scholarly journals Study on Ambient Particulate Matter (PM2.5) with Different Mode of Transportation in Dhaka City, Bangladesh

2019 ◽  
pp. 12-19
Keyword(s):  
Air Pollution ◽  
Public Transportation ◽  
Ambient Air ◽  
Dhaka City ◽  
Minimum Concentration ◽  
Sources Of Pollution ◽  
Transportation Service ◽  
Private Car ◽  
Mode Of Transportation ◽  
The City

Air pollution is considered a threat to the environment in developing countries. This study aims to quantify the concentration of PM2.5 in relation to the mode of transportation in the different areas of Dhaka city. For this, the concentration of PM2.5 was measured in ambient air with Ecotech Mini 2.5 Sampler and traffic volume survey was conducted in 12 sites across the city on August 2017. The study found that PM2.5 concentrations in mixed and motorized areas were on average higher than non-motorized and vehicle-free area. The maximum concentration of PM2.5 was found in Mirpur-10 (172.2 µg/m3) while minimum concentration was in B.C. das street (40 µg/m3). This study concluded that increasing the number of vehicles is one of the major sources of pollution of air in Dhaka city. Hence, well-developed public transportation service instead of the private car may contribute to reducing the air pollution in Dhaka city.

scholarly journals Particulate Matter Management Plan for Prayagraj City Based Upon Emissions

2021 ◽  
Vol 9 (8) ◽  
pp. 2820-2825
Author(s):  
Anmol Sharma
Keyword(s):  
Air Pollution ◽  
Particulate Matter ◽  
Fossil Fuels ◽  
Action Plan ◽  
Road Dust ◽  
Ambient Air ◽  
Management Plan ◽  
Vehicular Pollution ◽  
Sources Of Pollution ◽  
The City

Abstract: Air Pollution has become one of the significant factors behind the increase in world-wide mortality rate. There are several reasons behind this increased rate such as rapid growth of industrialization, vehicular pollution accompanied by increase in urbanisation and burning of fossil fuels. This paper presents the proper management and mitigation plan (action plan) of air pollution scenario for the city Prayagraj based upon emissions. Some major air pollutants under consideration in the city of Prayagraj are Particulate Matter (PM10) and particulate matter (PM2.5). There are several prominent sources within and outside prayagraj contributing to PM10 and PM2.5 ambient air; these pollutants can be taken as surrogate of other pollutants also, as most of the pollutants coexist and have common sources. Several major sources of pollution in the city have been noted such as from Domestic, Vehicular Pollution, Road dust, Municipal solid waste (MSW) and Brick kiln. Based upon emissions calculated from these major sources a proper mitigation and management plan has been prepared for the city. Keywords: Air pollution, Particulate Matter, Prayagraj city, Action Plan, Emissions.

scholarly journals THE USE OF RESULTS OF THE CALCULATION OF ATMOSPHERIC POLLUTION FOR THE SOCIAL HYGIENIC MONITORING

2019 ◽  
Vol 96 (4) ◽  
pp. 306-309 ◽  
Author(s):  
A. V. Kiselev ◽  
Ya. V. Grigoreva
Keyword(s):  
Air Pollution ◽  
Ambient Air ◽  
Hazardous Substances ◽  
Ambient Air Pollution ◽  
Annual Average ◽  
Saint Petersburg ◽  
Sources Of Pollution ◽  
The Social ◽  
Index Estimation ◽  
The City

Purpose of the study. The investigation of the character of the formation of statistical presentation of data about ambient air pollution within the borders of Saint-Petersburg administrative areas on the basis of simulation data of hazardous substances (air emissions) transfer from priority sources into the lowest atmospheric layer with their following assessment according to standards, population health risks and reliability of index estimation, averaged on borders of administrative areas. Material and methods. On the base of data of sources of pollution of ambient air of the city of Saint Petersburg administered by the Committee for the use of Natural Resources, Environmental Protection and Safety Calculations, implemented in the system “Ecologist-city” by the company “Integral” there were made calculations maximum one-time and annual average concentrations for all emitted substances as well as there were evaluated the carcinogenic, non-carcinogenic and chronic risks air pollution, and there was executed the assessment of the pollution according to olfactometric criteria (rate of exceeding odor threshold ). The spatial analysis of the results was concluded in averaging concentrations and values which characterize risks on the borders of the administrative areas and further performance of the estimation of the reliability of data differences of average indices on Student criteria. Results. There were investigated peculiarities of air pollution within the borders of St. Petersburg administrative areas. There was given the estimation of reliability of data differences by Student criteria for carcinogenic, non-carcinogenic (acute and chronic) risks. There were selected priority substances, which had the greatest differences in values of concentrations and risk criteria. They are nitrogen dioxide, nitrogen oxide, sulphur dioxide and benzene. There were determined areas which have statistically reliable differences on olfactometric criteria, the value of annual average and maximum one-time concentrations, by carcinogenic and non-carcinogenic (acute and chronic) risks with other areas. Conclusion. There was established the expediency of calculated monitoring of the air pollution averaged on the administrative areas.

