scholarly journals Magnetic Properties and Size of Microscopic Pollutant Particles in the Urban Area of Coimbra

2008 ◽  
Vol 14 (S3) ◽  
pp. 144-145 ◽  
Author(s):  
C.R. Gomes ◽  
A.M. Dinis ◽  
A.F. Rocha ◽  
E.M.C. Gomes ◽  
L.F. Neves
Keyword(s):  
Magnetic Properties ◽  
Particulate Matter ◽  
Human Health ◽  
Urban Area ◽  
Motor Vehicle ◽  
Air Pollutant ◽  
Nerium Oleander ◽  
Vehicle Traffic ◽  
Pollution Levels ◽  
The City

Pollutant particles of small size are produced and resuspended every day as a result of traffic. These particles, identified as particulate matter (PM10, PM2.5), can affect human health when inhaled, mostly the respiratory and cardiopulmonary systems. Some of these particles are ferromagnetic (s.l.) and their magnetic properties indicate their sources, composition and size. Coimbra is an inland city situated in the center of Portugal at a distance of 40 km from the coast. Coimbra has a total area of 320 km2 and a population of about 168.000. Motor vehicle traffic is the main source of air pollutant in the city. The main goal of this research is to assess pollution levels in the urban area of Coimbra using the magnetic properties of microscopic pollutant particles on Nerium oleander leaves.

scholarly journals Assessment of PM10 in Aurangabad City of Central India

2016 ◽  
Vol 5 (2) ◽  
pp. 61-74 ◽  
Author(s):  
Geetanjali Kaushik ◽  
Arvind Chel ◽  
Sangeeta Shinde ◽  
Ashish Gadekar
Keyword(s):  
Air Pollution ◽  
Particulate Matter ◽  
Fine Particulate Matter ◽  
Tall Buildings ◽  
Central India ◽  
Air Pollutant ◽  
Traffic Density ◽  
High Pollution ◽  
High Concentrations ◽  
The City

Almost 670 million people comprising 54.5% of our population reside in regions that do not meet the Indian NAAQS for fine particulate matter. Numerous studies have revealed a consistent correlation for particulate matter concentration with health than any other air pollutant. Aurangabad city a rapidly growing city with population of 1.5 million is home to five major industrial areas, the city is also known for its historical monuments which might also be adversely affected from air pollution. Therefore, this research aims at estimating PM10 concentrations at several locations across Aurangabad. The concentration of PM10 was highest at the Railway Station followed by Waluj (an industrial zone) and City chowk is the centre of the city which has high population, tall buildings, few open spaces which causes high congestion and does not allow the particulates to disperse. Other locations with high concentrations of PM are Mill corner, Harsul T-point, Kranti Chowk, Seven Hill, TV centre and Beed Bye pass. All these locations have narrow roads, high traffic density, poor road condition with pot holes and few crossing points which cause congestion and vehicle idling which are responsible for high pollution. Therefore, it is evident that air pollution is a serious issue in the city which may be further aggravated if it is not brought under control. Hence, strategies have to be adopted for combating the menace of air pollution.INTERNATIONAL JOURNAL OF ENVIRONMENTVolume-5, Issue-2, March-May 2016, Page :61-74

The Impact of The Pico Y Placa Policy On Fine Particulate Matter In Lima, Peru

2021 ◽  
Author(s):  
Yovitza Romero ◽  
Priyanka deSouza ◽  
Fabio Duarte ◽  
Patrick Kinney ◽  
Carlo Ratti ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Fine Particulate Matter ◽  
Vehicular Emissions ◽  
Government Officials ◽  
Pollution Levels ◽  
Particulate Matter Concentration ◽  
Fine Particulate ◽  
The Impact ◽  
The City ◽  
Matter Concentration

Abstract Lima has been ranked among the top most polluted cities in the Americas. Vehicular emissions are the dominant source of pollution in the city. In order to reduce congestion and pollution levels during the XVIII Pan- and Parapan-American Games, Lima government officials enacted the pico y placa policy to restrict the number of vehicles on certain heavily trafficked roads in the city at rush hours between Monday to Thursday based on the last digit of their license plates. This policy was retained after the Games. In this paper we evaluate the impact of this policy on fine particulate matter concentration levels (PM2.5) at a background site in the city using a difference-in-difference approach. We find that the policy resulted in increases on PM2.5 levels on Monday-Thursday compared to Friday-Sunday levels after the policy was enacted, compared to previous years. However, such an increase was not significant. These results suggest the need for additional policies to reduce pollution due to traffic in Lima. It also suggests the need to track the response to this policy over time to evaluate its efficacy.

