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Air Pollution - DOAJ

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Last Updated: 08 May 2022

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Relationship Between Exposure to Sulphur Dioxide Air Pollution, White Cell Inflammatory Biomarkers and Enzymatic Infarct Size in Patients With ST-segment Elevation Acute Coronary Syndromes

Aims: To investigate the connection between air pollutants, markers of inflammation, and infarct size in patients with acute coronary syndrome. The average mean values of the air pollutants from the day before to 7 days before admission were determined. Patients with severe MIs had a higher neutrophil:lymphocyte ratio and leukocyte and neutrophil counts than patients with smaller MIs. According to a multivariate study, sulphur dioxide levels and neutrophil/lymphocyte ratios were independent predictors of infarct size. Patients with significant MI had higher white cell inflammatory levels and had been exposed to elevated sulphur dioxide levels in the ambient air.

Source link: https://doi.org/10.15420/ecr.2021.37


Does vertical environmental protection pressure promote convergence of urban air pollution?

For cities with high PM2. 5 concentrations, a reliable government, vertical environmental protection pressure could be a helpful tactic to encourage cities with higher PM2. 5 levels to minimize haze pollution more effectively than those with low PM2. 5 content. This report investigates the effect of the VEPP of Chinese local governments on the convergence of PM2. 5 concentrations by a nonparametric distribution dynamics model, which incorporates parametric regression analysis and nonparametric distribution dynamics analysis. However, simply increasing VEPP will not necessarily solve the air pollution epidemic in Chinese cities during the winter months.

Source link: https://doi.org/10.1016/j.jik.2022.100186


Ambient and indoor air pollution exposure and adverse birth outcomes in Adama, Ethiopia

In Ethiopia, a high dual burden of ambient and indoor air pollution has been identified, but studies investigating their effects on adverse birth outcomes are still lacking. In Adama, Ethiopia, this report explores the correlation between ambient air pollution and indoor air pollution, fetal and neonatal deaths. NOX and NO2 at the residential address were tested using previously developed land-use regression models, although kitchen fuel type data was obtained from questionnaires. The results point to a strong relationship between ambient NOX and NO2 exposure during pregnancy, which increases the risk of fetal death overall as well as stillbirth, in particular. As limited evidence on the effects of ambient air pollution exposure on adverse birth outcomes exists in Sub-Saharan Africa and Ethiopia, additional research with larger study populations should be conducted.

Source link: https://doi.org/10.1016/j.envint.2022.107251


In-utero exposure to air pollution and early-life neural development and cognition

Air pollution remains one of the world's biggest health threats. Multiple adverse birth outcomes are observed during pregnancy, as well as life-long health risks, according to Maternal exposure to air pollution. Given that a healthy intrauterine environment is a key factor in normal foetal brain development, it is important to know how prenatal exposure to air pollution can influence brain health and neurological dysfunction.

Source link: https://doi.org/10.1016/j.ecoenv.2022.113589


Air pollution monitoring: development of ammonia (NH 3 ) dynamic reference gas mixtures at nanomoles per mole levels to improve the lack of traceability of measurements

Monitoring stations in Europe air quality surveillance networks monitor atmospheric NH 3 amount-of-substance fractions. However, a common problem of the networks is the absence of consistent reference gas mixtures of ammonia chemistry fractions that are not consistent, traceable, or, in the case of geographically comparable results, which results in estimates that are not reliable, traceable, or, in the case, geographically comparable. LNE developed, in close collaboration with the company 2M PROCESS, a gas reference generator that could dynamically produce NH 3 RGMs in air to cover this gap. The method is based on gas permeation and a further dynamic dilution technique to produce an amount-of-substance fractions ranging from 1 to 400 nmol mol 1 to include ammonia measurement in ambient air and the monitoring network's operating range. The generator's calibration against the LNE primary standards guarantees traceability of RGMs to the international system of units. Furthermore, the reference generator's highly accurate flow and oven temperature measurements, as well as the associated calibration procedure, LNE's associated calibration procedure, have significantly increased uncertainties in the calibration of the NH 3 analyzers that are lower than 2 percent. The findings revealed a good relationship between the NH 3 reference generators developed by the two institutes, which enabled the validation of both LNE's reference generator and calibration procedure. Using the newly introduced SI-traceable RGMs, LNE has calibrated several NH 3 analyzers from the French air quality monitoring networks since the end of 2020.

