Article
Engineering, Environmental
Yao Gu, Baoshuang Liu, He Meng, Shaojie Song, Qili Dai, Laiyuan Shi, Yinchang Feng, Philip K. Hopke
Summary: Conventional source apportionment of ambient volatile organic compounds (VOCs) has not been effectively supporting secondary pollution control development due to its lack of consideration for ozone (O3) and secondary organic aerosol (SOA) formation. This study developed a consumed VOC source apportionment approach and found that biogenic emissions, vehicle emissions, and gasoline evaporation were the main sources of consumed VOCs in Laoshan, Qingdao. Biogenic emissions contributed the most during the non-O3 pollution period, while during the O3 pollution period, biogenic emissions, vehicle emissions, and gasoline evaporation provided the largest contributions.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Raj Singh, Baerbel Sinha, Haseeb Hakkim, Vinayak Sinha
Summary: Paddy-residue burning during October-November in north-west India contributes to poor air quality due to the emission of volatile organic compounds (VOCs). This study provides a quantitative analysis of the different sources of VOCs and pollutants in the region. The results show that solid fuel usage, traffic, and biomass burning are the primary sources of pollution.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Lichun Xuan, Yuenan Ma, Yanfeng Xing, Qingqing Meng, Jie Song, Taihan Chen, Hao Wang, Pengjie Wang, Yufan Zhang, Peng Gao
Summary: This study investigated the levels, emission sources, and associated health risks of ambient volatile organic compounds (VOCs) near urban traffic trunk from June 2017 to November 2018. The seasonal and daily fluctuations in VOC concentrations were observed, with aromatics identified as the most important type for the formation of secondary organic aerosols, and traffic emissions being the primary source of TVOCs. Carcinogenic and non-carcinogenic risks to residents in autumn were highlighted as a major concern.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Lilai Song, Qili Dai, Yinchang Feng, Philip K. Hopke
Summary: The study utilized a moving window evolving PMF method to identify sources during the Spring and Lantern Festivals in a field campaign in Tianjin, China, and improved the apportionment compared to conventional factor analysis. The composition of sources changed during the COVID-19 pandemic period, and uncertainties in source contribution estimates were evaluated through multiple PMF runs. Wind-dependent sources like dust and distant point sources had larger uncertainties, indicating the method's ability to reflect actual emissions and estimate uncertainties when appropriate data are available.
ENVIRONMENTAL POLLUTION
(2021)
Article
Construction & Building Technology
Shan Huang, Peixian Chen, Kuanyun Hu, Yecheng Qiu, Weiwei Feng, Zhipeng Ren, Xianglian Wang, Ting Huang, Daishe Wu
Summary: The study in central China's Nanchang subway found that PM2.5 levels varied greatly across different stations, subway platforms, and seasons, with the highest contamination occurring during the October holidays. The main sources of PM2.5 pollution were identified as the wheel/rail system, vehicle traffic, and coal combustion.
BUILDING AND ENVIRONMENT
(2021)
Article
Environmental Sciences
Qianqian Xue, Yingze Tian, Yang Wei, Danlin Song, Fengxia Huang, Shanshan Tian, Yinchang Feng
Summary: This study analyzed PM2.5 samples collected over a 1-year period in a Chinese megacity, examining the relationship between organic and inorganic components and the applicability of organic markers in source apportionment. By incorporating different combinations of tracers, the contributions of various pollution sources to PM2.5 were identified.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Hui Xie, Wenxiu Gao, Wentao Zhao, Yajiao Han, Yongping Gao, Bai Liu, Yuan Han
Summary: Volatile organic compounds (VOCs), generated during petroleum refining and chemical production, especially aromatic hydrocarbons, pose a risk to human health. Unorganized emissions of VOCs from typical aromatics units remain poorly studied. This study investigated VOCs emissions from aromatics extraction and ethylbenzene devices and found 112 VOCs emitted, with alkanes, aromatic hydrocarbons, and olefins being primary types. Differences were observed between the two sets of aromatics extraction units in detection concentrations of aromatic hydrocarbons, olefins, and types of detected chlorinated organic compounds. The study provides guidance for VOCs emission inventories and improving management in petrochemical enterprises.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Shuang-Hua Yang, Jian-Meng Chen
Summary: This special issue aims to provide innovative research work in air pollution prevention and pollution source identification in chemical industrial parks. Chemical industrial parks have caused significant pressure on the surrounding and regional environment, leading to the need for addressing the challenges of air pollution prevention and pollution source identification.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Environmental Sciences
Xiaoting Ji, Ke Xu, Dan Liao, Gaojie Chen, Taotao Liu, Youwei Hong, Sijun Dong, Sung-Deuk Choi, Jinsheng Chen
Summary: Seasonal variations and sources of ambient volatile organic compounds (VOCs) were investigated in a mountain area of southeastern China. The study found that oxygenated VOCs and alkanes were the dominant categories of VOCs, with alkenes showing the highest chemical activity and aromatics contributing the most to secondary organic aerosols (SOA) formation. Industrial emissions and combustion burning were the major sources of VOCs, followed by vehicle exhausts and biogenic sources. The study provides important insights into pollution characteristics and offers a scientific basis for O3 and PM2.5 pollution control in the mountainous area.
