An Assessment of the Ambient Air Quality around Major Road Intersections within Warri Metropolis

2013 ◽  
Vol 824 ◽  
pp. 650-655
Author(s):  
S.A. Ogunnowo ◽  
A.I. Igbafe
Keyword(s):  
Air Quality ◽  
Heavy Traffic ◽  
Ground Level ◽  
Ambient Air ◽  
Ozone Production ◽  
Major Road ◽  
Production Environment ◽  
Ambient Air Quality ◽  
Residential Areas ◽  
Road Junctions

An evaluation of the ambient air quality of emitted gases and particles at major road junctions within Warri conurbation was carried out. The study was aimed at ascertaining if air pollution levels exceeded the acceptable limits during weekdays as well as attempt to target the root causes. Ambient air was monitored from strategic locations at eight major road junctions sparsely distributed within residential areas for in-situ measurement of NO2, SO2, CO and PM10 concentrations. Monitoring was done consecutively for a period of two weeks at four single-carriage and four dual-carriage roads to test the contributions of traffic on air quality. The averages of the minimum and the maximum daily observations over the entire sampling period ranged between 0.02452ppm and 0.05684ppm for NO2, while that of SO2 ranged between 0.00564ppm and 0.05654ppm, and that of CO ranged between 0.438ppm and 4.890ppm, whereas PM10 yielded 13.602μg/m3 as minimum and 122.124μg/m3 as maximum levels. As was expected, concentrations from all the single carriage roads were higher than those from the dual carriage roads owing to the heavy traffic congestions in single-lane roads. This study also revealed that only the NO2 values obtained around Robinson plaza and Warri main market junctions were perilously close to the specified FMENV levels for hourly exposure. This being that there were rapid oxidation of NO to NO2 from vehicular emissions. However, the presence of high levels of NO2 is synonymous to high ground level ozone production environment, consequently, a high oxidation region of free radicals which could lead to more particulate matter formation during advection.

scholarly journals Ambient Air Quality in the Czech Republic: Past and Present

Atmosphere ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 214 ◽  
Author(s):  
Iva Hůnová
Keyword(s):  
Air Pollution ◽  
Czech Republic ◽  
Air Quality ◽  
Transition Period ◽  
Ground Level ◽  
Ambient Air ◽  
Ambient Air Pollution ◽  
Ambient Air Quality ◽  
Limit Values ◽  
Pollution Impacts

Based on an analysis of related core papers and reports, this review presents a historical perspective on ambient air pollution and ambient air quality development in the modern-day Czech Republic (CR) over the past seven decades, i.e., from the 1950s to the present. It offers insights into major air pollution problems, reveals the main hot spots and problematic regions and indicates the principal air pollutants in the CR. Air pollution is not presented as a stand-alone problem, but in the wider context of air pollution impacts both on human health and the environment in the CR. The review is arranged into three main parts: (1) the time period until the Velvet Revolution of 1989, (2) the transition period of the 1990s and (3) the modern period after 2000. Obviously, a major improvement in ambient air quality has been achieved since the 1970s and 1980s, when air pollution in the former Czechoslovakia culminated. Nevertheless, new challenges including fine aerosol, benzo[a]pyrene and ground-level ozone, of which the limit values are still vastly exceeded, have emerged. Furthermore, in spite of a significant reduction in overall emissions, the atmospheric deposition of nitrogen, in particular, remains high in some regions.

Impact of Alternate Fuels on Stationary Gas Turbine Operations and Siting

1974 ◽  
Author(s):  
F. W. Lipfert
Keyword(s):  
Air Quality ◽  
Gas Turbine ◽  
Ground Level ◽  
Quality Standards ◽  
Ambient Air ◽  
Particulate Emissions ◽  
Ambient Air Quality ◽  
Short Term ◽  
Home Heating ◽  
Alternate Fuels

An analysis of gas turbine ambient air quality impact is presented, from the standpoint of the acceptability of alternate fuels having higher sulfur content and possibly higher particulate emissions. Various plume rise formulas are compared, and formulas are given for maximum ground level concentrations for both short term (1 to 3 hr) and intermediate (3 to 24 hr) periods. The results show that the U.S. Federal Air quality standards may allow large gas turbine complexes (∼500 mw) burning up to 1% sulfur fuel, for example. Taking advantage of this capability could increase the supply of lower sulfur fuels for home heating and/or transportation use.

