scholarly journals O3 Sensitivity and Contributions of Different NMHC Sources in O3 Formation at Urban and Suburban Sites in Shanghai

Atmosphere ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 295
Author(s):  
Haotian Lin ◽  
Ming Wang ◽  
Yusen Duan ◽  
Qingyan Fu ◽  
Wenhao Ji ◽  
...  
Keyword(s):  
Pollution Control ◽  
Anthropogenic Sources ◽  
Urban Site ◽  
Air Pollution Control ◽  
Vehicular Emission ◽  
Air Mass ◽  
Solvent Use ◽  
The Yrd ◽  
Different Sources ◽  
Suburban Site

Ground-level ozone (O3) pollution is still one of the priorities and challenges for air pollution control in the Yangtze River Delta (YRD) region of China. Understanding the relationship of O3 with its precursors and contributions of different sources in O3 formation is essential for the development of an O3 control strategy. This study analyzed O3 sensitivity to its precursors using a box model based on online observations of O3, non-methane hydrocarbons (NMHCs), nitrogen oxides (NOx), and carbon monoxide (CO) at an urban site and a suburban site in Shanghai in July 2017. Anthropogenic sources of NMHCs were identified using the positive matrix factorization (PMF) receptor model, and then contributions of different sources in O3 formation were estimated by the observation-based model (OBM). The relative incremental reactivity (RIR) values calculated by the OBM suggest that O3 formation at the urban site was in the NMHC-limited regime, while O3 formation at the suburban site tended between the transition regime and the NMHC-limited regime. Vehicular emission and liquefied petrochemical gas (LPG) use or aged air mass were found to be the two largest contributors at the urban and suburban sites in July, followed by paint and solvent use, and the petrochemical industry. However, from the perspective of O3 formation, vehicular emission and paint and solvent use were the largest two contributors at two sites due to the higher RIR values for paint and solvent use. In addition, the influence of transport on O3 sensitivity was identified by comparing O3 sensitivity at the suburban site across two days with different air mass paths. The result revealed that O3 formation in Shanghai is not only related to local emissions but also influenced by emissions from neighboring provinces. These findings on O3–NMHC–NOX sensitivity, contributions of different sources in O3 formation, and influence of transport could be useful for O3 pollution control in the YRD region. Nevertheless, more quantitative analyses on transport and further evaluation of the uncertainty of the OBM are still needed in future.

scholarly journals Trace Element Characterization in Household Dusts in Industrial Areas Along Highways in Bangladesh and their Health Implications

2019 ◽  
Vol 43 (1) ◽  
pp. 47-58 ◽  
Author(s):  
Md Badiuzzaman Khan ◽  
Md Reazul Islam ◽  
Bilkis Ara Begum ◽  
Md Abdullah Miah
Keyword(s):  
Trace Elements ◽  
Anthropogenic Sources ◽  
Health Impacts ◽  
Vehicular Emission ◽  
Industrial Areas ◽  
X Ray ◽  
Sampling Campaign ◽  
Carcinogenic Effects ◽  
Academy Of Sciences ◽  
Different Sources

A study was carried out in the industrial areas in order to determine the composition of trace elements in dusts deposited at homes, identifying different sources of elements and also for their possible health impacts. A total of 14 deposited dust samples were collected from households near industrial areas of Tangail and Gazipur districts during sampling campaign. Samples were analyzed using X-ray Fluorescence and the highest concentration was observed for Fe whereas the overall rank of the concentrations is Fe>Ca>K>Ti>Zn>Pb>Zr>Sr>Rb>Cu>Y>As>Cr>Ni. The Correlation analysis, enrichment factor and factor analysis indicated that anthropogenic sources especially industrial activity, vehicular emission and household cooking are the main sources of trace elements in the study areas. The non-carcinogenic and carcinogenic health risks indicated that children are more vulnerable for non-carcinogenic effects whereas the values of cancer risk for both the child and adult are below the acceptable limit of European Union. Journal of Bangladesh Academy of Sciences, Vol. 43, No. 1, 47-58, 2019

scholarly journals Levels and Sources of Atmospheric Particle-Bound Mercury in Atmospheric Particulate Matter (PM10) at Several Sites of an Atlantic Coastal European Region