scholarly journals Analisis Implementasi Kebijakan Pengaturan Pengoperasian Kendaraan Bentor Sebagai Moda Transportasi Di Gorontalo

2020 ◽  
Vol 9 (1) ◽  
pp. 46
Author(s):  
Andi Yusuf Katili ◽  
Nolfi S. Tueno
Keyword(s):  
Data Collection ◽  
Public Transportation ◽  
Research Method ◽  
Qualitative Approach ◽  
Descriptive Research ◽  
The People ◽  
Transportation Service ◽  
Mode Of Transportation

Bentor is a modification between a rickshaw and a motorcycle which has become a characteristic of public transportation vehicles or modes of transportation for the people of Gorontalo. Bentor can operate from one place to another, it can even take passengers to household stairs, this cannot be done by other public transportation. This advantage makes most Gorontalo people choose it as the main transportation because it operates 24 hours. The purpose of this study is to conduct an analysis of the implementation of policies on the operation of bentor vehicles as a mode of transportation based on Gorontalo Provincial Regulation No. 6 of 2006. The research method used in this research is descriptive research with a qualitative approach. Data collection techniques are carried out through observation, interviews, and documentation. The results showed that (1) Compliance of Bentor riders with traffic regulations is still low, so it is necessary to take action by the relevant authorities; (2) Coordination between officers of the Transportation Service and the Police in carrying out their duties has not been well established, so that violations continue to occur; (3) The supervision of related offices of apparatus in the field in implementing regional regulations is still low, due to the lack of officers who will be assigned as field supervisors.Bentor merupakan modifikasi antara becak dan sepeda motor yang telah menjadi ciri khas kendaraan angkutan umum atau moda transportasi masyarakat Gorontalo. Bentor dapat beroperasi dari suatu tempat ke tempat lain, bahkan dapat mengantar penumpangnya hingga ke tangga rumah, hal ini tidak dapat dilakukan oleh kendaraan umum lainnya. Kelebihan ini yang membuat sebagian besar masyarakat Gorontalo memilihnya menjadi transportasi utama karena beroperasi selama 24 jam. Adapun tujuan penelitian ini adalah untuk melakukan analisis mengenai Implementasi Kebijakan Pengaturan Pengoperasian Kendaraan Bentor Sebagai Moda Transportasi Berdasarkan Peraturan Daerah Provinsi Gorontalo Nomor 6 Tahun 2006. Metode penelitian yang digunakan dalam penelitian ini adalah penelitian deskriptif dengan pendekatan kualitatif. Teknik pengumpulan data dilakukan melalui observasi, wawancara, dan dokumentasi. Hasil penelitian menunjukkan bahwa (1) Kepatuhan pengendara Bentor terhadap peraturan berlalu lintas masih rendah sehingga perlu dilakukan penindakan oleh aparat terkait; (2) Koordinasi antara petugas Dinas Perhubungan dengan Kepolisian dalam melaksakan tugas belum terjalin dengan baik, sehingga pelanggaran pun terus terjadi; (3) Pengawasan dinas terkait terhadap aparat di lapangan dalam menjalankan peraturan daerah masih rendah, karena minimnya petugas yang akan ditugaskan sebagai pengawas lapangan.

scholarly journals Study on mapping ozone pollution and ozone pollution regime in Cantho city then propose solutions to reduce ozone pollution

2018 ◽  
Vol 1 (6) ◽  
pp. 247-257
Author(s):  
Bang Quoc Ho ◽  
Tam Thoai Nguyen ◽  
Khue Hoang Ngoc Vu
Keyword(s):  
Air Pollution ◽  
Ozone Concentration ◽  
Ambient Air ◽  
Air Pollutant ◽  
Pollutant Emissions ◽  
Ozone Pollution ◽  
Sensitive Areas ◽  
Study Results ◽  
Can Tho City ◽  
The City

Can Tho City is one the 5th largest city in Vietnam, with hight rate of economic growth and densely populated with 1,251,809 people, butsling traffic activities with 566,593 motobikes and 15,105 cars and hundreds of factories. The air in Can Tho city is polluted by dust and ozone. However, Can Tho city currently does not have a study on the simulation air pollution spread, therefore we do not have an overview on the status of air pollution in order to do not have solutions to limit the increase of pollution status of the city. The purpose of this study is to collect air pollutant emissions from other study. After that, TAPOM model is used to simulate the effects of ozone on the surrounding areas and study the ozone regime in Cantho city. The study results showed that the highest ozone concentration for an hour everage is 196 μg/m3. Compare with national technical regulation about ambient air QCVN 5:2013/BTNMT, ozone concentration is approximately at the allowable limit. The study of ozone regime had identified that VOC sensitive areas are Ninh Kieu district and a part in the south of Binh Thuy district, and NOx sensitive areas are the rested areas of Cantho city. The main cause contributing to increased VOC emission in the central area of the city is motorcycles, NOx emissions in the remaining areas of Cantho city are from the rice production factories. Proposals to protect the air quality in Cantho city are suggested.

scholarly journals RELATIONSHIP BETWEEN MAXIMUM PERMISSIBLE CONCENTRATIONS AND LEVEL OF HEALTH RISK FOR AIR POLLUTANTS

2019 ◽  
Vol 96 (5) ◽  
pp. 442-445 ◽  
Author(s):  
V. V. Suchkov ◽  
E. A. Semaeva
Keyword(s):  
Air Pollution ◽  
Health Risk ◽  
Hexavalent Chromium ◽  
Reference Range ◽  
Pollution Index ◽  
Ambient Air ◽  
Carcinogenic Risk ◽  
Daily Maximum ◽  
The Third ◽  
The City

There was executed the complex assessment of air pollution in the city Novokuibyshevsk in 2014. There were outlined basic chemicals exceeding hygienic standards, as well as causing both carcinogenic and non-carcinogenic health risk. Average concentrations of pollutants were shown to fail to exceed the average daily maximum permissible concentration, and on the basis of this air pollution index in the city of Novokuibyshevsk was the low in 2014. However, air pollution in the city of Novokuibyshevsk decreased not due to the reduction of the concentration of priority pollutants, but as a result of the revision of the admissible values for formaldehyde concentrations. Individual carcinogenic risks to the health of children under 18 years according to hexavalent chromium, benzene and formaldehyde exceeded the border of maximum permissible risk, and were attributed to the third reference range of risk values in accordance with the R 2.1.10.1920-04. The carcinogenic risk to the health of adults and the population of the city of Novokuibyshevsk as a whole was in the third reference range boundaries only for hexavalent chromium. However, the overall carcinogenic risk for health of children aged up to 18 years amounted to 1.18∙10-3 and moved into a fourth reference range boundaries. The total index of danger with all substances, the content of which was monitored in the ambient air in the city of Novokuibyshevsk, accounted for 17.74 and also demanded measures to reduce air pollution in the near future.

The Mexico City Metro and Its Riders

2018 ◽  
Author(s):  
Amanda M. López
Keyword(s):  
Public Transportation ◽  
Traffic Congestion ◽  
Mass Transit ◽  
Transit System ◽  
Architectural Elements ◽  
Cultural Life ◽  
The Status ◽  
Private Car ◽  
Political Economic ◽  
The City

Mexico City’s subway, commonly known as “el Metro,” opened its first line of service on September 4, 1969. Since then, the mass transit system, operated by the Sistema de Transporte Colectivo (STC), has expanded to include 195 stations across twelve lines that serve an estimated five and a half million riders per day. The metro was constructed not only to alleviate severe traffic congestion in the city’s center due to population growth and private car use, but also it was envisioned as part of a plan to modernize the city and raise Mexico to the status of world cities such as Paris and Montreal. The low fare has made it one of the primary modes of transportation for the city’s working class, who use it in combination with other forms of public transportation to reach jobs in distant parts of the metropolis. Some studies have shown that the Metro has exacerbated geographic segregation between rich and poor as well as perpetuated low wages. Beyond its function as a mass transit system, the Metro was envisioned as and still serves as an important cultural space. The graphic designers and architects who led the project integrated modern architectural elements with graphic embellishments and signage that incorporated national culture and history to present a modernity uniquely Mexican. In its almost fifty years of service, the Metro has become an important symbol of the capital’s cultural life that everyday Mexicans have used for their own political, economic, and cultural purposes.

Model of Motor Vehicle Gas Distribution Based on Ecology- Health, Economic, Social-Cultural and Law Factors in the City of Pekanbaru

2019 ◽  
Vol 9 (7) ◽  
pp. 1479
Author(s):  
DARIMI DARIMI ◽  
Ikhwan Siregar YUSNI ◽  
Anita SOFIA ◽  
FIRDAUS FIRDAUS ◽  
SYAHRIL SYAHRIL
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Motor Vehicle ◽  
Ecological Factors ◽  
Ambient Air ◽  
Exhaust Emissions ◽  
Gas Distribution ◽  
Ecological Data ◽  
Cultural Economic ◽  
The City