scholarly journals Application of the "SIX SIGMA" method for the analysis of the improvement of the environmental air quality parameters at the municipality of Bucharest, by monitoring the pollutances of NOX pollutants

2020 ◽  
Author(s):  
Ion Durbaca ◽  
Nicoleta Sporea ◽  
Dana-Claudia Farcas-Flamaropol ◽  
Elena Surdu
Keyword(s):  
Air Quality ◽  
Six Sigma ◽  
Harmful Effect ◽  
Ground Level ◽  
Ambient Air ◽  
Quality Parameters ◽  
Maximum Efficiency ◽  
Ambient Air Quality ◽  
High Concentrations ◽  
Environmental Air

This paper analyzes the improvement of ambient air quality indicators by monitoring the NOx concentration in one of the most polluted areas of Bucharest, using the statistical method "SIX SIGMA" (6σ). By applying the methodology of this statistical approach, the aim is to reduce non-conformities within the specified limits (according to the standards and legislative norms in force) and respectively, to ensure maximum efficiency (99,99%), equivalent to a yield of 3.4 defects per million opportunities (DPMO). As high concentrations of air pollutants have a major impact on human health, the most harmful effect has been found to be caused by nitrogen dioxide (NO2), mainly from ground-level ozone. Using the "6σ" method, the optimal solutions for eliminating non-conformities and implicitly for reducing the NO2 concentration and ensuring the improvement of the ambient air quality can be identified.

scholarly journals Ambient air quality of Katra Town (J&K): A Study with Reference to atmospheric particulates

2013 ◽  
Vol 14 (1&2) ◽  
pp. 113-119
Author(s):  
Anil K. Raina ◽  
Anita Sharma
Keyword(s):  
Particulate Matter ◽  
Air Quality ◽  
Monsoon Season ◽  
Ambient Air ◽  
Ambient Air Quality ◽  
Residential Areas ◽  
Monsoon Period ◽  
Post Monsoon ◽  
The Impact

The monitoring of ambient air quality of Katra (one of the important town of Jammu from economic as well as religious point of view), at selected locations of residential areas, commercial areas and traffic crossings with respect to particulate matter (both respirable and non-respirable) has been conducted for a period of two years i.e. July 2010 – June 2012. Large variations in ambient particulate matter concentrations have been observed throughout the study period. Seasonally, the particulate matter exhibited low values during monsoon period and high values during post-monsoon period. The concentration of particulates (both respirable and non-respirable) in post monsoon season exceeded the concentrations than that of other seasons at most of the sites, thereby signifying the impact of local factors on pollutant concentrations, besides the impact of meteorological factors. Higher concentrations have been recorded in the year 2011-2012 as compared to 2010-2011 at all the sites except traffic crossings.

scholarly journals KAJIAN PARTICULATE MATTER DAN KEBISINGAN PADA PERMUKIMAN DI SEKITAR JALAN TOL KEDUNGMUNDU SEMARANG

2021 ◽  
Vol 2 (1) ◽  
pp. 54
Author(s):  
Andarina Aji Pamurti
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Ambient Air ◽  
Residential Area ◽  
Toll Roads ◽  
Ambient Air Quality ◽  
Residential Areas ◽  
Toll Road ◽  
Daily Average ◽  
Pm2.5 And Pm10

<div><table cellspacing="0" cellpadding="0"><tbody><tr><td align="left" valign="top"><p><em>The construction of toll roads has a positive impact to facilitate the mobility rate of the community. But the construction of toll roads also has a negative impact on the residential area around the toll road, namely air pollution due to the burning of vehicle fuel. PM2.5 and PM10 air particles are particles that damage the working system of the lungs. The health of the environment where settled is an important support that affects health, especially in the era of pandemic covid. Air particle measurement using portable PM2.5 and PM10 Air Quality Tester Detector. The daily average level of PM2.5 particles in residential areas around Semarang's Kedungmundu toll road is 65.44 μg/Nm³, while the PM10 particle content is 95.2 μg/Nm³. PM2.5 levels exceed the standards of the National Ambient Air Quality Standard (BMUA), The WHO Air Quality Guidline and Ambient Air Quality Standards (USEPA). For PM10 exceeds WHO standard. In addition to air pollution, another impact is that these residential areas have noise. The daily average noise value when measuring the sampling time is 62.23 dB, this value is exceeding the standard threshold of the Regulation of the Minister of Environment for residential areas. So the residential area around Kedungmundu Semarang toll road is less feasible for health when viewed from the value of PM 2.5 and PM10 as well as noise. This study aims to determine the level of PM2.5 and PM10 particles as well as noise in residential areas around the Kedungmundu Semarang toll road. Once the measurement results are obtained, it will be used as a reference for planners to provide solutions for settlements that have an impact due to toll road construction activities with dense vehicle intensity.</em></p></td></tr></tbody></table></div>

scholarly journals IMPACT OF URBAN LAND USES AND ACTIVITES ON THE AMBIENT AIR QUALITY IN KLANG VALLEY, MALAYSIA FROM 2014 TO 2020