Atmosphere ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 33 ◽  
Author(s):  
Jorge Moreda-Piñeiro ◽  
Adrián Rodríguez-Cabo ◽  
María Fernández-Amado ◽  
María Piñeiro-Iglesias ◽  
Soledad Muniategui-Lorenzo ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Major Ions ◽  
Univariate Analysis ◽  
Anthropogenic Sources ◽  
European Region ◽  
Urban Site ◽  
Industrial Site ◽  
Atmospheric Particle ◽  
Atlantic Coastal ◽  
Suburban Site

Atmospheric particle-bound mercury (PHg) quantification, at a pg m−3 level, has been assessed in particulate matter samples (PM10) at several sites (industrial, urban and sub-urban sites) of Atlantic coastal European region during 13 months by using a direct thermo-desorption method. Analytical method validation was assessed using 1648a and ERM CZ120 reference materials. The limits of detection and quantification were 0.25 pg m−3 and 0.43 pg m−3, respectively. Repeatability of the method was generally below 12.6%. PHg concentrations varied between 1.5–30.8, 1.5–75.3 and 2.27–33.7 pg m−3 at urban, sub-urban and industrial sites, respectively. PHg concentration varied from 7.2 pg m−3 (urban site) to 16.3 pg m−3 (suburban site) during winter season, while PHg concentrations varied from 9.9 pg m−3 (urban site) to 19.3 pg m−3 (suburban site) during the summer. Other trace elements, major ions, black carbon (BC) and UV-absorbing particulate matter (UV PM) was also assessed at several sites. Average concentrations for trace metals (Al, As, Bi, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Sb, Si, Sr, V and Zn) ranged from 0.08 ng m−3 (Bi) at suburban site to 1.11 µg m−3 (Fe) at industrial site. Average concentrations for major ions (including Na+, K+, Ca2+, NH4+, Mg2+, Cl−, NO3− and SO42−) ranged from 200 ng m−3 (K+) to 5332 ng m−3 (SO42−) at urban site, 166 ng m−3 (Mg2+) to 4425 ng m−3 (SO42−) at suburban site and 592 ng m−3 (K+) to 5853 ng m−3 (Cl−) at industrial site. Results of univariate analysis and principal component analysis (PCA) suggested crustal, marine and anthropogenic sources of PHg in PM10 at several sites studied. Toxicity prediction of PHg, by using hazard quotient, suggested no non-carcinogenic risk for adults.

The Zhenhua Case: the emergence of civil environmental public interest litigation in China

2021 ◽  
Vol 14 (2) ◽  
pp. 116-128
Author(s):  
Wenjun Yan
Keyword(s):  
Air Pollution ◽  
Environmental Protection ◽  
Public Interest ◽  
Pollution Control ◽  
Environmental Damage ◽  
Air Pollution Control ◽  
Public Interest Litigation ◽  
First Time ◽  
Restoration Cost

Abstract In 2015, the All-China Environment Federation v Dezhou Jinghua Group Zhenhua Corporation Limited case was the first civil environmental public interest litigation (CEPIL) against air pollution in China. Constituting a milestone in the field of air pollution control in China, this case (i) confirms the eligibility of a non-governmental organisation (NGO) to file civil public interest litigations; (ii) discusses remedies for the ecological destruction caused by air pollution; (iii) assesses the ecological and environmental damage using the ‘virtual restoration cost’ method; and (iv) uses public apology as an innovative way for Zhenhua to assume liability. By applying and interpreting several important rules under the Environmental Protection Law of China (EPLC) for the first time, this case sets an example for future CEPILs against air pollution in China.

How to realize the effect of air pollution control? A hybrid decision framework under the fuzzy environment

2021 ◽  
Vol 305 ◽  
pp. 127093
Author(s):  
Yao Tao ◽  
Yunna Wu ◽  
Jianli Zhou ◽  
Man Wu ◽  
Shiman Wang ◽  
...  
Keyword(s):  
Air Pollution ◽  
Pollution Control ◽  
Air Pollution Control ◽  
Decision Framework ◽  
Fuzzy Environment
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