AEROSOL AND AIR QUALITY RESEARCH
(2022)
Article
Environmental Sciences
Yan Tan, Shuwen Han, Yi Chen, Zhuozhi Zhang, Haiwei Li, Wenqi Li, Qi Yuan, Xinwei Li, Tao Wang, Shun-cheng Lee
Summary: A field measurement study focusing on VOCs was conducted in a rural coastal site in Hong Kong, showing diurnal variations in VOC concentrations, with methanol being the most abundant species. Source apportionment using PMF identified major VOC sources as industry and vehicle-related emissions, biogenic emissions, biomass burning, secondary formation, and ship-related emissions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Ehsan Soleimanian, Yuxuan Wang, Mark Estes
Summary: This study investigated the long-term variations in ambient levels of surface ozone, volatile organic compounds (VOCs), and nitrogen oxides (NOx) within the Houston-Galveston-Brazoria (HGB) region. The results showed an overall reduction in ozone levels, mainly due to regional background ozone and a decrease in local anthropogenic emissions. The contribution of the solvent/painting/rubber industries to ozone pollution was found to be increasing.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Baoshuang Liu, Yang Yang, Tao Yang, Qili Dai, Yufen Zhang, Yinchang Feng, Philip K. Hopke
Summary: Photochemical losses of ambient volatile organic compounds (VOCs) significantly affect source apportionment analysis. A study conducted in Tianjin, China from April to August 2020 found that photochemical losses reduced the concentrations of highly reactive species and led to underestimation of contributions from biogenic emissions, polymer production-related industrial sources, diesel and gasoline evaporation, as well as liquefied petroleum gas, vehicle emissions, natural gas, and oil refinery sources. Temperature and ozone concentrations were found to influence the extent of photochemical losses.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Environmental Sciences
Yuanyuan Niu, Fang Wang, Songmin Liu, Wenjie Zhang
Summary: Indoor and outdoor air particulate samples were collected in a canteen at NJUST, with findings showing over half of PM2.5 penetrating from outdoors. Analysis revealed elevated levels of As, Mn, and Cd in the canteen, originating from sources like cooking, fuel combustion, and transportation. Enrichment factor analysis linked excessive As in the canteen to outdoor air infiltration and cooking practices.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Sea-Ho Oh, Myoungki Song, James J. Schauer, Zang-Ho Shon, Min-Suk Bae
Summary: This study conducted filter-based samplings to determine the quantitative contributions of PM2.5 along the South-west shoreline of Korea. The results showed that secondary aerosol formation dominates, with a significant contribution from a marine-oriented biogenic source. The PMF model identified six source categories, with long-range transport, mixed sources, and domestic sources playing important roles in PM2.5 concentrations.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Nattaporn Pinthong, Sarawut Thepanondh, Akira Kondo
Summary: The study analyzed the impact on health and potential emission sources of ambient VOCs in the vicinity of a petrochemical industrial area. Carcinogenic and non-carcinogenic inhalation risks were evaluated, and specific sources of VOCs were identified. The results showed that vehicle exhaust and industrial processes were the main sources of VOCs, and aromatic hydrocarbons were the dominant components.
AEROSOL AND AIR QUALITY RESEARCH
(2022)
Article
Environmental Sciences
Cheng-Liang Zhang, Jing-Jing Feng, Ting-Ning Zhao, Li-Ming Rong
LAND DEGRADATION & DEVELOPMENT
(2017)
Article
Environmental Sciences
Jing-jing Feng, Cheng-liang Zhang, Ting-ning Zhao, Li-ming Rong
ENVIRONMENTAL EARTH SCIENCES
(2017)
Article
Environmental Sciences
Jingjing Feng, Xiaolin Chen, Lei Jia, Qizhen Liu, Xiaojia Chen, Deming Han, Jinping Cheng
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2018)
Article
Water Resources
J. -J. Feng, L. Jia, Q. -Z. Liu, X. -L. Chen, J. P. Cheng
URBAN WATER JOURNAL
(2018)
Article
Environmental Sciences
Ziyu Wang, Jingjing Feng, Qingyan Fu, Song Gao, Xiaojia Chen, Jinping Cheng
AIR QUALITY ATMOSPHERE AND HEALTH
(2019)
Article
Environmental Sciences
Jing-Jing Feng, Xiang-Fei Sun, Eddy Y. Zeng
Summary: This study determined the KOA values of 21 target liquid crystals using a GC-RT approach, and constructed a QSPR model to predict the environmental fate of 116 LCs with similar compositions and structures. The results suggest that LCs may act as potential environmental pollutants with characteristics comparable to traditional organic pollutants.
Article
Engineering, Environmental
Jing-Jing Feng, Xiang-Fei Sun, Eddy Y. Zeng
Summary: Liquid crystal monomers (LCMs) accumulate in indoor environments, and damaged liquid crystal displays may be a critical mechanism for LCMs to enter the environment. This study conducted experiments to characterize the emissions of LCMs from obsolete smartphone screens and estimate the doses of residential and occupational exposures. It was found that LCMs with large molecular weights and low volatilities tend to accumulate at screen surfaces and are re-emitted at elevated temperatures, resulting in high emission rates. Based on in silico assessments, LCMs emitted from obsolete smartphones in indoor settings may pose potential carcinogenic risks to human health.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Geochemistry & Geophysics
Cheng-liang Zhang, Jing-jing Feng, Li-ming Rong, Ting-ning Zhao
Article
Geochemistry & Geophysics
J. Feng, C. Zhang, T. Zhao, Q. Zhang