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1.
J Environ Manage ; 266: 110545, 2020 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-32392136

RESUMEN

To determine the contribution of different particulate sources in PM10 mass concentration at semi urban site, source apportionment study was carried out from 7 May 2015 to 9 June 2016. PM10 samples were analyzed for 18 species (NO3-, SO42-, Cl-,Na+, K+, Al, Ti, Mn, Fe, Mg, V, Ni, Cu, Zn, Ba, Pb, Cr, Ca). The study was specifically designed to apportion the sources of air pollution where main exposure is from crop residue burning. The particulate matter (PM10) samples were analyzed for mass and chemical composition, with Potassium as biomarker for crop residue burning. Sulfate SO42-) and potassium ion (K+) species dominated the concentration of characterized species. K+ and Cl- were identified as reliable markers for crop residue burning while Zn, Pb, Al, Ni and Cu were identified as markers for vehicular exhaust. The results of Positive matrix factorization (PMF) model gives the five major sources as probable sources of PM10 pollution. The highest contribution in PM10 mass concentration was found to be sulfate (24.39 ± 10.42), and potassium (24.02 ± 09.56) and chloride (07.07 ± 05.47), which combined accounts for nearly 60% of the total PM10 mass fraction. The highest source contribution was from Industrial emission source (22.9%), with almost same contribution from biomass burning (21.2%), and resuspended dust (20.7%) and followed by vehicular emissions (19.0%) and least from secondary aerosols (16.2%).


Asunto(s)
Contaminantes Atmosféricos , Aerosoles , Biomasa , Polvo , Monitoreo del Ambiente , Tamaño de la Partícula , Material Particulado , Emisiones de Vehículos
3.
J Environ Manage ; 264: 110462, 2020 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-32250895

RESUMEN

Plants are continuously exposed to human air pollution, absorbing pollutants in their tissues. Trees can store pollutants in wood, in the annual growth rings, retaining traces of pollutants in the environment. Information on past pollution events are archived by trees, which dendrochemistry, a dendrochronological science combined with chemistry, is able to access. Many authors have suggested that trees could complement the conventional environmental monitoring: a forest archive of pollution events. However, the implications of trees occurrence in polluted areas on planning and management have not yet been discussed. In this article, we investigate whether forest archives exist and whether they should be integrated into the network of existing monitoring stations. We use a case study, the Veneto region of Italy, one of the most polluted areas in Europe, to examine the occurrence of trees around 28 industrial plants retrieved from a European pollution register. We propose planning actions to develop the latent potential of these forest archives for environmental monitoring, which society may benefit. We follow three steps: (a) assessing the cover and composition of tree canopies around the industrial plants, (b) inventorying the existing artificial air monitoring stations in order to discover whether pollutants around the industrial plants are already monitored, (c) assessing land use patterns in order to identify which are the receptors of air pollution and enhance the forest archive in the future. These spatial analyses are conducted in a 1-km radius buffer with the industrial plant as the centre. Results show that forest archives are available, with cover and composition suitable for dendrochemistry studies. Artificial monitoring stations are too far from industrial plants or have been installed recently, unable to provide historical data. Trees are an alternative source of pollution data. Receptors of air pollution include a diversity of urban, rural and agricultural lands, where forest archives can be managed and conserved through a variety of actions. Environmental protection agencies should value these trees, preserving them and accessing the records held in this forest archive. Similar inventories must be promoted in other industrialised regions of the world even at larger scales. Studies like this one should also be incorporated into landscape or urban planning processes.


Asunto(s)
Contaminantes Atmosféricos , Contaminación del Aire , Monitoreo del Ambiente , Europa (Continente) , Bosques , Humanos , Italia , Árboles
5.
Waste Manag ; 106: 193-202, 2020 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-32234654

RESUMEN

Volatile organic compounds (VOCs) are the main precursors of tropospheric ozone and secondary aerosol generation, posing a threat to human health and affecting the environmental climate. A large quantity of VOCs can be produced in the initial decomposition stage of municipal solid waste (MSW). In this study, the atmosphere in an MSW transfer station was monitored for one year. The emission characteristics of VOCs in different seasons and working hours were analyzed, and the ozone-formation potential of VOCs was calculated through the maximum incremental reaction method, and health risks posed by the VOCs in the MSW transfer station were assessed. The results showed that the highest concentration of VOCs appeared in spring and summer, accounting for 70.6% and 26.6% of total VOCs (TVOCs) in peak working periods, respectively. Oxygenated compounds and terpenes contributed most to ozone formation, accounting for 41.0% and 50.6% of total ozone formation, respectively. The carcinogenic risks were above the safe threshold, labeled "probable risks". Tetrachloroethylene and 1,2-dichloroethane were the main contributors to carcinogenic risks. The mean non-carcinogenic risks were within the safe threshold in the MSW transfer station. From the perspective of protecting human health and ecological environmental safety, VOC control needs to be further strengthened in the transfer station.