scholarly journals Study of Air Quality at One of the World’s Most Densely Populated City Dhaka and its Suburban Areas

2019 ◽  
Vol 43 (1) ◽  
pp. 59-66
Author(s):  
Mohammad Lokman Hossain ◽  
Subrata Chandra Roy ◽  
Mithun Chandra Bepari ◽  
Bilkis Ara Begum
Keyword(s):  
Particulate Matter ◽  
Urban Area ◽  
Power Plants ◽  
Winter Season ◽  
Atmospheric Particulate Matter ◽  
Suburban Areas ◽  
Air Sampler ◽  
Pm10 And Pm2.5 ◽  
Academy Of Sciences ◽  
The City

Air borne particulate matter PM10 and PM2.5 were collected by using Mini Vol portable Air Sampler from the world most densely populated city Dhaka and its suburban areas over a period of January through December in 2016. This study revealed a comparison of atmospheric particulate matter (PM) of a highly polluted urban area to its two neighboring areas that accommodate heavy oil based power plants. In all three sites the quantity of PM decreases in summer reaching its lowest level in the month of July, however, it increases significantly in winter season. Despite the presence of the fuel based power plants the average concentrations of PM10 and PM2.5 at the city Dhaka surpasses its two neighbors Manikganj and Nawabganj. Interestingly, PM2.5/PM10 ratio is higher at the suburban areas than urban area. The study shows that for all the sites PM2.5 is approximately twice than that of WHO and USEPA. However, the values of PM2.5 is almost similar for Nawabganj and Manikganj but much higher for the Dhaka city especially during dry season . The Mass concentration of Black Carbon (BC) was also determined from the PM samples from Manikganj and Nawabganj. Journal of Bangladesh Academy of Sciences, Vol. 43, No. 1, 59-66, 2019

Benzene emissions from motor vehicle traffic in the urban area of milan: Hypothesis of health impact assessment

1995 ◽  
Vol 29 (23) ◽  
pp. 3559-3569 ◽  
Author(s):  
G. Guerra ◽  
A. Lemma ◽  
D. Lerda ◽  
C. Martines ◽  
G. Salvi ◽  
...  
Keyword(s):  
Impact Assessment ◽  
Urban Area ◽  
Health Impact Assessment ◽  
Motor Vehicle ◽  
Health Impact ◽  
Vehicle Traffic

Motor Vehicle Traffic-Induced Vibration Characteristics of the Ground and Urban Pedestrian Overpass

2014 ◽  
Vol 501-504 ◽  
pp. 1243-1246
Author(s):  
Qing Chi Cai ◽  
Yuan Li ◽  
Qi Liang Liu ◽  
Zhen Li
Keyword(s):  
Finite Element ◽  
Adverse Reactions ◽  
Motor Vehicle ◽  
Element Model ◽  
Beijing City ◽  
Pedestrian Bridge ◽  
Vehicle Traffic ◽  
Design Specifications ◽  
Traffic Loads ◽  
The City

Since the 21st century, Beijing accelerate the process of internationalization. The level of the construction of Beijing city also faced a new challenge. The city traffic problems in Beijing is badly in need of improving. The stiffness of pedestrian bridge is so low that produce large vibration in the influence of ground traffic, which has a psychological effect on the pedestrian, even may cause psychological panic, anxiety and other adverse reactions. This study by monitoring the footbridge vibration at Beijing City Garden Road ,establishing finite element model to know about its severity under Motor vehicle traffic loads to get Vibration mechanics parameters. Use ISO, UK, Japan bridge design specifications and standard to check to make a scientific and reasonable evaluation on the vibration comfort about it.

Analysis of the impact on air quality of motor vehicle traffic in the Milan urban area

1991 ◽  
Vol 25 (3) ◽  
pp. 415-428 ◽  
Author(s):  
A. Bardeschi ◽  
A. Colucci ◽  
V. Gianelle ◽  
M. Gnagnetti ◽  
M. Tamponi ◽  
...  
Keyword(s):  
Air Quality ◽  
Urban Area ◽  
Motor Vehicle ◽  
Vehicle Traffic ◽  
The Impact

scholarly journals Seasonal Variations of Fine Particulate Matter and Mortality Rate in Seoul, Korea with a Focus on the Short-Term Impact of Meteorological Extremes on Human Health