Source link: https://doi.org/10.5194/amt-15-2703-2022


Toxicological effects of traffic-related air pollution on the lungs: Evidence, biomarkers and intervention

Background: Several epidemiological studies have discovered that exposure to traffic-related air pollution has been correlated with an elevated risk of various respiratory diseases. Airway hyperresponsiveness revealed the lung injury caused by GEP exposure for the first time. GEP exposure significantly increased the airway resistances and reduced the lung compliance in comparison to the control group; the more severe the lung injury is, the greater the lung injury is. The increase of inflammatory cells, including lymphocytes and neutrophils, in the BAL fluid, also highlighted Lung injury. Histological changes in the lung tissues were even more apparent with the increase in GEP dose: inflammation cell infiltration increased and alveolar wall thickened. However, the VE's administration of VE was found to be very helpful in restoring airway injuries. Conclusion: Evidence and biomarkers support traffic-related air pollution on rat lungs, and vitamin E intervention is feasible.

Source link: https://doi.org/10.1016/j.ecoenv.2022.113570


Impact of the COVID-19 Restrictive Measures on Urban Traffic-Related Air Pollution in Serbia

This report has investigated the traffic-related rise in atmospheric pollution levels resulting from the COVID-19 restorative steps, based on traffic ground-based stations data in Serbian urban areas. The obtained data indicated a positive correlation of daily NO2 concentrations with mobility, with a notable decrease when tightening restrictions at all selected monitoring stations. The reduction of NO2 in Serbia was higher than in other countries, indicating a high traffic effect on NO2 levels in Serbia. NO2 and SO2 concentrations decreased during restriction relative to the same period in previous years. However, the concentrations of PM2. 5, PM10, and CO increased in the period with tighter restrictions, indicating less sensitivity to population mobility and greater reliance on other emission sources in comparison to previous years. The findings point to the justification of the use of traffic management techniques to improve air quality.

Source link: https://doi.org/10.3389/fenvs.2022.823973


Air pollution and individuals' mental well-being in the adult population in United Kingdom: A spatial-temporal longitudinal study and the moderating effect of ethnicity.

This report examines the effect of air pollution on reported mental health in the United Kingdom using spatial-temporal longitudinal methodology and assesses the moderating effect of ethnicity. Using multi-effect logit models, the relationship between air pollution and mental health, as well as changes by ethnicity and being non-UK born was assessed. The conversion of air pollution into spatial-temporal effects was significant between, but not within causes; in this sense, living in more polluted localities/LSOAs had a greater effect on poor mental health and longevity than the air pollution gradient within each geographical region. Compared to British-white and natives, increasing numbers of SO2, PM10, and PM2. 5 indicate poor mental stability, particularly among Pakistani/Bangladeshi, other-ethnicities, and non-UK residents, but not for other ethnic groups. Environmental steps to minimize air pollution emissions may eventually boost people's mental stability.

Source link: https://doi.org/10.1371/journal.pone.0264394


Modeling Air Pollution In Dong Nai Province, Vietnam

According to a data review, dust and CO have a high prevalence, resulting in air pollution. In the study area, the method inverse distance weighting has been found to be efficient in modeling atmospheric pollution space. Pollution levels in the following areas are increasing gradually: Residential areas Waste treatment facilities Industrial parks.

Source link: https://doi.org/10.24057/2071-9388-2019-44


Addressing Air Pollution And Beyond In Ulaanbaatar: The Role Of Sustainable Mobility

All around the world, the transportation industry contributes to local air pollution, carbon dioxide pollution, and transportation related issues such as congestion, particularly in urban agglomerations. Although Ulaanbaatar traffic is now not the most significant source of air pollution, it will continue to rise due to increasing demand for transport and related effects. A two-step strategy is required for a more short-term improvement in a city that must be managed, as well as related planning methods, which are particularly relevant in a situation where urban growth must be controlled. A more short-term solution to a more sustainable transportation system and a long-term strategy to organise urban mobility in a sustainable manner.

Source link: https://doi.org/10.24057/2071-9388-2019-30

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions