The purpose of the paper is to review the recent empirical literature relating to the quantification and valuation of the human health impacts of air pollution, hazardous chemicals, and unsafe water and sanitation, and their use in cost-benefit analysis, as an input to environmental policy decision-making. For each of these …
Exposure of humans to air pollutants such as ozone and particulate matter (PM) may result in airway and systemic inflammation and altered immune function. One putative mechanism may be through modification of cell-surface costimulatory molecules. We examined whether changes in expression of costimulatory molecules on circulating cells are associated with …
The 2008 Beijing Olympic Games provided a unique case study to investigate the effect of source control measures on the reduction in air pollution, and associated inhalation cancer risk, in a Chinese megacity. The authors measured 17 carcinogenic polycyclic aromatic hydrocarbons (PAHs) and estimated the lifetime excess inhalation cancer risk …
Increased arterial stiffness could represent an intermediate subclinical outcome in the mechanistic pathway underlying associations between average long-term pollution exposure and cardiovascular events. The authors hypothesized that 20 years of exposure to particulate matter (PM) ≤ 2.5 and 10 μm in aerodynamic diameter (PM2.5 and PM10, respectively) would be positively …
The relationship between traffic emissions and mobile-source air pollutant concentrations is highly variable over space and time and therefore difficult to model accurately, especially in urban settings with complex terrain. Regression-based approaches using continuous real-time mobile measurements may be able to characterize spatiotemporal variability in traffic-related pollutant concentrations but require …
The city of Dhaka was chosen for this assessment due to the current ongoing project Bangladesh Air Pollution Management (BAPMAN), which concentrates mostly on the capital city Dhaka. The Greenhouse Gas and Air Pollution Interactions and Synergies model (GAINS) was used to performed this top-down assessment due to the models …
An ambient air pollution screening study was performed in Dhaka from 31 January – 15 February 2011. The main objective of the study was to gain an overview of the background concentrations and the spatial distribution of the air pollution in the Dhaka city area. Thorough ambient air quality data …
VEHICLES and fuels must be seen as a system and not in isolation. Even a clean fuel like CNG may emit high air pollutants if the vehicle engine technology is inefficient to burn the fuel. This is the message from the first detailed testing of CNG three-wheelers in Delhi by …
Under the provisions of the Air (Prevention & Control of Pollution) Act, 1981, the CPCB has notified fourth version of National Ambient Air Quality Standards (NAAQS) in 2009. This revised national standard aims to provide uniform air quality for all, irrespective of land use pattern, across the country. There are …
A recent study by the Central Pollution Control Board has exonerated vehicles of being the worst polluters in Delhi and Mumbai. Instead, it has pinned down liquefied petroleum gas (LPG) as the biggest source of fine pollutants. Experts have contested the study, saying the findings are unsubstantiated and scientifically untenable. …
The Central Government has undertaken a study, i.e., ‘Air Quality Monitoring, Emission Inventory and Source Apportionment Study for (six) Indian Cities’, namely, Delhi, Kanpur, Pune, Mumbai, Chennai and Bengaluru with the help of premier institutions like, IIT-Bombay, IIT-Kanpur, IIT-Madras, NEERI-Nagpur, TERI-New Delhi and ARAI-Pune for identifying the various mobile and …
This is a critical analysis by CSE of the new six-city study on air pollution sources released by Central Pollution Control Board. Says that auto industry is misusing the study to derail tighter emissions standards and encourage polluting diesel cars. Centre for Science and Environment (CSE) has pressed the alarm …
NEW DELHI: Centre for Science and Environment (CSE) questioned the environment ministry's six-city study on air pollution on Tuesday, claiming it grossly underestimated automobile pollution. The Delhi-based NGO said the auto industry is taking advantage of this bias in the report, quoting it selectively to derive maximum mileage. The sector …
A government laboratory has produced unsubstantiated data blaming liquid petroleum gas (LPG) as a major source of air pollution, shifting the focus away from vehicular pollution, an environmental watchdog has said. The Centre for Science and Environment (CSE) has said the misleading data provides scope to sections of the oil …
In a number of cities in India, air pollution is a growing problem, not only limited to the megacities, but also spreading through the tier II and tier III cities. Given a diverse mix of sources in these cities, with megacities dominated with transport sector and the secondary cities with …
Based on its review of the air quality criteria and the national ambient air quality standards (NAAQS) for carbon monoxide (CO), EPA is proposing to retain the current standards. EPA is also proposing changes to the ambient air monitoring requirements for CO including those related to network design.
This new synthesis report provides outcome of the Air Quality Monitoring, Emission Inventory and Source Apportionment Study carried out in the cities of Bangalore, Chennai, Delhi, Kanpur, Mumbai and Pune. The primary focus of the study was on respirable particulate matter (PM10), although it also deals with other pollutants like …
This paper mainly deals with the measurement of air quality by observing the concentration of pollutants in the atmosphere namely suspended particulate matter, NOx and SO2 at five different selected locations in Lucknow city. The locations for the study have been chosen on the basis of land use pattern. Each …
Three key polutants, namely RSPM, SO2 and NO2 have been measured in schools in the National Capital Region (Delhi). Monitoring was conducted at all the 5 locations. Alarming levels of pollutants were reached on Diwali day, a festival of lights and for days preceding Diwali at all the locations.
Time to breath easy is over, air pollution is reaching critical levels again this winter. Centre for Science and Environment has reviewed the daily air quality data generated by the Central Pollution Control Board as well as the Delhi Pollution Control Committee and the public information system developed by the …