2020 ◽  
Vol 18 (14) ◽  
Author(s):  
Oliver Hoon Leh Ling ◽  
Marlyana Azyyati Marzukhi ◽  
Jie Kwong Qi ◽  
Nurul Ashikin Mabahwi
Keyword(s):  
Air Quality ◽  
Urban Areas ◽  
Air Pollutants ◽  
Ambient Air ◽  
Air Pollutant ◽  
Land Uses ◽  
Ambient Air Quality ◽  
Residential Areas ◽  
Klang Valley ◽  
The Impact

Ambient air in the urban area normally is more polluted than less developed areas. This is due to the concentration of urban activities, such as industrial, transportations and commercial or business activities. A study about the impact of urban land uses and activities on the levels of air pollutants in Malaysia’s most urbanised and most developed region that is Klang Valley was conducted. Data of Air Pollutant Index (API) and average concentration of selected air pollutants were used to analyse the ambient air quality of the selected five (5) cities or towns in Klang Valley. The air quality condition of the five (5) cities or towns were related to the land use distributions of the cities or towns with a purpose to understand the impact of land uses on the ambient air quality. Furthermore, the changes of ambient air quality before and after Movement Control Order (MCO) were analysed to examine the impact of human activity changes on the ambient air quality. The study found that a city or a town with more industrial and transportation land uses with fewer greens was more polluted than the area with less industrial and transportation land uses with more greens. However, this finding did not apply to all areas due to effect of winds on the distribution of air pollutants. Besides that, because of MCO, most people stayed at home with the mode of “work from home” that caused air pollutant levels in urban areas to decrease due to less urban activities. Nevertheless, there was a risk of an increase in air pollution levels in residential areas due to the concentration of activities, especially driving motor vehicles in residential areas. A recommendation is given to encourage “work from home” and reduce dependency on auto-mobile in residential areas in order to improve the air quality in urban areas.

Hygienic Assessment of Ambient Air Quality in Chita, a Priority Area of the Federal Clean Air Project

2020 ◽  
pp. 16-22
Author(s):  
SV Klein ◽  
EV Popova
Keyword(s):  
Air Quality ◽  
Action Planning ◽  
Ambient Air ◽  
Quality Monitoring ◽  
Air Quality Monitoring ◽  
Ambient Air Quality ◽  
Residential Areas ◽  
Clean Air ◽  
The City ◽  
Fold Excess

Introduction: The article is devoted to poor ambient air quality in some cities of the Russian Federation, one the most important social and environmental issues of today. The city of Chita is a priority area in term of ambient air pollution included in the Federal Clean Air Project of the National Ecology Project. Our objective was to assess air quality in residential areas of the city for a further improvement of the ambient air quality monitoring system and air quality action planning. Materials and methods: We analyzed the results of measuring ambient air quality at the monitoring sites of the government environmental monitoring system for 2014–2018 and statistical data on the volume and composition of industrial emissions. The spatial analysis of the impact of enterprises on residential areas was carried out in accordance with the guidelines of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing (Rospotrebnadzor). Results and discussion: We established high concentrations of benzo(a)pyrene (up to a 10.5-fold excess of the average daily maximum permissible concentration (MPC)), particulate matter (up to a 1.63-fold excess of the average daily MPC and a 11.4-fold excess of the single MPC), nitrogen dioxide (up to a 1.18-fold excess of the average daily MPC), hydrogen sulfide (up to a 11.94-fold excess of the single MPC), phenol, soot, and some other hazardous air contaminants. We determined priority sources of anthropogenic emissions and other factors contributing to poor air quality in Chita. Conclusions: Our findings indicate the necessity to enhance the existing ambient air quality monitoring network and programs, to assess spatial distribution of resulting exposure levels and population health risks, and to decide on the adequacy of the air quality action planning in the city of Chita in accordance with the comprehensive plan.

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