fine particulate Articles
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Air pollution at street level in European cities
Traffic-related air pollution is still one of the most pressing problems in urban areas. Evidence of the adverse health effects of fine particulate matter is continuously emerging and it is alarming that most of the traffic-related emissions are in the fine particulates range (< PM2.5). Human exposure to increased pollutant concentrations in densely populated urban areas is high. The improvement ...
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Review of recent advances in detection of organic markers in fine particulate matter and their use for source
ABSTRACTFine particulate matter is believed to be more toxic than coarse particles and to exacerbate health problems such asrespiratory and cardiopulmonary diseases. Specific organic compounds within atmospheric fine particulate material can be used to differentiate specific inputs from various emissions and thus is helpful in identifying the major urban air pollution sources that contribute to ...
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PM10 and PM2.5 - legislation, measurement and control
New standards for PM10 and PM2.5 in ambient air are being formulated in Europe and the USA. There is much controversy over this legislation, not only with respect to the stringent limits proposed, but also due to the many problems associated with ensuring compliance with standards for a pollutant which is so poorly understood. New sampling and analysis techniques are being developed to improve ...
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Metallic elements in particulates released during incense-burning at Tzu Yun Yen temple, Taichung, Taiwan
Concentrations of ambient suspended particulates were measured at Tzu Yun Yen temple (120°, 34´ 10”E; 24°, 16´, 12”N), using a Universal sampler and dry deposition plates. The temple is a characteristic incense-burning and semi-open sampling site. PM2.5 concentrations for Period 1 (average 901µg/m³) were higher than those for Period 2 (average 701µg/m³). Results for average ...
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A quantitative approach to the traffic air quality problem: the traffic air quality index
The Traffic Air Quality (TAQ) model is a simple tool to estimate traffic fine particulate emissions on roadways (g/km) and can be used for both real-time analysis and for localized conformity analysis (“hot-spot” analysis for nonattainment areas) as defined by 40 CFR 93.123. This paper is a follow-up to a study published earlier regarding the development of the TAQ model. This paper shows how ...
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Characteristics of PM2.5 in rural areas of southern Jiangsu Province, China
To understand pollution level and possible sources ofatmospheric fine particulates in rural areas of southern Jiangsu Province of China, samples of PM2.5 were collected and analyzed in Xueyan Town and Taihu Lake Station over three seasons from July 2002 to January 2003. The mass concentrations of PM2.5 and 14 principal component elements were obtained. The results showed that pollution of PM2.5 ...
By IOS Press
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20` Titanium Butterfly Valves - Case Study
A SlurryFlo client near South Africa had been utilizing Titanium butterfly valves to vent steam from their flash vessels. Due to the vapour also containing acids and fine particulates, the butterfly valves were quickly compromised and removed from service after 1 month. If the erosion damage was determined unrepairable (see Fig 1), a new butterfly valve was installed in its ...
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A Method of Assessing Air Toxics Concentrations in Urban Areas Using Mobile Platform Measurements
ABSTRACTThe objective of this paper is to demonstrate an approach to characterize the spatial variability in ambient air concentrations using mobile platform measurements. This approach may be useful for air toxics assessments in Environmental Justice applications, epidemiological studies, and environmental health risk assessments. In this study, we developed and applied a method to characterize ...
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Monitoring of Terpene Emissions from Pine Trees by Auto-TDGCs
It has been established that organic aerosols (OA) makes up a major fraction of fine particulate matter in all region of the atmosphere. This fraction accounts approximately for half of the total PM2.5 dry mass. Primary OA is directly emitted in the trophosphere from anthropological and natural sources whereas secondary OA (SOA) is formed in-situ in the atmosphere from the oxidation of biogenic ...
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Solar AQMS - World`s 1st solar powered AQMS station - Case Study
Well known for its pioneering role with regards to sustainable innovation, ENVEA is the first manufacturer in the world offering tropical climate class air pollution monitors. Furthermore, as they can be 24V power supplied and significantly reduced energy use, the e-Series monitors have made possible the building of a complete solar powered AQMS station. Installed since June in ...
By ENVEA
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`Major Stationary Sources - What’s New, What’s Changing and What to Do About It,` presented at the 2006 PA Chamber Annual Environmental Laws and Regulations conference
Clean Air Mercury Rule(CAMR) Session Objectives Background on CAMR Rule NSPS & Cap-and-Trade Program Monitoring and Controlling HgEmissions Pennsylvania’s Proposed Hg Rule Clean Air Rules Clean Air Nonroad Diesel Rule Clean Air Ozone Rules 8-hour ozone Clean Air Fine Particulate Rules 8-hour PM2.5 Clean Air Interstate Rule (CAIR) Market-Based, Cap ...
