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- Real-time chemical analysis of individual particles using an aerosol time-of-flight mass spectrometer found solid fuel combustion particles accounted for over 75% of PM2.5 mass in Killarney and over 80% in Enniscorthy.
- The chemical signatures of different fuel types (peat, coal, wood
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ENVIRONMENTAL CONCERNS AND SUSTAINABLE DEVELOPMENT - WITH SPECIAL REFERENCE T...vijay kumar sarabu
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SOLID WASTE MANAGEMENT PROJECT at KALUTHARA(KALUTHARA URBAN COUNCIL)
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PM is a complex mixture of air borne particles that differ in size, origin and chemical composition, all of which are <10 µm in size.
US EPA described PM pollution as ‘mixture of mixtures’.
PM is among the most harmful of all air pollutants.
SOLID WASTE MANAGEMENT PROJECT at KALUTHARA(KALUTHARA URBAN COUNCIL)
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PM is a complex mixture of air borne particles that differ in size, origin and chemical composition, all of which are <10 µm in size.
US EPA described PM pollution as ‘mixture of mixtures’.
PM is among the most harmful of all air pollutants.
Air can be contaminated by a range of very different particles such as dust, pollen, soot, smoke, and liquid droplets. Many of them can harm our health, especially very small particles that can enter deep into the lungs.
What is known about the different health effects of particles?
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The behaviour of trace metals and the related characteristics of the formation of fine particles may have important implications for process options, gas cleaning, environmental risk and resultant cost in oxy-fuel combustion. Environmental and operational risk will be determined by a range of inter-related factors including:
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Capture efficiencies of the trace species in the various air pollution control devices used in the process; including gas and particulate control devices, and specialised systems for the removal of specific species such as mercury;
Gas quality required to avoid operational issues such as corrosion, and to enable sequestration in a variety of storage media without creating unacceptable environmental risks; the required quality for CO2 transport will be defined by (future and awaited) regulation but may be at the standards currently required of food or beverage grade CO2; and
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On 25 November 2020 the EPA published Ireland’s Environment - An Integrated Assessment 2020 which provides an assessment of the overall quality of Ireland's environment, the pressures being placed on it and the societal responses to current and emerging environmental issues.
This plain English fact sheet outlines the work done by the EPA in monitoring Ireland’s rivers.
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Biological monitoring has been carried out in Irish rivers since 1971. The current national river monitoring programme covers more than 13,000 km of river channel.
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This plain English fact sheet outlines the work done by the EPA in monitoring phytoplankton in Ireland's marine environment.
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This plain English fact sheet outlines the work done by the EPA in monitoring Ireland’s marine environment.
Ecologically healthy marine waters are a valuable natural resource. They support a rich and diverse range of ecosystems, habitats and species, and they are also a source of food – from wild fisheries and aquaculture. They are also important for recreational activities and tourism.
Transitional and coastal waters are assessed under the European Water Framework Directive (WFD) and the Marine Strategy Framework Directive (MSFD). Having coordinated frameworks for water quality for all the water bodies in Ireland, and across Europe, allows us to compare our results with other countries. It allows us to see what works to help us make sure all our water bodies achieve at least ‘good’ status, and no deterioration occurs.
This plain English fact sheet outlines the work done by the EPA in monitoring Ireland’s lakes.
A total of 225 lakes are currently included as part of the national surface waters monitoring programme run by the EPA, this covers around 80% of the surface area of all lakes in Ireland.
This includes:
• all lakes greater than 50 hectares
• lakes that are used for supplying drinking water
• lakes that are of regional, local or scientific interest
This Plain English fact sheet outlines the work done by the EPA in monitoring aquatic plants in Irish lakes.
Aquatic plants are good at showing if the quality of the water is good or bad and play an important role in lake ecology by providing food and a habitat for many smaller plants, animals and birds.
They also:
• provide shelter for young fish
• help to improve the clarity of the water
• help stabilise lake shore banks
• reduce the amount of sediment being suspended in the water
The Environmental Protection Agency (EPA) monitors these aquatic plants at more than 10,000 sites in over 200 lakes once every three years.
On 17 and 18 June 2020 the EPA held its National Water Event as an online conference.
This year's theme was 'Restoring our waters'.
This years event was free to attend. It was the EPA's largest water event ever, with over 1250 attending.
To everyone who joined us: thanks for attending; thanks for your probing questions; thanks for your passion; thanks for caring about our waters. We can achieve more working together.
Special thanks to all our presenters and the team who worked behind the scenes to make sure this years conference happened.
For science and stories about water quality in Ireland, check out www.catchments.ie
On 17 and 18 June 2020 the EPA held its National Water Event as an online conference.
This year's theme was 'Restoring our waters'.
This years event was free to attend. It was the EPA's largest water event ever, with over 1250 attending.
To everyone who joined us: thanks for attending; thanks for your probing questions; thanks for your passion; thanks for caring about our waters. We can achieve more working together.
Special thanks to all our presenters and the team who worked behind the scenes to make sure this years conference happened.
For science and stories about water quality in Ireland, check out www.catchments.ie
On 17 and 18 June 2020 the EPA held its National Water Event as an online conference.
This year's theme was 'Restoring our waters'.
This years event was free to attend. It was the EPA's largest water event ever, with over 1250 attending.
To everyone who joined us: thanks for attending; thanks for your probing questions; thanks for your passion; thanks for caring about our waters. We can achieve more working together.
Special thanks to all our presenters and the team who worked behind the scenes to make sure this years conference happened.
For science and stories about water quality in Ireland, check out www.catchments.ie
On 17 and 18 June 2020 the EPA held its National Water Event as an online conference.
This presentation was by Con McLaughlin, Donegal County Council and Andy Griggs, Armagh City, Banbridge and Craigavon District Council.
This year's theme was 'Restoring our waters'.
This years event was free to attend. It was the EPA's largest water event ever, with over 1250 attending.
To everyone who joined us: thanks for attending; thanks for your probing questions; thanks for your passion; thanks for caring about our waters. We can achieve more working together.
Special thanks to all our presenters and the team who worked behind the scenes to make sure this years conference happened.
For science and stories about water quality in Ireland, check out www.catchments.ie
On 17 and 18 June 2020 the EPA held its National Water Event as an online conference.
This year's theme was 'Restoring our waters'.
This years event was free to attend. It was the EPA's largest water event ever, with over 1250 attending.
To everyone who joined us: thanks for attending; thanks for your probing questions; thanks for your passion; thanks for caring about our waters. We can achieve more working together.
Special thanks to all our presenters and the team who worked behind the scenes to make sure this years conference happened.
For science and stories about water quality in Ireland, check out www.catchments.ie
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Urban and Rural Sources of Particulate Matter
1. Urban and Rural Sources of
Particulate Matter
John Wenger
Centre for Research into Atmospheric Chemistry
Environmental Research Institute
University College Cork
Ireland
Email: j.wenger@ucc.ie web: http://www.ucc.ie/en/crac/
2. Outline
• Properties of Particulate Matter (PM)
• Linking chemical composition and sources of PM
• Case Studies
- Cork City
- Killarney
• Summary and Perspectives
3. Particulate Matter
PM10 - Particulate Matter with diameter less than 10 microns
PM2.5 - Particulate Matter with diameter less than 2.5 microns
4. All Shapes and Sizes
• Large number of particles < 0.1 microns
• Majority of mass in range 0.1-10 microns
6. • Formation and growth of particles in the atmosphere
• Ammonium, sulfate, nitrate, secondary organic aerosol
Gas +
scavenging
Particle Particle
Particle Particle+
coagulation
Particle
Gas Gas+
nucleation
Particle
Gas
condensation
Particle
Secondary Sources
7. Fine fraction (PM2.5) Coarse fraction (PM2.5-PM10)
• Approximate composition of PM in Ireland determined
by off-line analysis of filter samples
Chemical Composition
Elemental and
Organic Carbon
Sulphate
Nitrate
Ammonium
Chloride
Insoluble minerals
Na, K, Mg, Ca
8. Chemical species Sources
Elemental/Black Carbon
(EC or BC)
Fuel combustion (automobiles,
industry, coal/wood burning)
Organic Carbon Fuel combustion, secondary organic
aerosols from VOC oxidation processes
Nitrate / Sulfate Gas-particle conversion of NO2 / SO2
produced from combustion processes
Ammonium Gas-particle conversion of NH3
produced from agriculture
Chloride Sea spray
Minerals (Oxides of Ca, Mg,
Si, Al, Fe)
Resuspension of dust/soil
Metals (K, V and Ni, Pb, Zn,
Cd, Hg etc.)
Industry, combustion, often specific
sources
Linking Composition and Sources of PM
9. Reducing PM levels
We need to know AND quantify the sources
• How much PM is from traffic?
• How much PM is from solid fuel burning?
• How much PM is from other sources?
• How do the emissions from these sources vary
during the day and by season?
