pm2.5 impact Articles

  • PM2.5 Air Quality Modeling Updates

    There has been much activity over the past six (6) months that will impact how air quality modeling analyses will be conducted for Prevention of Significant Deterioration (PSD) permit applications with respect to particulate matter less than 2.5 microns (PM2.5).  As the resident air quality modeling expert at ALL4, I thought it ...


    By All4 Inc.

  • EPA shifts PM2.5 PSD permitting policies

    On August 12, 2009, EPA created a significant stir in the regulated community when it issued an order that signals a significant shift in how the agency intends particulate matter with a diameter less than 2.5 micrometers (PM2.5) emissions to be regulated under the Prevention of Significant Deterioration (PSD) program. The order specifically applied to petitions filed by environmental groups ...


    By Trinity Consultants

  • Performance characterization of the MiniVol PM2.5 Sampler case study

    Measurements were conducted to assess the MiniVol PM2.5 sampler performance for various particle preseparator configurations including flat and cup impaction stages. Laboratory measurements were conducted to determine the impactor collection efficiency as a function of paricle size. Impactor cut points - the aerodynamic particle diameter exhibiting 50% collection efficiency - were 2.5 um (+- 10%) ...


    By Airmetrics

  • Traffic emission effects on ambient air pollution by PM2.5–related PAH in Upper Silesia, Poland

    The ambient concentration of particle–bound polycyclic aromatic hydrocarbons (PAHs) was investigated in two industrial towns in Upper Silesia, Poland. The 24 h samples of PM2.5 (particles with aerodynamic diameter ≤ 2.5 µm) were collected simultaneously at busy roads (or crossroads) and at an urban background site. Additionally, the samples were collected during the heaviest traffic density (rush ...


    By Inderscience Publishers

  • Implications for UK coal-fired power stations of a move to a particulate matter standard based on PM2.5

    The contribution of UK coal-fired power stations to ambient PM2.5 concentrations has been assessed using short- and long-range modelling. The results suggested a minimal contribution from power stations to both local and regional concentrations of PM2.5 relative to the standards in the proposed European ...


    By Inderscience Publishers

  • Energy efficiency and emission reduction of TPM, PM2.5, and SO2 from natural gas and fuel oil fired boiler exhausts

    Fully 8% of all of Canada’s energy consumption occurs in gas and fuel oil fired boilers in commercial and institutional facilities1, with proportional amounts of greenhouse gases, particulate matter, and other pollutants. Recently particulate matter, and in particular that smaller than 2.5 microns (PM2.5) has garnered specific attention due to attributed health effects as demonstrated by ...

  • Including ecotoxic impacts on warm‐blooded predators in life cycle impact assessment

    In current life cycle impact assessment, the focus of ecotoxicity is on cold‐blooded species. We developed a method to calculate characterization factors (CFs) for the impact assessment of chemical emissions on warm‐blooded predators in freshwater food chains. The method was applied to 329 organic chemicals. The CF for these predators was defined as a multiplication of the fate factor (FF), ...


    By John Wiley & Sons, Ltd.

  • The impact of privatisation on the sustainability of water resources

    More than two and a half millennia ago, the Greek philosopher Thales of Miletus said  “best of everything is water” (Biswas, 2005; p.229). Indeed, water still remains the source of life although the world has changed dramatically. Water is the most important natural resource on our planet Earth. It is the basis of life that all organisms depend on for survival. ...


    By IWA Publishing

  • Impact of pH on Derivatization of Nitrophenol Compounds

    Our goal of evaluating the Normalized French Environmental Method 12673 required testing the method’s ability to derivatize nitrophenols and alkylphenols in addition to the chlorophenols the method was designed for. Unfortunately, nitrophenols proved challenging to derivatize at low concentrations. In an effort to improve the derivatization of nitrophenols, we experimented with the pH of ...


    By Restek Corporation

  • Global environmental impacts of the hydrogen economy

    Hydrogen-based energy systems appear to be an attractive proposition in providing a future replacement for the current fossil-fuel based energy systems. Hydrogen is an important, though little studied, trace component of the atmosphere. It is present at the mixing ratio of about 510 ppb currently and has important man-made and natural sources. Because hydrogen reacts with tropospheric hydroxyl ...