Asunto(s)
Contaminantes Atmosféricos , Ozono , Compuestos Orgánicos Volátiles , China , Monitoreo del Ambiente , Humanos , Medición de Riesgo , Residuos Sólidos
7.
Yonsei Med J ; 61(4): 310-316, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-32233173

RESUMEN

PURPOSE: To evaluate the effects of air purifiers on the concentrations of indoor air pollutants and on asthma control in children. MATERIALS AND METHODS: In this randomized crossover trial, daily use of an air purifier filter was compared with a matched placebo with the filter off. Thirty elementary school students who had asthma were enrolled and randomly allocated to one of two groups. The primary endpoints were changes in indoor air quality, asthma severity, lung function, airway inflammatory, urine microbiome, and phthalate after the installation of air purifiers. PM2.5 and CO2 were measured as indoor air pollutants. Asthma severity was assessed in terms of both symptom and medication scores acquired using a daily questionnaire. The higher the score, the better the symptom or the less frequent the use of medication. Peak expiratory flow rate and fractional exhaled nitric oxide were also measured. RESULTS: The mean age of the enrolled patients was 9.2±1.98 years. The mean concentration of PM2.5 was 17.0 µg/m³ in the filter-off condition, but significantly lower at 9.26 µg/m³ in the filter-on condition. Medication scores were 6.9 for the filter-off and 7.12 for the filter-on conditions, reflecting a statistically significant decrease in the frequency of medications used during air purifier operation. Bacterial richness, as determined using the Chao 1 index, was markedly lower in the filter-on than the filter-off condition. CONCLUSION: This study suggests that air purifiers benefit medication burden in children with asthma by reducing PM2.5 levels.


Asunto(s)
Filtros de Aire/estadística & datos numéricos , Contaminantes Atmosféricos/análisis , Contaminación del Aire Interior/prevención & control , Asma/epidemiología , Pulmón/fisiología , Material Particulado/efectos adversos , Adolescente , Contaminación del Aire Interior/efectos adversos , Niño , Estudios Cruzados , Monitoreo del Ambiente , Femenino , Humanos , Masculino , Óxido Nítrico , Evaluación de Resultado en la Atención de Salud , Material Particulado/análisis , Pruebas de Función Respiratoria , Índice de Severidad de la Enfermedad
8.
J Environ Manage ; 262: 110263, 2020 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-32250779

RESUMEN

This study investigates spatial-temporal variability and trends of ambient PM2.5 in Beijing, China, using data collected from eight urban and four suburban stations. During 2013-2018, the city-wide annual PM2.5 concentrations decreased significantly by 40% (84 µg/m3 in 2013 vs. 50 µg/m3 in 2018). The decreasing PM2.5 trend is more pronounced in winter and during the heating season (November-March), in urban areas, and at the median and upper percentiles of PM2.5 concentrations. The 95th percentile PM2.5 concentrations had decreased by 20 µg/m3/yr in the heating season and 16 µg/m3/yr in the non-heating season. During the six-year study period, there was a significant increase in excellent air quality days (PM2.5 concentration < 35 µg/m3) and a significant decrease in heavy pollution days (PM2.5 concentration > 150 µg/m3). PM2.5 concentrations were strongly correlated across the 12 stations. Urban areas in south Beijing experienced higher PM2.5 levels than suburban sites at every hour-of-day, day-of-week, and month-of-year. PM2.5 levels were higher during winter and the heating season, when PM2.5 emission was high due to space heating and mixing layer heights were low. PM2.5 was higher at weekends than during weekdays, when 20% of private passenger vehicles are prohibited, and higher at night than during the day, when heavy duty delivery vehicles are not permitted. These temporal and spatial trends suggest that Beijing's PM2.5 is strongly impacted by local emissions. Our results indicate, control strategies implemented were successful in Beijing's air quality improvement, but further reduction of PM2.5 concentrations in Beijing could be challenging due to significant contribution from its neighboring cities, calling for comprehensive and collaborative efforts in regional/national scale.


