Suchergebnisse

In eleven chapters authored by expert air quality scientists and specialists from academia and city administrations, this book describes the problem of urban PM air pollution and combines the experiences of different European cities concerning the selection, implementation and evaluation of the effectiveness of specific measures to improve air quality

Airborne particulate matter - especially aerosols, its origin, its impact on our environment, and its properties - has been of great scientific and public concern for many years. In this volume experts discuss in depth all relevant issues of airborne particulate matter, including the characterisation of aerosols by modern physical and chemical methods

1 Introduction to Airborne Particulate Matter - Source, Chemistry and Health -- 2 Emission Sources of Particulate Matter -- 3 Geographic Distribution and Transport of Atmospheric Particulate Matter -- 4 Airborne particles in indoor and outdoor environments -- 5 High-resolution ambient record of aerosols over Delhi and associated typical health effects -- 6 Characterization of Primary and Secondary Airborne Particulate -- 7 Toxicological implications of fine particulates: sources, chemical composition and possible underlying mechanism -- 8 Bioaerosol and its impact on human health -- 9 Human Health Effects of Particulate Matter -- 10 Impacts and Responses of Particulate Matter Pollution on Vegetation -- 11 Mitigation and Management of Ambient Particulate Matter -- 12 Particulate Matter Regulatory Policies: National and Global Approach. .

The health problems caused by exposure to airborne Particulate Matter (PM) beyond safe limits have been studied for many years. Government regulatory agencies have adapted and updated the safe exposure limits as more progress is made both in policy developments and detection system design. Bulky PM detectors, though very accurate do not provide sufficient spatial and temporal resolution, and are static and expensive. Current much smaller commercial PM sensors are mobile but still mostly too expensive and largely still too big for real-time continuous personal use. They also must be calibrated to convert their counts to mass concentration despite their variation from unit to unit. The continuous drive towards having a cheaper, smaller, yet more effective PM sensors for personal exposure analysis and indoor environments is pushing the current boundaries of current techniques. Emerging PM sensing techniques must now achieve this, while also linking to other structured source apportionment and semantic analysis of air quality data aimed at providing useful information about user activities mostly provided via the internet. This review highlights research on PM detection and monitoring, covering methods and principle of operation of detection instruments, emerging trends and future outlooks. Further, this work reviews PM detection challenges, measurement interpretation and possible solutions going forward.

Particulate matter is the air pollutant that currently receives most attention from the atmospheric research community, the legislative authorities and the general public Limiting particulate matter in the atmosphere which will result in significant benefits for human health, with associated positive economic consequences Successful management of particulate matter requires scientific knowledge about particulate matter from cradle to grave covering sources of particles, processes that govern their formation composition, dispersion and fate in the atmosphere, as well as knowledge about human exposure and associated health and well being Such knowledge allows to design and perform effective and efficient abatement measures and monitoring This paper provides an introduction to the research and monitoring regarding particulate matter in Serbia The contributions were first partly presented at the 2nd international workshop of the WeBIOPATR Outdoor concentration size distribution and composition of respirable particles in WB urban area project in September 2009 This information provides context to the contributions in this number, and was part of the rationale of the project WeBIOPATR

AbstractTo date, diesel particulate matter (DPM) has been described as aggregates of spherule particles with a smooth appearing surface. We have used a new colour confocal microscope imaging method to study the 3D shape of diesel particulate matter (DPM); we observed that the particles can have sharp jagged appearing edges and consistent with these findings, 2D light microscopy demonstrated that DPM adheres to human lung epithelial cells. Importantly, the slide preparation and confocal microscopy method applied avoids possible alteration to the particles' surfaces and enables colour 3D visualisation of the particles. From twenty-one PM10 particles, the mean (standard deviation) major axis length was 5.6 (2.25) μm with corresponding values for the minor axis length of 3.8 (1.25) μm. These new findings may help explain why air pollution particulate matter (PM) has the ability to infiltrate human airway cells, potentially leading to respiratory tract, cardiovascular and neurological disease.