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Finding Air Pollution Solutions by Tracking Particulates and Gases
An estimated 95% of people live in areas where outdoor fine particulate concentrations exceed the air quality guideline of 10 µg/m3 set by the World Health Organization. Almost 60% of people live in areas where fine particulate matter exceeds even the least stringent WHO interim air quality target of 35 µg/m3. These figures are presented in the State of Global Air 2018 project, and ...
By OPSIS AB
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Thermal Desorption-GC/MS Analysis of polycyclic aromatic hydrocarbons on fine particulates in air
Polycyclic aromatic hydrocarbons (PAHs) are commonly found throughout the environment in soil, water and adsorbed to fine particulate matter in air. Of the 16 common PAHs, 7 have been classified as animal carcinogens by the International Agency for Research on Cancer (IARC). Resulting from this classification, PAHs are monitored and regulated in the environment. Analysis of PAHs in soil and water ...
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Health Effects of Fine Particulate Air Pollution: Lines that Connect
Efforts to understand and mitigate the health effects of particulate matter (PM) air pollution have a rich and interesting history. This review focuses on six substantial lines of research that have been pursued since 1997 that have helped elucidate our understanding about the effects of PM on human health. There has been substantial progress in the evaluation of PM health effects at ...
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Plantwide Applicability Limits (PALs): A Legitimate Alternative to Major New Source Review Permitting
Plantwide Applicability Limits: A Legitimate Alternative to Major New Source Review Permitting. There have been a number of recent developments regarding U.S. EPA"s interpretation of the major New Source Review (NSR) air permitting rules that are related to the NSR Reform provisions of December 2002. When these new interpretations are considered in combination with the promulgation of new, more ...
By All4 Inc.
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The study of temple and pastureland particle-bound polycyclic aromatic hydrocarbons concentrations in central Taiwan
The concentrations of polycyclic aromatic hydrocarbons in the atmosphere were measured simultaneously at Tzu Yun Yen temple and Tung Hai University pastureland in Taichung, central Taiwan. At both sites, 24 h samplings were performed between August 2001 and December 2001. The results indicated that high molecular mass polycyclic aromatic hydrocarbons are predominant at the Tzu Yun Yen temple ...
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On the ionization of air for removal of noxious effluvia” (Air ionization of indoor environments for control of volatile and particulate contaminants with nonthermal plasmas generated by dielectric-barrier discharge)
Abstract Recent developments in the application of controllable air ionization processes that apply dielectric-barrier discharge devices to generate nonthermal plasmas have led to applications for chemical and biological decontamination in indoor air environments. These include significant reductions in airborne microbials, neutralization of odors, and reductions of specific volatile organic ...
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Short-term variations in ambient particulates and their sources in Taichung, Taiwan
Ambient particulate measurements were carried out using TE-PUF sampling and a Universal Air Sampler between 8 March and 25 April 2001 at Taichung. Samples were collected every 6 hours beginning at 0100 LST (Local Standard Time) each day at two sites, one at a university campus and the other at a roadside. Chemical species (Cl-, NO3-, SO42-, Na+, NH4+, K+, Mg2+, Ca2+, Fe, Zn, Pb, Ni) were analysed ...
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Fine Particulate Series (Part 3): PM2.5 prevention of significant deterioration (i.e., Attainment) – What you need to know
U.S. EPA’s final rules (and policies) governing the implementation of the New Source Review (NSR) program for fine particulate matter (i.e., particulate matter with an aerodynamic diameter less than 2.5 microns, or PM2.5) are now being implemented. In the March 2009 issue of 4 The Record, ALL4’s PM2.5 Team discussed the technical basics of PM2.5. Then, in the April 2009 issue, ...
By All4 Inc.
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Fine Particulate Series: PM2.5 nonattainment — What you need to know
In the March 2009 4 The Record article “A Practical Guide to PM2.5,” ALL4’s PM2.5 Team discussed the technical basics of PM2.5 and the specific steps that you can take to assess your position with regard to the challenging regulatory landscape that lies ahead. This month’s article aims to fill in a few technical details regarding PM2.5 nonattainment areas, including a ...
By All4 Inc.
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