Asunto(s)
Contaminantes Atmosféricos , Contaminación del Aire , Beijing , China , Ciudades , Monitoreo del Ambiente , Material Particulado , Estaciones del Año
9.
J Environ Manage ; 262: 110341, 2020 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-32250817

RESUMEN

Serious PM2.5 air pollution has persistently plagued and endangered most urban areas in China in recent years, and targeted policies are necessary to improve urban air quality ranging from macro policy (national level) to medium policy (city level) to micro policy (site specific). However, the macro-pattern study of air pollution between Chinese cities is inadequate, and not conducive to the formulation of macro-policy. To bridge this gap, we applied a sequential pattern mining algorithm to analyze the spatial-temporal patterns of PM2.5 pollution across Chinese cities during the period 2015 to 2018. The sequential patterns were collected from three levels of granularity on geographic areas and ten temporal scenarios covering time intervals from 10 to 100 h. Many underlying associative relationships were revealed between different cities by the mined patterns. The patterns were heterogeneous and presented five characteristics (i.e., clustering, symmetry, imbalance, decay, and stability). Each of the urban areas under investigation at different granularities was analyzed to identify the occurrence of associative relationships between it and other urban areas; moreover, we determined the degree of severity of such relationships. Our research results provide solid data that can be used as a reference by the various levels of Chinese governments for decision-making; overall, they can be used to improve the design of joint policies to prevent and control PM2.5 pollution in Chinese urban areas.


Asunto(s)
Contaminantes Atmosféricos , Contaminación del Aire , China , Ciudades , Monitoreo del Ambiente , Material Particulado
10.
J Environ Manage ; 262: 110374, 2020 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-32250828

RESUMEN

Benzene concentrations covering the three year period 2015-2017, were derived from four background monitoring stations located in Berlin (Germany), Budapest (Hungary), Mons (Belgium) and Torino (Italy), in order to calculate the corresponding Incremental Lifetime Cancer Risk (ILCR) of an average adult, associated with the inhalation of benzene. In addition, a cluster analysis of backward air mass trajectories was coupled with Potential Source Contribution Function (PSCF) model aiming to identify possible exogenous source regions of benzene affecting the four cities and also to allocate the ILCR in atmospheric circulation patterns. A potential health risk (ILCR>10-6) from benzene exposure was estimated in all four cities. In Berlin and Mons, an enhanced fraction of the ILCR was associated with Southeast short range trajectories of slow moving air masses, which were also related to extreme long range transport episodes. Furthermore, increased benzene concentrations in Budapest were observed during the prevalence of short range Southwest airflows, whilst PSCF model isolated the transboundary emission sources in the industrialized North Italy. Long range trajectories of fast moving marine air masses from North Atlantic, not influenced by anthropogenic emissions, improved the benzene related air quality in Berlin and Mons due to dispersion. No long range transport effects were confirmed in Torino.


Asunto(s)
Contaminantes Atmosféricos , Contaminación del Aire , Neoplasias , Adulto , Bélgica , Benceno , Ciudades , Monitoreo del Ambiente , Europa (Continente) , Alemania , Humanos , Hungría , Italia , Material Particulado
11.
J Environ Manage ; 265: 110532, 2020 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-32292171

RESUMEN

The hypothesis of "Pollution Heaven" or "Pollution Halo" has, for some time, been one of the central issues in environmental economics. There is a controversy in the conclusions with regards to China, it thus needs further empirical testing. Based on 2003 to 2016 statistical data on 285 Chinese cities, this paper uses a dynamic spatial panel model to empirically analyze the impact of foreign direct investment (FDI) on PM2.5 pollution. The results demonstrate that urban PM2.5 pollution shows both significant global spatial autocorrelation and local spatial agglomeration effects. Overall, FDI significantly aggravates China's urban PM2.5 pollution, thus confirming the "Pollution Heaven" hypothesis. This effect, however, depends on the stage of urban economic development. Although FDI has no significant effect on urban PM2.5 pollution in the initial stage of industrialization, it does aggravate urban PM2.5 pollution in the midterm stage. In the later period of industrialization, FDI actually improves urban PM2.5 pollution, but the effect of this improvement is relatively weak. Furthermore, PM2.5 pollution shows significant spatial spillover and dynamic effects. It follows that both joint prevention and control and continuous efforts must be made to control PM2.5 pollution.


