Elucidating pollution characteristics, temporal variation and source origins of carbonaceous species in Xinxiang, a heavily polluted city in North China

Liu, Huanjia; Jia, Mengke; Tao, Jie; Yao, Dan; Li, Juexiu; Zhang, Ruiqin; Li, Lanqing; Xu, Mengyuan; Fan, Yujuan; Liu, Yongli; Cheng, Ke

doi:10.1016/j.atmosenv.2023.119626

Cited by 3 publications

(1 citation statement)

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“…The correlation between carbon components and gaseous pollutants in autumn and winter in Jincheng City was stronger than that in summer. Clearly, EC, POC, and SOC had significant positive correlations with NO2 and CO in winter, indicating may be obviously influenced by industrial emissions, coal combustion emissions and vehicle emissions (Liu et al, 2023;Moutinho et al, 2020). At the same time, the strong correlation between SO2, NO2, and CO in winter also indicates that the influence of industrial emissions such as coal combustion cannot be ignored.…”

Section: Source Analysis Of Carbonaceous Componentsmentioning

confidence: 98%

Pollution Characteristics and Source Analysis of Carbonaceous Components in PM2.5 in a Typical Industrial City

Ma,

Hu,

Yan

et al. 2024

Aerosol Air Qual. Res.

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Carbonaceous components are important components of fine atmospheric particulate matter (PM2.5) and can affect the local environment, climate, and human health. In this study, online observation data from September 1, 2022, to August 31, 2023, were used to analyze the carbonaceous components, namely, organic carbon (OC) and elemental carbon (EC), in PM2.5 in Jincheng, which is a typical industrial city. The OC and EC concentrations and annual average ratio of OC/EC in Jincheng were 5.54 µg m -3 , 0.98 µg m -3 , and 5.67, respectively. The concentration change in carbonaceous components shows strong seasonality and daily variation characteristics, and the influence of biomass combustion on carbonaceous components in winter cannot be ignored. OC was divided into primary organic carbon (POC) and secondary organic carbon (SOC) using the minimum R squared (MRS) method, and the highest and lowest amounts of SOC were generated in winter and summer, respectively. However, owing to the photochemical reaction that produces SOC in summer, the SOC/OC ratio was high. The high OC/EC ratio in summer was strongly dependent on the O3 concentration, proving that more SOC was formed through photochemical oxidation in summer, and multi-phase inversion may be the main method of SOC generation in winter. Correlation analysis between the carbonaceous components and gaseous pollutants in Jincheng showed that the carbon components in Jincheng City in autumn and winter were significantly influenced by industrial emissions, coal combustion emissions and vehicle emissions. Vehicle emissions were the main source of carbon components in Jincheng during summer. The formation of SOC was related to other VOCs emission sources. Our results show that carbon aerosol pollution in typical industrial cities, such as Jincheng, can be further alleviated by strengthening the control of vehicle exhaust emissions, fuel combustion, and biomass combustion.

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Section: Source Analysis Of Carbonaceous Componentsmentioning

confidence: 98%