Influence of seasonal variability on source characteristics of VOCs at Houston industrial area

Sadeghi, Bavand; Pouyaei, Arman; Choi, Yunsoo; Rappenglueck, B.

doi:10.1016/j.atmosenv.2022.119077

Cited by 13 publications

(9 citation statements)

References 102 publications

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“…As shown in Table 1, concentrations of TVOCs in different industrial sites were compared. The results demonstrated that TVOCs concentrations in this study were significantly higher than those in Beijing [38], Nanjing [17], Shanghai [39], Houston [40], Taiyuan [11] and Wuhan [22], especially OVOCs. This is probably due to the more comprehensive VOC monitoring instruments used in this study, with the simultaneous use of DNPH tubes for aldehydes and ketones on the basis of GC-MS/FID (standard gases including PAMS, TO15, and domestic OVOC standard gases), which resulted in more OVOCs species measured in this study.…”

Section: General Characteristics Of Vocsmentioning

confidence: 51%

“…This is probably due to the more comprehensive VOC monitoring instruments used in this study, with the simultaneous use of DNPH tubes for aldehydes and ketones on the basis of GC-MS/FID (standard gases including PAMS, TO15, and domestic OVOC standard gases), which resulted in more OVOCs species measured in this study. Some previous studies considered only non-methane hydrocarbon species, ignoring the effects of OVOCs [17,18,40,41].…”

Section: General Characteristics Of Vocsmentioning

confidence: 99%

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Characteristics, Secondary Transformation Potential and Health Risks of Atmospheric Volatile Organic Compounds in an Industrial Area in Zibo, East China

Wang

Liu

et al. 2023

Atmosphere

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As an important anthropogenic source of volatile organic compounds (VOCs), industrial emissions have a significant impact on air quality and human health. In this study, the characteristics, chemical reactivities, and health risks of VOCs around an industrial park in Zibo were analyzed at two sampling sites. The results showed that the concentrations of total VOCs at Dongzhang Community (DZ) and Special School (SS) sites were 113.12 ppb and 139.40 ppb, respectively, with oxygenated VOCs (OVOCs) as the most abundant species, accounting for 42–45%, followed by alkanes (19.3–19.6%). Diurnal variation of OVOCs exhibited noticeable peaks at 3:00, which may be related to the nighttime sneaky emissions of some enterprises. OVOCs were the species with the highest photochemical activity, with an average contribution of 56.5% to OH radical loss rate and 57% to ozone generation. In addition, OVOCs contributed 40% to secondary organic aerosol formation potential at both sites, second only to aromatics (55%). Acrolein and 1,2-dichloropropane presented the highest non-cancer and cancer risks to human health. The results highlight the importance of OVOCs in some industrial areas.

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Section: General Characteristics Of Vocsmentioning

confidence: 51%

Section: General Characteristics Of Vocsmentioning

confidence: 99%

Characteristics, Secondary Transformation Potential and Health Risks of Atmospheric Volatile Organic Compounds in an Industrial Area in Zibo, East China

Wang

Liu

et al. 2023

Atmosphere

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“…C2–C5 alkanes have been attributed to oil and gas activity within Colorado, and prior PMF studies have used these key species to identify refinery emissions and oil and gas activity factors ( Lyu et al, 2021 ; Pollack et al, 2021 ; Thompson et al, 2014 ; Buzcu and Fraser, 2006 ). When compared to EPA speciate profiles, the high concentrations of butanes and pentanes, along with isoprene in the CC factor, suggests this factor may also include some evaporative and biogenic emissions ( Harley et al, 1992 ; Sadeghi et al, 2022 ; Sharkey et al, 2008 ).…”

