidence from sensitivity analysis

Research on nonsteady-state adsorption and regulation towards stabler adsorption for benzene over single-wall carbon materials

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New understanding of source profiles: Example of the coating industry

Cited by 8 publications

References 34 publications

Measurement of volatile organic compounds using tethered balloons in a polluted industrial site in Catalonia (Spain)

Measurement of volatile organic compounds using tethered balloons in a polluted industrial site in Catalonia (Spain)

The underappreciated impact of emission source profiles on the simulation of PM2.5 components: New evidence from sensitivity analysis

Research on nonsteady-state adsorption and regulation towards stabler adsorption for benzene over single-wall carbon materials

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Product

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The underappreciated impact of emission source profiles on the simulation of PM_2.5 components: New evidence from sensitivity analysis