Asunto(s)
Contaminantes Atmosféricos , Contaminación del Aire , China , Ciudades , Contaminación Ambiental , Inversiones en Salud , Material Particulado
12.
J Environ Manage ; 261: 110207, 2020 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-32148277

RESUMEN

Over the past few decades, the pollutant emissions trading policies in China have undergone significant innovation and exploration. It is considered as a market-based approach that became integrated with command-and-control mechanisms such as total emissions control or pollution permits. This study is the first to provide systematic, reflective thinking that tracks the regional initiatives of pollutant emissions trading systems in China. In this article, we divided China's emissions trading practices into three stages and conducted a comparative qualitative analysis of the country's eleven provincial emissions trading pilots. We found that provincial pilots are highly diverse and complex regarding the pollutants that can be traded, the industrial sectors involved, the design of trading administration and processes, and the implementation of trading practices such as allowance, pricing and platforms. We also identified four main challenges: legislation setup, monitoring and verification, administrative interference, and the technical quantification of pollutant hotspots. We conclude the article by providing policy implications so that emissions trading policies can be integrated with the newly developed pollution permitting system.


Asunto(s)
Contaminantes Atmosféricos , Contaminación del Aire , Contaminantes Ambientales , China , Industrias
13.
J Environ Manage ; 261: 110237, 2020 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-32148307

RESUMEN

Biosystems used for volatile organic compound (VOC) control have slow re-acclimation after extended starvation. In this study, a gel-encapsuled microorganism biofilter (GEBF) for the treatment of VOCs was used for rapid recovery after starvation interruption. Another conventional perlite biofilter (BF) was used as a control. Results showed that GEBF and BF needed 3 and 6 days for fully recovery after short-term (6 days) starvation. For long-term (20 days) starvation, GEBF fully recovered the removal performance after 9 days, whereas BF recovered only 70% within the same period. Flow cytometry analysis indicated that GEBF presented better viability state of microbial population than that in BF under starvation. The average metabolic activity of microorganisms in GEBF remained a relatively high during and after starvation (0.0049 h-1). However, the average metabolic activity of microorganisms in BF decreased from 0.0042 h-1 before starvation to 0.0033 h-1 under starvation. Changes in the microbial community structure in GEBF and BF were investigated and compared by high-throughput sequencing and principal component analysis. Notably, the microbial community structure in the two biofilters showed different behavior. All these results demonstrated that the gel encapsulation of microorganisms is a promising strategy to resist starvation in biofiltration technologies.


Asunto(s)
Contaminantes Atmosféricos , Filtración , Biodegradación Ambiental
14.
Proc Jpn Acad Ser B Phys Biol Sci ; 96(3): 122-129, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32161210

RESUMEN

Black carbon (BC) particles cause adverse health effects and contribute to the heating of the atmosphere by absorbing visible solar radiation. Efforts have been made to reduce BC emissions, especially in urban areas; however, long-term measurements of BC mass concentration (MBC) are very limited in Japan. We report MBC measurements conducted in Tokyo from 2003 to 2017, showing that MBC decreased by a factor of 3 from 2003 to 2010 and was stable from 2010 to 2017. Fine particulate concentrations (PM2.5) decreased by a much smaller factor during 2003-2010. The diurnal variations of BC size distributions suggest that the BC in Tokyo originates mainly from local sources, even after 2010. Our three-dimensional model calculations show that BC from the Asian continent contributes a small portion (about 20%) of the annual average MBC in the Kanto region of Japan, which includes Tokyo. This indicates that continued reduction of BC emissions inside Japan should be effective in further decreasing MBC.


Asunto(s)
Carbono/química , Monitoreo del Ambiente/métodos , Material Particulado/química , Contaminantes Atmosféricos/química , Contaminación del Aire , Historia del Siglo XXI , Humanos , Modelos Teóricos , Salud Pública , Tokio
15.
Chemosphere ; 249: 126258, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32213391

RESUMEN

Secondary Organic aerosols (SOA) are important components of PM 2.5. In order to control the heavy haze pollution, it is essential to find out the contributions of main SOA precursors. Nowadays, the tracer-based method has been widely used in analyzing the contributions of the precursors to SOA. However, it is not well known that whether the SOA tracers can be oxidized or how the instability of the SOA tracers would influence the accuracy of the tracer-based method for source apportionment. In this paper, the heterogeneous oxidation experiments of SOA tracers produced from isoprene and toluene as well as their mixtures under different conditions were conducted in a 2 m3 indoor chamber. The relative rate constants approach was used to determine the effective rate constants of the ozone reactions of the tracers. Concentrations of 2-Methyl Erythritol, a tracer of isoprene SOA, and 2, 3-Dihydroxy-4-oxopentanoic Acid, a tracer of toluene SOA, were analyzed using GC-MS. The effects of different seed aerosols and initial VOC0/NO on the heterogeneous oxidation of the tracers were investigated. The effects of co-existing components in the SOA produced from the mixture of isoprene and toluene on the heterogeneous oxidation of the tracers by ozone were also studied.