Section: Resultsmentioning

confidence: 99%

“…Prior studies have specified factors enriched in aromatics and C6–C9 alkanes as liquid or unburned gasoline fuel ( Harley et al, 1992 ; Na and Pyo Kim, 2007 ). However, in areas with high oil and gas activity, this factor has also been identified as short-lived oil and gas emissions ( Abeleira et al, 2017 ; Sadeghi et al, 2022 ; Bari and Kindzierski, 2018 ). The liquid gasoline/short-lived oil and gas (OG) factors show similar diurnal trends as the vehicle exhaust factors in some solutions (CE, CW, G) and as the oil extraction, processing, and evaporation factors in others (CS) ( Fig.…”

Section: Resultsmentioning

confidence: 99%

VOC source apportionment: How monitoring characteristics influence positive matrix factorization (PMF) solutions

Frischmon,

Hannigan

2024

Atmospheric Environment: X

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“…In recent years, regional atmospheric pollution events have occurred frequently around the world, with many areas suffering severe haze episodes in autumn and winter, as well as O 3 pollution in summer (Uttamang et al, 2020;Sadeghi et al, 2022;Yan et al, 2018;Yadav et al, 2019;Zhang et al, 2018). Volatile organic compounds (VOCs) are important precursors of secondary pollutants such as O 3 and secondary organic aerosols, and the study of VOCs is a primary focus among the scientific community and relevant governing bodies (Liu et al, 2019a;S.…”

Section: Introductionmentioning

confidence: 99%

Measurement report: Intra- and interannual variability and source apportionment of volatile organic compounds during 2018–2020 in Zhengzhou, central China

Shang

Wang

et al. 2022

Atmos. Chem. Phys.

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Abstract. Ambient volatile organic compounds (VOCs) were measured continuously from January 2018 to December 2020 at an urban site in Zhengzhou (China) to investigate their characteristics, sources, atmospheric oxidation capacity (AOC), and chemical reactivity. During the sampling period, the total concentration of observed VOCs was 94.3±53.1 µg m−3, and alkanes were the major VOC species, accounting for 58 % of the total. During the sampling period, the interannual variation in VOCs gradually reduced from 113.2±65.2 µg m−3 in 2018 to 90.7±52.5 µg m−3 in 2019 and 79.1±41.7 µg m−3 in 2020. Ethane and propane were the top two most abundant species during the 3-year observation period. Results showed that the total AOC, dominated by OH radical reactions, was 7.4×107 molec. cm−3 s−1. Total OH reactivity was 45.3 s−1, and it was mainly contributed by NOx. The AOC and ⚫OH reactivity both exhibited well-defined seasonal and interannual patterns. Therefore, control strategies should focus on the key species given their interannual and seasonal variations. Meanwhile, diagnostic ratios of VOC species indicated that VOCs in Zhengzhou were greatly affected by vehicle emissions and liquid petroleum gas/natural gas (LPG/NG). Positive matrix factorization analysis identified six sources: industrial sources, solvent use, vehicle emissions, LPG/NG, fuel burning, and biogenic sources. Vehicle emissions and industrial sources made the largest contributions to VOC emissions in each of the 3 years. The proportion of the contributions of vehicle emissions and LPG/NG increased with each passing year. However, the proportion of industrial and solvent sources presented a decreasing trend, which reflects the remarkable effect of control policies. The effect of VOCs on O3 formation suggests that vehicle emissions and solvent use remain key sources. Therefore, it is necessary to formulate effective strategies for reducing ground-level O3, and those sources mentioned above should be strictly controlled by the regulatory authorities.

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Influence of seasonal variability on source characteristics of VOCs at Houston industrial area

Cited by 13 publications

References 102 publications

Characteristics, Secondary Transformation Potential and Health Risks of Atmospheric Volatile Organic Compounds in an Industrial Area in Zibo, East China

Characteristics, Secondary Transformation Potential and Health Risks of Atmospheric Volatile Organic Compounds in an Industrial Area in Zibo, East China

VOC source apportionment: How monitoring characteristics influence positive matrix factorization (PMF) solutions

Measurement report: Intra- and interannual variability and source apportionment of volatile organic compounds during 2018–2020 in Zhengzhou, central China

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