Atmosphere ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 151
Author(s):  
Sun Kyoung Park
Keyword(s):  
Particulate Matter ◽  
Cerebrovascular Disease ◽  
Human Health ◽  
Fine Particulate Matter ◽  
Weather Conditions ◽  
Health Impact ◽  
Air Pollutant ◽  
Fine Particulate ◽  
Pollutant Concentrations ◽  
The Impact

Rapid industrialization of Korea’s economy has brought with it environmental pollution that threatens human health. Among various other pollutants, ambient fine particulate matter known to endanger human health often exceeds air quality standards in Seoul, South Korea’s capital. The goal of this research is to find the impact of meteorological extremes and particle levels on human health. The analysis was conducted using hourly air pollutant concentrations, meteorological variables, and the daily mortality from cerebrovascular disease. Results show that the effect of fine particulate matter on mortality from cerebrovascular disease was more noticeable during meteorological extremes. The linkage between extreme weather conditions and mortality was more apparent in winter than in summer. Comprehensive studies of various causes of diseases should be continued to more accurately analyze the effects of fine particulate matter on human health and meteorological extremes, and to further minimize the public health impact of air pollution and meteorological conditions.

scholarly journals Modeling study of PM<sub>2.5</sub> pollutant transport across cities in China's Jing–Jin–Ji region during a severe haze episode in December 2013

2015 ◽  
Vol 15 (3) ◽  
pp. 3745-3776 ◽  
Author(s):  
C. Jiang ◽  
H. Wang ◽  
T. Zhao ◽  
T. Li ◽  
H. Che
Keyword(s):  
Particulate Matter ◽  
Wind Speed ◽  
Pollution Source ◽  
Lower Atmosphere ◽  
Surrounding Area ◽  
Southerly Wind ◽  
Beijing Area ◽  
Pollution Levels ◽  
Haze Episode ◽  
The City

Abstract. To study the influence of particulate matter (PM) transported from surrounding regions on the high PM2.5 pollution levels in Beijing, the GRAPES-CUACE model was used to simulate a serious haze episode that occurred on 6–7 December 2013. The results demonstrate the model's suitability for describing haze episodes throughout China, especially in the Beijing–Tianjin–Hebei (Jing–Jin–Ji) region. A very close positive correlation was found between the southerly wind speed over the plain to the south of Beijing and changes in PM2.5 in Beijing, both reaching maximum values at ca. 900 hPa, suggesting the lower atmosphere was the principal layer for pollutant PM transport from its southern neighboring region to Beijing. During haze episodes, and dependent upon the period, Beijing was either a pollution source or sink for its surrounding area. PM input from Beijing's environs was much higher than the output from the city, resulting in the most serious pollution episode, with the highest PM2.5 values occurring from 00:00 to 10:00 UTC 7 December 2013. PM pollutants from the environs of the city accounted for over 50% of the maximum PM2.5 values reached in Beijing. At other times, the Beijing area was a net contributor to pollution in its environs.

scholarly journals Temporal Variation of Particulate Matter Concentrations within the Urban Area of Athens, Greece

2016 ◽  
Author(s):  
Hina Najam ◽  
Konstantinos Moustris ◽  
Panagiotis Nastos
Keyword(s):  
Particulate Matter ◽  
Temporal Variation ◽  
Urban Area ◽  
Cold Period ◽  
City Center ◽  
Heating Systems ◽  
Suburban Areas ◽  
Significant Seasonal Variation ◽  
High Concentrations ◽  
The City

The main objective of this work is to investigate the temporal variation of PM10 concentrations within the urban area of Athens during the years 2001-2015. For this purpose, the time series of the particulate matter with aerodynamic diameter less than 10&mu;m (PM10) is recorded for a 15-year period (2001-2015) in two different monitoring stations located in the urban area of Athens. The results show a totally different behavior of PM10 concentrations between the Athens city center and the suburban areas. It seems that in the city center the main sources of PM10 are traffic and heating systems especially during the cold period of the year. Furthermore, in the city center a significant seasonal variation was found with high concentrations during the cold period of the year and lower concentrations during the warm period of the year. Moreover, it was found that during the weekends, there is a decrease in PM10 concentrations probably due to the fact that majority of people do not use their vehicles. Finally, for both locations a significant temporal decreasing trend of the mean annual PM10 concentrations was found which indicates that during the last years, there have been improvements towards a better air quality.

Sign in / Sign up

Export Citation Format

Share Document