The variations in volatile organic compounds based on the policy change for Omicron in the traffic hub of Zhengzhou DOI Creative Commons
Bowen Zhang, Dong Zhang, Zhe Dong

и другие.

Atmospheric chemistry and physics, Год журнала: 2024, Номер 24(23), С. 13587 - 13601

Опубликована: Дек. 10, 2024

Abstract. Online volatile organic compounds (VOCs) were monitored before and after the Omicron policy change at an urban site in polluted Zhengzhou from 1 December 2022 to 31 January 2023. The characteristics sources of VOCs investigated. daily mean concentrations PM2.5 total (TVOCs) ranged 53.5 239.4 µg m−3 15.6 57.1 ppbv, respectively, with values 111.5 ± 45.1 36.1 21.0 throughout period. Two severe pollution events (designated as case 2) identified accordance National Ambient Air Quality Standards (NAAQS) (China's 2012). Case (5 10 = 142.5 m−3) 2 (1 8 181.5 occurred during infection period (when “full nucleic acid screening measures” was effect) recovery (after canceled), respectively. TVOC for are, 1.3 1.8 times higher than those 1. precise influence disparate meteorological circumstances on two incidents is not addressed this study. results positive matrix factor modeling demonstrated that primary source observation industrial emissions, which constituted 32 % VOCs, followed by vehicle emissions (27 %) combustion (21 %). In 1, accounting VOCs. contrast, 2, contribution vehicular emission increased 33 became secondary aerosol formation potential found be 37.6 65.6 m−3, largest SOA (SOAP) accounted majority (63 %; 23.8 m−3), (18 After end epidemic resumption productive activities society, difference proportion (SOA) generated various decreased. Most SOAP came solvent use fuel evaporation sources, (20.9 26 (16.8 On days minimal pollution, remain main contributors formation. Therefore, regulation industry, solvent-using industries, motor vehicles needs prioritized control problem.

Язык: Английский

Interaction of benzene, toluene, ethylbenzene, and xylene with human’s body: Insights into characteristics, sources and health risks DOI Creative Commons
Meysam Saeedi, Bahram Malekmohammadi,

Shahram Tajalli

и другие.

Journal of Hazardous Materials Advances, Год журнала: 2024, Номер 16, С. 100459 - 100459

Опубликована: Сен. 23, 2024

Язык: Английский

Процитировано

26

Potential Changes in Air Pollution Associated with Challenges over South Asia during COVID-19: A Brief Review DOI
Bhupendra Pratap Singh,

Arathi Nair,

Sweety Kumari

и другие.

Asia-Pacific Journal of Atmospheric Sciences, Год журнала: 2023, Номер 60(2), С. 211 - 230

Опубликована: Дек. 18, 2023

Язык: Английский

Процитировано

11

Unveiling BTX dynamics, source identification, and health implications during COVID-19 lockdown DOI Creative Commons
Bhupendra Pratap Singh,

Jyotsana Gupta,

Priti Jain

и другие.

Deleted Journal, Год журнала: 2024, Номер 21(1)

Опубликована: Сен. 9, 2024

Язык: Английский

Процитировано

3

Predictive modeling of air quality in Patiala, Khanna, and Mandi Gobindgarh using hybrid machine learning approach DOI
Parminder Singh, Akriti Sharma, Himanshu Sharma

и другие.

AIP conference proceedings, Год журнала: 2025, Номер 3308, С. 020014 - 020014

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0

Analyzing the Interplay of Air Pollution and COVID-19: A Review on Health Implications DOI
Bhupendra Pratap Singh

EcoHealth, Год журнала: 2025, Номер unknown

Опубликована: Май 29, 2025

Язык: Английский

Процитировано

0

Insights into India's temporary air pollution relief: A systematic review for green recovery amid and post-COVID-19 DOI
Bhupendra Pratap Singh

MRS Energy & Sustainability, Год журнала: 2024, Номер 11(2), С. 343 - 368

Опубликована: Июль 22, 2024

Язык: Английский

Процитировано

2

Long-term analysis of BTEX concentrations and health risks in semi-arid urban regions DOI Creative Commons

Mukul Tiwari,

Bhupendra Pratap Singh,

Priyanka Khichi

и другие.

Deleted Journal, Год журнала: 2024, Номер 21(1)

Опубликована: Окт. 23, 2024

Язык: Английский

Процитировано

1

Changes in total volatile organic compound concentration in Seoul subway stations before (2019) and after (2021) the COVID-19 outbreak DOI Creative Commons
Sung Ho Hwang, Jong‐Uk Won, Wha Me Park

и другие.

Scientific Reports, Год журнала: 2023, Номер 13(1)

Опубликована: Ноя. 21, 2023

Volatile organic compounds (VOCs) are major air pollutants often designated as specific hazardous or toxic. This study analyzed the trends in concentration changes and influencing factors of VOCs underground subway stations Seoul Metro before (2019) after (2021) COVID-19 pandemic. A total 506 samples were collected from 253 on lines 1-8 between May 2019 September 2021. Total VOC concentrations increased pandemic 3.8 times over. The deeper station platform, greater difference 2021, which was positively related. Average highest (52.8 µg/m3) at a depth 25-30 m lowest (23.9 < 10 2019. In conclusion, excessive disinfection during resulted Metro, especially stations. Less frequent quarantine is recommended to improve quality.

Язык: Английский

Процитировано

3

Physicochemical and Particulate Matter (PM2.5, PM10) Analysis of Air from Residential Areas: In-vitro Cytotoxicity Analysis of Particulates Against Red Blood Cells (RBCs) DOI Open Access

Fatima Irshad,

Khawar Sultan, Qamar uz Zaman

и другие.

Polish Journal of Environmental Studies, Год журнала: 2024, Номер unknown

Опубликована: Сен. 2, 2024

Urban area air pollution has become a source of serious health impacts on city dwellers.The main purpose this research is to investigate the major ambient pollutants (PM 2.5 , PM 10 TVOC, and HCHO).Data was collected (n = 50) using portable quality instrument during spring season spatial distribution analysis carried out GIS software identify hotspots.A significant number locations were found be higher in measured pollutant levels as compared WHO PEQS guidelines limits .The highest values along roads.The TVOC HCHO at around drain carrying effluent.The exposure risk field sampling sites versus HCHO.The vitro cytotoxicity assay performed against red blood cells (RBCs), findings revealing toxicity RBCs.This work document because concerned authority takes action mitigate by controlling transportation covering side plantation.

Язык: Английский

Процитировано

0

The variations in volatile organic compounds based on the policy change for Omicron in the traffic hub of Zhengzhou DOI Creative Commons
Bowen Zhang, Dong Zhang, Zhe Dong

и другие.

Atmospheric chemistry and physics, Год журнала: 2024, Номер 24(23), С. 13587 - 13601

Опубликована: Дек. 10, 2024

Abstract. Online volatile organic compounds (VOCs) were monitored before and after the Omicron policy change at an urban site in polluted Zhengzhou from 1 December 2022 to 31 January 2023. The characteristics sources of VOCs investigated. daily mean concentrations PM2.5 total (TVOCs) ranged 53.5 239.4 µg m−3 15.6 57.1 ppbv, respectively, with values 111.5 ± 45.1 36.1 21.0 throughout period. Two severe pollution events (designated as case 2) identified accordance National Ambient Air Quality Standards (NAAQS) (China's 2012). Case (5 10 = 142.5 m−3) 2 (1 8 181.5 occurred during infection period (when “full nucleic acid screening measures” was effect) recovery (after canceled), respectively. TVOC for are, 1.3 1.8 times higher than those 1. precise influence disparate meteorological circumstances on two incidents is not addressed this study. results positive matrix factor modeling demonstrated that primary source observation industrial emissions, which constituted 32 % VOCs, followed by vehicle emissions (27 %) combustion (21 %). In 1, accounting VOCs. contrast, 2, contribution vehicular emission increased 33 became secondary aerosol formation potential found be 37.6 65.6 m−3, largest SOA (SOAP) accounted majority (63 %; 23.8 m−3), (18 After end epidemic resumption productive activities society, difference proportion (SOA) generated various decreased. Most SOAP came solvent use fuel evaporation sources, (20.9 26 (16.8 On days minimal pollution, remain main contributors formation. Therefore, regulation industry, solvent-using industries, motor vehicles needs prioritized control problem.

Язык: Английский

Процитировано

0