POLLUTION CHARACTERISTICS OF PM<sub>2.5</sub> AND O<sub>3</sub> IN THE PEARL RIVER DELTA AND THE SENSITIVITY ANALYSIS OF VOCs COMPONENTS

ZHOU Sheng; HUANG Bao-yuan; CHEN Hui-ying; LIN Shao-xiong

doi:10.13205/j.hjgc.202001006

Volume 38 Issue 1

Mar. 2020

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ZHOU Sheng, HUANG Bao-yuan, CHEN Hui-ying, LIN Shao-xiong. POLLUTION CHARACTERISTICS OF PM2.5 AND O3 IN THE PEARL RIVER DELTA AND THE SENSITIVITY ANALYSIS OF VOCs COMPONENTS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(1): 42-47,92. doi: 10.13205/j.hjgc.202001006

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ZHOU Sheng, HUANG Bao-yuan, CHEN Hui-ying, LIN Shao-xiong. POLLUTION CHARACTERISTICS OF PM_2.5 AND O₃ IN THE PEARL RIVER DELTA AND THE SENSITIVITY ANALYSIS OF VOCs COMPONENTS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(1): 42-47,92. doi: 10.13205/j.hjgc.202001006

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POLLUTION CHARACTERISTICS OF PM_2.5 AND O₃ IN THE PEARL RIVER DELTA AND THE SENSITIVITY ANALYSIS OF VOCs COMPONENTS

doi: 10.13205/j.hjgc.202001006

1. Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China;
2. South China Institute of Environmental Science, MEP, Guangzhou 510655, China;
3. Guilin University of Technology, Guilin 541006, China;
4. Zhaoqing Environmental Technology Centre, Zhaoqing 526060, China

Received Date: 2019-06-30

Abstract

Abstract

The pollution characteristics of PM_2.5, O₃, and volatile organic compound (VOCs) were analyzed in the Pearl River Delta, China. The sensitive components with greater influence on the formation of secondary organic aerosol (SOA) and O₃ were also screened. The results indicated that there was obvious difference in seasonal variation of PM_2.5 and O₃ concentrations in the Pearl River Delta. The concentrations were the highest in January and October for PM_2.5 and O₃, respectively. The VOCs was dominated with alkane, accounting for 64.2% of the total VOCs mass content, followed by aromatics and alkene. The components with the highest content were butane, isopentane, isobutane and cyclohexane. The SOA generation potential was mainly contributed by aromatics, accounting for 78.5% of the total generation potential. The components with the highest SOA generation potential were toluene, m, p-xylene and ethylbenzene. The O₃ generation potential was mainly contributed by alkene, accounting for 42.3% of the total generation potential, followed by aromatics (34.2%) and alkane (23.5%). The components with higher O₃ generation potential were propylene, isopentadiene and 1-butene. It was suggested that priority control should be given to the sensitive components of VOCs emitted from vehicle exhaust, solvent volatilization, paint usage, and petrochemical industry to alleviate the PM_2.5 and O₃ pollution effectively in the Pearl River Delta.
- PM_2.5,
- O₃,
- volatile organic compound,
- secondary organic aerosol,
- ozone generation potential

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