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Emission factors and source profiles of volatile organic compounds from typical industrial sources in Guangzhou, China. | LitMetric

Emission factors and source profiles of volatile organic compounds from typical industrial sources in Guangzhou, China.

Sci Total Environ

Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for On-line Source Apportionment System of Air Pollution, Jinan University, Guangzhou, PR China; Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou, PR China. Electronic address:

Published: April 2023

AI Article Synopsis

  • Volatile Organic Compounds (VOCs) are crucial for ozone and fine particulate matter formation, and understanding their emission characteristics is essential for effective control strategies.
  • A study in Guangzhou, China, measured VOC emissions across five industrial sectors, revealing significant variation in emission factors and VOC source profiles, particularly for new sources like light guide plates and photoresist masks.
  • The shipbuilding sector exhibited the highest ozone formation potential from emissions, and controlling aromatic and OVOC emissions is vital; additionally, 1,2-dibromoethane poses high carcinogenic risks and requires prioritization for control.

Article Abstract

Volatile organic compounds (VOCs) are important precursors of ozone (O) and fine particulate matter (PM). An accurate depiction of the emission characteristics of VOCs is the key to formulating VOC control strategies. In this study, the VOC emission factors and source profiles in five industrial sectors were developed using large-scale field measurements conducted in Guangzhou, China (100 samples for the emission factors and 434 samples for the source profile measurements). The emission factors based on the actual measurement method and the material balance method were 1.6-152.4 kg of VOCs per ton of raw materials (kg/t) and 3.1-242.2 kg/t, respectively. The similarities between the emission factors obtained using these two methods were examined, which showed a coefficient of divergence (CD) of 0.34-0.72. Among the 33 subdivided VOC source profiles developed in this study, sources including light guide plate (LGP), photoresist mask, and plastic products were the first time developed in China. Due to regional diversities in terms of production technologies, materials, and products, the emission characteristics of the VOCs varied, even in the same sector, thereby demonstrating the importance of developing localized source profiles of VOCs. The ozone formation potential (OFP) of the shipbuilding and repair sector from fugitive emissions was the highest value among all the industrial sectors. Controlling the emissions of aromatics and OVOCs was critical to reducing the O growth momentum in industrial sectors. In addition, 1,2-dibromoethane showed high carcinogenic risk potentials (CRPs) during most of the industrial sectors and should be prioritized for controlling.

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Source
http://dx.doi.org/10.1016/j.scitotenv.2023.161758DOI Listing

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