Source apportionment of biogenic and anthropogenic VOCs in Bolu plateau

Dörter, Melike; Odabaşı, Mustafa; Yeni̇soy-Karakaş, Serpil

doi:10.1016/j.scitotenv.2020.139201

Cited by 33 publications

(12 citation statements)

References 47 publications

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“…Gas-phase benzothiazole has been reported in atmospheric measurements in the contexts of freshly shredded rubber, urban traffic, and coal burning in a region with plastic production, but emissions of gas-phase benzothiazole from coastal waters are, to our knowledge, a novel finding. As benzothiazole is a common anthropogenic contaminant that could potentially be added if the water were mishandled, we confirmed the presence of benzothiazoles in the collected coastal water absent perturbations from transport into the SeaSCAPE wave channel.…”

Section: Results and Discussionmentioning

confidence: 87%

Atmospheric Benzothiazoles in a Coastal Marine Environment

Franklin

Alves

Moore

et al. 2021

Environ. Sci. Technol.

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Organic emissions from coastal waters play an important but poorly understood role in atmospheric chemistry in coastal regions. A mesocosm experiment focusing on facilitated biological blooms in coastal seawater, SeaSCAPE (Sea Spray Chemistry and Particle Evolution), was performed to study emission of volatile gases, primary sea spray aerosol, and formation of secondary marine aerosol as a function of ocean biological and chemical processes. Here, we report observations of aerosol-phase benzothiazoles in a marine atmospheric context with complementary measurements of dissolved-phase benzothiazoles. Though previously reported dissolved in polluted coastal waters, we report the first direct evidence of the transfer of these molecules from seawater into the atmosphere. We also report the first gas-phase observations of benzothiazole in the environment absent a direct industrial, urban, or rubber-based source. From the identities and temporal dynamics of the dissolved and aerosol species, we conclude that the presence of benzothiazoles in the coastal water (and thereby their emissions into the atmosphere) is primarily attributable to anthropogenic sources. Oxidation experiments to explore the atmospheric fate of gas-phase benzothiazole show that it produces secondary aerosol and gas-phase SO 2 , making it a potential contributor to secondary marine aerosol formation in coastal regions and a participant in atmospheric sulfur chemistry.

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Section: Results and Discussionmentioning

confidence: 87%

Atmospheric Benzothiazoles in a Coastal Marine Environment

Franklin

Alves

Moore

et al. 2021

Environ. Sci. Technol.

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“…Isopentane and n-pentane in the three periods have several minor peaks (e.g., 02:00 and 18:30 LST). The 02:00 LST peak is mainly from the freight trucks, and the 07:00 LST peak is most likely from traffic rush-hour emissions (Gentner et al, 2009;Zheng et al 2018). It should be noted that during the control period, the nighttime concentration significantly decreased, while the daytime concentrations of the three stages are close.…”

Section: Diurnal Variations Of Ambient Vocsmentioning

confidence: 92%

“…S8 in the Supplement) in the three periods had similar diurnal patterns to those of pentane. All of the species mentioned above are tracers of traffic emis-sion (Brito et al, 2015;Dörter et al, 2020;Yenisoy-Karakas et al, 2020). It is speculated that the control effect on muck truck is significant during the control period.…”

Section: Diurnal Variations Of Ambient Vocsmentioning

confidence: 99%

Characterization of ambient volatile organic compounds, source apportionment, and the ozone–NO<sub>x</sub>–VOC sensitivities in a heavily polluted megacity of central China: effect of sporting events and emission reductions

Shang

Yin

et al. 2021

Atmos. Chem. Phys.