Air pollution will make the city environment unhealthy and can interfere with human health, therefore one must strive to not increase air pollution. One way to reduce air pollution in cities is to reduce carbon emissions and build Green Open Spaces (GOS). Therefore, the purpose of this study is to create a model for distribution of motor vehicle exhaust emissions in the city of Pekanbaru. Air pollution at a certain level can be a combination of one or more pollutants, either in the form of solids, liquids or incoming gases dispersed into the air and then spread to the surrounding environment. Further analysis of environmental factors in the form of socio-cultural, economic and ecological factors are explored in this study. Other important environmental parameters in pollutant studies are ecological factors as well. While the economic factors in question is the willingness to pay, it shows the minimum cost needed to anticipate the amount of exhaust emissions caused by motorized vehicles and calculate the economic value associated with public health. The emission of gas produced by each vehicle is below the predetermined standard quality threshold, namely LH Regulation No. 12 of 2010. Although the measurement results in Table 1 do not exceed ambient air quality standards, but the increase in a trend that can cause air quality deterioration was detected. The components in these two strategies need to get more emphasis and attention so that the existence of charcoal trading business can be sustainable. The results obtained from this study are a model of exhaust gas distribution in the form of gas emission distribution contours supported by ecological data (E), economics (E) and socio-cultural (S), especially in creating recommendation models in policy making both in the form of laws, government regulations or regional regulations, which is the simplest prerequisite for motor vehicle owners when the vehicle registration is extended. This model is better known as the E2S + H model.

scholarly journals Trend of Particulate Matter PM 2.5 and PM 10 in Dhaka City

1970 ◽  
Vol 46 (3) ◽  
pp. 389-398 ◽  
Author(s):  
MA Rouf ◽  
M Nasiruddin ◽  
AMS Hossain ◽  
MS Islam
Keyword(s):  
Air Pollution ◽  
Particulate Matter ◽  
Air Quality ◽  
Winter Season ◽  
Ambient Air ◽  
Quality Data ◽  
Dhaka City ◽  
Monsoon Period ◽  
Pm 2.5 ◽  
Pm 10

Dhaka City has been affecting with severe air pollution particularly by particulate matter. The ambient air quality data for particulate matter were collected during April 2002 to September 2005 at the Continuous Air Quality Monitoring Station (CAMS) located at Sangshad Bhaban, Dhaka. Data reveal that the pollution from particulate matter greatly varies with climatic condition. While the level comes down the limit value in the monsoon period (April-October), it goes beyond the limit during non-monsoon time (November-March). The latest data show that during monsoon period PM 10 concentration varies from 50 μg/m3 to 80 μg/m3 and PM 2.5 concentration from 20 μg/m3 to 60 μg/m3 and during non monsoon period PM 10 varies from 100 μg/m3 to 250 μg/m3 and PM 2.5 varies from 70 μg/m3 to 165 μg/m3. The seasonal variation clearly indicates the severe PM 10 pollution during the dry winter season and also sometime during post-monsoon season in Dhaka City. Keywords: Air pollution; PM 2.5; PM 10; Air quality DOI: http://dx.doi.org/10.3329/bjsir.v46i3.9049 BJSIR 2011; 46(3): 389-398

scholarly journals Spatial Features Transformation of Emission from Motor Vehicles in Moscow

2019 ◽  
Vol 12 (4) ◽  
pp. 57-73 ◽  
Author(s):  
Viktoria R. Bityukova ◽  
Nikita A. Mozgunov
Keyword(s):  
Air Pollution ◽  
Public Transportation ◽  
Large Scale ◽  
Research Result ◽  
Transport Infrastructure ◽  
Main Trend ◽  
Absolute Maximum ◽  
Pollution Transport ◽  
Car Park ◽  
The City

The article examines changing volumes of emission from vehicles by administrative and municipal districts of Moscow. In Moscow automobile transport is the general source of pollution, it produces more than 93% of allover, and this is the absolute maximum of impact for Russian cities and regions. In 2011-2017, it was the first time when the growth of motorization was noticed against background of reduce of pollution due to modernization of car park and new quality of petrol. Total gross emission from vehicles decreased four times. Shifts in the factors defining spatial specifics of distribution of pollution from vehicles are revealed. Assessments of air pollution based on information of all Moscow streets provides estimations for 93 thousand low-level city areas. One of the research result revealed a high correlation between changes of pollution density and changes in transport infrastructure including developing of public transportation, modernization of car park structure. Spatial uniformity of pollution from vehicles has become the main trend of recent years. Programs of the new housing construction and large-scale projects aimed at the transformation of the districts increase the transport connectivity of the city. Administrative decisions on the traffic intensity reduction in the central districts decrease territorial differentiation of pollution. Transport and planning structure at the level of the city, the district, and the area is the defining characteristic. An attempt to solve the transport problem through the transformation of the street road network complicates the application of innovative techniques for combatting air pollution in Moscow.

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