particle pollution is linked to adverse health effects ~350,000 premature deaths a year within the...
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![Page 1: Particle pollution is linked to adverse health effects ~350,000 premature deaths a year within the EU are related to exposure to particulate matter (PM)](https://reader038.vdocument.in/reader038/viewer/2022110322/56649d4b5503460f94a28303/html5/thumbnails/1.jpg)
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• Particle pollution is linked to adverse health effects
• ~350,000 premature deaths a year within the EU are related to exposure to particulate matter (PM) (WHO, 2006)
• Concentrations levelling off
• National air quality objectives exceeded
Sokhi (2007)
PM10 = Particles <10µm in diameter
EU Objective WHO Objective
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• Road transport is major source of atmospheric particles
• Accountable for 70% of the atmospheric particles in London
• Exhaust Emissions (Regulated)
• Non-Exhaust Emissions (Un-Regulated)
Road Surface WearTyre Wear Brake Wear Resuspended Dust
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•Non-exhaust source contributions to the total PM10
emissions can range from 30-90%
•The majority of available data is based on simulated driving tests
•Non-exhaust emission contributions are currently underestimated
•Lack of real world data to establish evidence-based policy.
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• Identify and quantify non-exhaust emissions within the urban atmosphere
• Improve non-exhaust emission calculations to assist with air quality assessments
• Provide a dataset for non-exhaust sources for use within emissions models
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Tunnel Sampling
• Methodology developed at UH• Two sampling stations at the entrance and inside the tunnel• Samples collected every 12 hours for 5 weeks • Two sampling campaigns
Equipment Used
•2 HiVols•2 Partisols•2 DSFUs• Weather St’n•Traffic Monitor
Traffic VolumeParticle
Concentrations
Wind Speed
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Tunnel Sampling
PM2.5
Concentrations
Organic Concentratio
ns
Mass Emission Factors
Source Emission Factors
PM10
Concentrations
Coarse
Concentrations
Metal Concentratio
ns
Chemical Analysis
Receptor Modelling
Traffic & Met Data
Traffic & Met Data
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•Second phase of the project will provide unique tracers to reduce uncertainties.
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• Development of methodology to measure non-exhaust emissions
• A unique and possibly the first UK dataset of this type for source apportionment of non-exhaust sources
• Users include Greater London Authority (GLA) and DEFRA
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•Educate the general public regarding air pollution
•Make people aware that emissions not only originate from exhaust pipes
•Create a Facebook group and produce a website, which will provide an information portal
•Promote environmental science in classrooms by visiting schools
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• NERC & BOC Foundation (Funding & Facilities)• Institution of Environmental Sciences• Prof. Sokhi, Dr. Mao, Dr. Luhana & Dr. Ravindra• Dr. Ian Bull and Dr. Emma Tomlinson• Sampling Assistants & Douglas Prain• Hatfield Tunnel Authorities & Highways Agency