    By Inderscience Publishers

  • Differential impacts of smoke-free laws on indoor air quality

    The authors assessed the impacts of two different smoke-free laws on indoor air quality. They compared the indoor air quality of 10 hospitality venues in Lexington and Louisville, Kentucky, before and after the smoke-free laws went into effect. Real-time measurements of particulate matter with aerodynamic diameter of 2.5 µm or smaller (PM2.5) were made. One Lexington establishment was excluded ...

  • Impact of inverter on losses and thermal characteristics of induction motors

    This paper investigated the losses and thermal characteristics of induction motors operated from pulse width-modulated (PWM) voltage supply in comparison to that operated from sinusoidal voltage supply. It was concluded that due to the abundant harmonics in the PWM waveforms, significant losses are induced in the motor by the inverter supply. The temperature ascends correspondingly. Switching ...


    By Inderscience Publishers

  • Sea-level rise and its impact on Florida

    It is well-established that global warming has resulted in global sea-level rise. Since 1870, average global sea level has risen by about 8 inches. As the climate has become increasingly warmer, the annual rate of sea-level rise has accelerated. Average annual sea-level rise between 1993 and 2011 was 78 percent higher than between 1961 and 1993. Four county governments in Southeast Florida, in ...

  • Ultrasonic impact on bacterial population in sewage sample

    Nine samples of sewage sludge from different paper mills of New Delhi were treated with ultrasonic waves of two different frequencies, viz., 35 kHz and 130 kHz for different time periods (5, 10, 20 and 30 min). Treated sewage sludge was then evaluated with different parameters, viz., Chemical Oxygen Demand(COD), Biochemical Oxygen Demand (BOD), Total Nitrogen, Total Phosphorus, Total Ammonia and ...


    By Inderscience Publishers

  • Impact of withering process on sensory properties of black tea

    Withering is the first step in tea processing and has a significant impact on final product quality. During the tea green leaf withering and its preparation for the next stage of processing (curling), reduction in moisture content of the leaf is accompanied by occurrence of biochemical interactions that play an important role in product quality; its aroma in particular. Air flow rate and ...

  • Impact of cleaning regimes on dental water unit contamination

    Microorganisms that have been identified in dental unit waterlines (DUWLs) are of concern because they can cause infections, especially in immunocompromised patients. This study aimed to assess the incidence of microbial contamination in DUWLs before and after intervention to reduce contamination, and to investigate the presence of coliforms, Escherichia coli and Pseudomonas ...


    By IWA Publishing

  • Modelling the hydrological impacts of rural land use change

    The potential role of rural land use in mitigating flood risk and protecting water supplies continues to be of great interest to regulators and planners. The ability of hydrologists to quantify the impact of rural land use change on the water cycle is however limited and we are not able to provide consistently reliable evidence to support planning and policy decisions. This shortcoming stems ...


    By IWA Publishing

  • Potential health impacts of consuming desalinated bottled water

    This study compared physicochemical properties, anion and carbon content and major and trace elements in desalinated and non-desalinated bottled water available in Qatar, and assessed the potential health risks associated with prolonged consumption of desalinated water. Results indicate that Qatar's population is not at elevated risk of dietary exposure to As (mean = 666 ng/L), Ba ...


    By IWA Publishing

  • Construction and Demolition Waste Management Practices and their Economic Impacts

    The European Commission has funded a report called 'Construction and demolition waste management practices and their economic impacts'. The project was undertaken by SYMONDS GROUP (United Kingdom) in association with ARGUS (Germany), COWI Consulting Engineers and Planners (Denmark) and PRC Bouwcentrum (the Netherlands). Basic aim of the project was to investigate the quantities of construction ...

  • Environmental Impact Assessment Review - Check List

    Untitled Document Objectives of the Review Checklist This Review Checklist has been developed as a method for reviewing environmental ...

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you