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Abstract. The implementation of strict emission control during the 11th National Minority Games (NMG) in September 2019 provided a valuable opportunity to assess the impact of such emission controls on the characteristics of VOCs and other air pollutants. Here, we investigated the characteristics of VOCs and the O3–NOx–VOC sensitivity comprehensively in Zhengzhou before, during, and after the NMG by delivering field measurements combined with WRF-CMAQ (Weather Research and Forecasting Community Multiscale Air Quality) model simulations. The average mixing ratios of VOCs during the control periods were 121 ± 55 µg m−3 and decreased by about 19 % and 11 % before and after emission reduction. The ozone precursors (NOx) also decreased significantly during the control period; however, the ozone pollution was severe during the entire observation period. Positive matrix factorization analysis indicated seven major sources of ambient VOCs, including coal combustion, biomass burning, vehicle exhausts, industrial processes, biogenic emissions, solvent utilization, and liquefied petroleum gas (LPG). The results show that the major source emissions, such as coal combustion and solvent utilization, were significantly reduced during the control period. As for ozone formation potential (OFP), the value during the control period was 183 ± 115 µg m−3, which was 0.23 and 0.17 times lower than before and after the control period, respectively. Solvent utilization and combustion controls were the most important measures taken to reduce OFP during the NMG period. Control policies can effectively reduce carcinogenic risk. However, non-cancer risks of ambient VOC exposures were all exceeding the safe level (hazard quotient = 1) during the sampling periods, and emphasis on the reduction of acrolein emissions was needed. In addition, the WRF-CMAQ model simulation indicated that O3 formation was controlled by VOCs in Zhengzhou. The results of the Empirical Kinetic Modeling Approach showed that the NOx reduction in Zhengzhou might lead to higher ozone pollution. It is suggested that reduction ratios of the precursors (VOCs : NOx) should be more than 2, which can effectively alleviate ozone pollution.

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“…Journal homepage : http://www.tci-thaijo.org/index.php/aer sources such as those released from broad-leave species [2][3][4]. Some of VOC species can have direct health impact and be considered as carcinogenic substance [5][6][7].…”

Section: Applied Environmental Researchmentioning

confidence: 99%

Source Contribution of 1,3 Butadiene in the Vicinity of Petrochemical Industrial Area

et al. 2021

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Emissions and ambient concentrations of 1,3 butadiene released from the synthetic rubber industries in the largest petroleum and petrochemical complex in Thailand were evaluated in this study. The industrial emissions in this analysis were those emitted from process fugitive, combustion stack, flare, and wastewater treatment facility. It was found that wastewater treatment units were the largest emission source among other potential sources. The contribution of emission from wastewater treatment plants were about 92% of total 1,3 butadiene emission. The extent and magnitude of 1,3 butadiene in ambient air were further evaluated through the simulation of AERMOD dispersion model using these emission data together with local meteorological and topographical characteristics. Predicted annual 1,3 butadiene concentrations at every receptor were lower than its ambient air quality standard (< 0.33 μg m-3). Source apportionment analysis was performed with the objective to reveal the contribution of each emission source to the ambient concentrations at each receptor. Analytical results indicated that wastewater treatment units were the major emission source affected to the environmental concentrations of 1,3 butadiene in the study area. Evaluation of the potential adverse health impact of this chemical revealed that there may be a potential carcinogenic risk from inhalation exposure of 1,3 butadiene. Therefore, an effort in controlling emission of 1,3 butadiene should be given the priority to effectively manage the level of this compound in the environment.

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Source apportionment of biogenic and anthropogenic VOCs in Bolu plateau

Cited by 33 publications

References 47 publications

Atmospheric Benzothiazoles in a Coastal Marine Environment

Atmospheric Benzothiazoles in a Coastal Marine Environment

Characterization of ambient volatile organic compounds, source apportionment, and the ozone–NO<sub>x</sub>–VOC sensitivities in a heavily polluted megacity of central China: effect of sporting events and emission reductions

Source Contribution of 1,3 Butadiene in the Vicinity of Petrochemical Industrial Area

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Source apportionment of biogenic and anthropogenic VOCs in Bolu plateau

Cited by 33 publications

References 47 publications

Atmospheric Benzothiazoles in a Coastal Marine Environment

Atmospheric Benzothiazoles in a Coastal Marine Environment

Characterization of ambient volatile organic compounds, source apportionment, and the ozone–NO&lt;sub&gt;x&lt;/sub&gt;–VOC sensitivities in a heavily polluted megacity of central China: effect of sporting events and emission reductions

Source Contribution of 1,3 Butadiene in the Vicinity of Petrochemical Industrial Area

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Characterization of ambient volatile organic compounds, source apportionment, and the ozone–NO<sub>x</sub>–VOC sensitivities in a heavily polluted megacity of central China: effect of sporting events and emission reductions