Asunto(s)
Aerosoles/química , Butadienos/química , Hemiterpenos/química , Ozono/química , Tolueno/química , Aerosoles/análisis , Contaminantes Atmosféricos/análisis , Oxidación-Reducción
16.
Sci Total Environ ; 719: 137349, 2020 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-32114225

RESUMEN

Gestational diabetes mellitus (GDM) is a serious complication of pregnancy that could cause adverse health effects on both mothers and fetuses, and its prevalence has been increasing worldwide. Experimental and epidemiological studies suggest that air pollution may be an important risk factor of GDM, but conclusions are inconsistent. To provide a comprehensive overview of ambient air pollution on GDM, we summarized existing evidence concerning biological linkages between maternal exposure to air pollutants and GDM based on mechanism studies. We also performed a quantitative meta-analysis based on human epidemiological studies by searching English databases (Pubmed, Web of Science and Embase) and Chinese databases (Wanfang, CNKI). As a result, the limited mechanism studies indicated that ß-cell dysfunction, neurohormonal disturbance, inflammation, oxidative stress, imbalance of gut microbiome and insulin resistance may be involved in air pollution-GDM relationship, but few studies were performed to explore the direct biological linkage. Additionally, a total of 13 epidemiological studies were included in the meta-analysis, and the air pollutants considered included PM2.5, PM10, SO2, NO2 and O3. Most studies were retrospective and mainly conducted in developed regions. The results of meta-analysis indicated that maternal first trimester exposure to SO2 increased the risk of GDM (standardized odds ratio (OR) = 1.392, 95% confidence intervals (CI): 1.010, 1.773), while pre-pregnancy O3 exposure was inversely associated with GDM risk (standardized OR = 0.981, 95% CI: 0.977, 0.985). No significant effects were observed for PM2.5, PM10 and NO2. In conclusion, additional mechanism studies on the molecular level are needed to provide persuasive rationale underlying the air pollution-GDM relationship. Moreover, other important risk factors of GDM, including maternal lifestyle and road traffic noise exposure that may modify the air pollution-GDM relationship should be considered in future epidemiological studies. More prospective cohort studies are also warranted in developing countries with high levels of air pollution.


Asunto(s)
Contaminación del Aire , Diabetes Gestacional , Contaminantes Atmosféricos , Exposición a Riesgos Ambientales , Femenino , Humanos , Material Particulado , Embarazo , Estudios Prospectivos , Estudios Retrospectivos
17.
Sci Total Environ ; 719: 137243, 2020 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-32147111

RESUMEN

Exposure to ambient fine particulate matter (PM2.5) has been associated with vascular diseases in epidemiological studies. We have demonstrated previously that exposure to ambient PM2.5 caused pulmonary vascular remodeling in mice and increased vascular smooth muscle cells (VSMCs) viability. Here, we further demonstrated that exposure of mice to ambient PM2.5 increased urinary 8­hydroxy­2'­deoxyguanosine (8-OHdG) and cytokines concentrations in the broncheoalveolar lavage. The objective of the present study was to identify the PM2.5 components related to vascular dysfunction. Exposure to PM2.5 collected from various areas and seasons in Taiwan significantly increased viability, oxidative stress, and inflammatory cytokines secretion in VSMCs. The mass concentrations of benz[a]anthracene (BaA), benzo[e]pyrene (BeP), perylene, dibenzo[a,e]pyrene, molybdenum, zinc (Zn), vanadium (V), and nickel in the PM2.5 were significantly associated with increased viability of VSMCs. These components, except BaA and BeP, also were significantly associated with chemokine (CC motif) ligand 5 (CCL5) concentrations in the VSMCs. The effects of V and Zn on cell viability and CCL5 expression, respectively, were verified. In addition, the mass concentrations of sulfate and manganese (Mn) in PM2.5 were significantly correlated with increased oxidative stress; this correlation was also confirmed. After extraction, the inorganic fraction of PM2.5 increased cell viability and oxidative stress, but the organic fraction of PM2.5 increased only cell viability, which was inhibited by an aryl hydrocarbon receptor antagonist. These data suggest that controlling the emission of Zn, V, Mn, sulfate, and PAHs may prevent the occurrence of PM2.5-induced vascular diseases.


Asunto(s)
Material Particulado/toxicidad , Contaminantes Atmosféricos , Animales , Ratones , Músculo Liso Vascular , Estrés Oxidativo , Taiwán
18.
J Environ Manage ; 264: 110429, 2020 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-32217317

RESUMEN

Intensity-duration-frequency (IDF) curves can serve as useful tools in risk assessment of extreme environmental events. Thus, this study proposes an IDF approach for evaluating the risk of expected occurrences of extreme air pollution as measured by an air pollution index (API). Hourly data of Klang city in Malaysia from 1997 to 2016 are analyzed. For each year, a block maxima size is determined based on four different monsoon seasons. Generalized extreme value (GEV) distribution is used as a model to represent the probabilistic behavior of maximum intensity of the API, which is derived from each block. Based on the GEV model, the IDF curves are developed to estimate the extreme pollution intensities that correspond to various duration hours and return periods. Considering the IDF curves, we found that for any duration hour, the magnitude of pollution intensity tends to be high in parallel with increasing return periods. In fact, a high-intensity pollution event that poses a high risk of affecting the environment is less frequent than low-intensity pollution. In conclusion, the IDF curves provide a good basis for decision makers to assess the expected risk of extreme pollution events in the future.


Asunto(s)
Contaminantes Atmosféricos , Contaminación del Aire , Ciudades , Monitoreo del Ambiente , Malasia , Material Particulado , Medición de Riesgo
19.
J Environ Manage ; 264: 110451, 2020 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-32217326

RESUMEN

Straw open burning is common practice in agricultural production, and has been identified as highly relevant to regional haze. A variety of control measures for straw open burning have been adopted in agricultural areas to mitigate air pollution, but their contribution to air quality improvement is difficult to estimate, and has been addressed by few studies. Using Jilin Province during the post-harvest season (PHS) as a study area, we empirically evaluated the contribution of the Straw Open Burning Prohibition Plan (SOBP) to air quality improvement by response surface methodology (RMS) modeling combined with scenario analysis, and constructed and introduced a stagnant index to the RMS model. The results indicated that the adoption of the SOBP by Jilin Province in the 2018 PHS mitigated air pollution effectively. The contribution of the plan to air quality improvement was also evaluated under two scenarios: if the SOBP had been implemented during the 2015 PHS, 2016 PHS, and 2017 PHS, the cumulative PM2.5 concentration would have declined in these years by 23%, 15%, and 22%, respectively, compared with their actual values; if the SOBP had not been implemented in the 2018 PHS, the cumulative PM2.5 concentration would have increased by 10%-14% compared with the actual value. The results can provide decision makers with a reference to assess the environmental performance of the SOBP, and guidance for establishing scientific environmental regulations for cleaner agricultural production and sustainable development.


Asunto(s)
Contaminantes Atmosféricos , Contaminación del Aire , China , Monitoreo del Ambiente , Material Particulado , Estaciones del Año
20.
J Environ Manage ; 264: 110452, 2020 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-32217327

RESUMEN

The power industry of China plays an important role in reducing the carbon dioxide (CO2) and air pollutant emissions. This paper focuses on synergistic CO2 and air pollution emission reduction by implementing technical and structural measures, and explores the processes aimed at achieving the co-benefits of carbon reduction and air pollution control effectively in the power industry at a local level. The results of the analysis show that the structural measures achieve overall co-benefits, and the technical measures have a good effect in reducing the air pollution, but simultaneously increase CO2 emissions because of the additional electricity used for running air pollution control devices (APCDs). Based on the analysis of the power generation incremental cost and pollutant emission reduction cost, cost-effective approaches to attain different emission reduction targets are proposed to the power industry in four case regions. These approaches can provide policy makers and stakeholders useful and relevant policy and operation recommendations to reduce CO2 and air pollution emissions cost-effectively and promote low carbon sustainability in the power industry of China.


Asunto(s)
Contaminantes Atmosféricos , Contaminación del Aire , Dióxido de Carbono , China , Análisis Costo-Beneficio , Industrias
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