Detailed measurements of the PM are required
• Size, concentration and chemical composition at a
HIGH-TIME resolution
• Source Apportionment Modelling
11. X
B
B
B
Tivoli Docks August 2008 and February 2009
Intensive Measurement Campaign
Healy et al., Atmospheric Chemistry and Physics 2010
12. Tivoli Docks August 2008 and February 2009
Intensive Measurement Campaign
A range of state-of-the-art instruments deployed
for On-line monitoring of particle mass, size,
number and chemical composition in real-time
13. Aerosol Time-of-Flight Mass Spectrometer
• Detects elemental
carbon, organic carbon,
metals, inorganic ions
in single particles
• Provides size-resolved
chemical composition
(0.1-3.0 micron)
• Operates in real-time
→ big advantage over
filter collection and off-
line analysis approach
14. Sea-Salt Particle Mass
Spectrum (Na and Cl are
markers of interest)
Biomass Burning Particle
Mass Spectrum (K is major
marker for biomass)
Single Particle Mass Spectra
15. Sources in Cork Harbour: 3 Vehicular Traffic
0
500
1000
1500
2000
2500
ATOFMScounts(h-1)
Time
Ca-traffic EC-traffic EC-phos
Sources in Cork Harbour: Vehicular Traffic
Healy et al., Atmospheric Chemistry and Physics 2010
17. • State-of-the-art analytical techniques used to apportion PM mass
Source Apportionment of PM
Healy et al., Atmospheric Chemistry and Physics, 2010
PM2.5
average
(µg/m3)
Solid Fuel
Burning
%
Traffic
%
Other
Local
Sources
%
Regional
Sources
%
August
2008
9.7 5 23 24 26
February
2009
16.2 50 19 21 10
Kourtchev et al., Science of the Total Environment, 2011
Dall’Osto et al., Atmospheric Chemistry and Physics, 2013
19. • What is the contribution of residential solid fuel burning
to PM levels in towns where the Ban on Bituminous Coal
is not in place?
The Burning Question
20. What is the contribution of each fuel type?
Sod Peat (Turf)
“Smokeless” Coal
Wood
Bituminous (Smoky) Coal
Peat Briquettes
21. Source Apportionment of Particulate Matter in
Urban and Rural Residential Areas of Ireland
(SAPPHIRE)
1 April 2014 – 31 March 2016
http://www.ucc.ie/en/crac/research/sapphire/
22. • Outside the Smoky Coal
Ban Area (pop. < 15,000)
• No natural gas supply
• High usage of solid fuels
(coal, peat/turf & wood)
Monitoring Locations
• Killarney, Co. Kerry (Nov & Dec 2014)
• Enniscorthy, Co. Wexford (Jan & Feb 2015)
K
E
23. • Site is located on the western side of the town, in the
grounds of the Community Hospital in a residential area
Monitoring Location: Killarney
24. • Site is located on the western side of the town, in the
grounds of the Community Hospital in a residential area
Monitoring Location: Killarney
27. Aerosol Time-of-Flight Mass Spectrometer
• Detects elemental
carbon, organic carbon,
metals, inorganic ions
in single particles
• Provides size-resolved
chemical composition
(0.1-3.0 micron)
• Operates in real-time
→ big advantage over
filter collection and off-
line analysis approach
28. PEAT
PEAT
WOOD
COAL
COAL
EC
Sulfate
Potassium
Assigned on the basis of combustion
experiments
COAL → EC & some potassium, sulfate
dominates negative spectra
PEAT → EC & OC fragments, some
potassium
WOOD → Potassium dominates
positive spectra
EC
OC
WOOD
Mass Spectra: Solid Fuel Combustion
29. SEA SALT
TRAFFIC
AMINE/
AMMONIUM
Na
Cl
NaCl2
Na2Cl3 Sea salt characteristics:
→ sodium & chloride peaks, no EC
Traffic characteristics:
→ calcium & phosphate (lubricating
oil), some EC
Phosphate
Calcium
Ammonium/amine characteristics:
→ ammonium, trimethylamine, OC,
large sulfate peak in negative spectra
Ammonium
Mass Spectra: Other Particle Types
31. Particles from solid fuel burning
80% of PM2.5
Particle Numbers
Particles from solid fuel burning
77% of PM2.5
Particle Mass
ATOFMS: Source Contribution to PM2.5
Mass
Scaling
32. • Local sources account for 70-90% of PM2.5 in Cork City.
Traffic accounts for ~20%; solid fuel burning 50% in winter.
• Residential solid fuel burning contributes 70-80% of PM2.5
in Killarney in winter
• Similar results for Enniscorthy: also likely replicated in tens
of small towns across Ireland.
• Peat, coal and wood all contribute: Extending the smoky
coal ban may not be enough to deliver improvements in
air quality
• No source apportionment study yet performed in Dublin!
Summary and Perspectives
39. Instrument Parameter(s) measured Temporal
resolution
Aerosol time-of-flight mass
spectrometer (TSI model 3800)
Single particle chemical
composition (100-3000 nm)
1 min
Scanning mobility particle sizer
(TSI model 3081)
Particle number concentration
(10-800 nm)
3 min
Optical Particle Sizer (TSI model
3330)
Particle number concentration
(300-10000 nm)
3 min
TEOM (Thermo Electron model RP
1400a)
PM2.5 mass concentration 30 min
Thermal-optical carbon analyser
(Sunset Inc. model 3rd generation)
Elemental and organic carbon
mass concentrations
2 hr
7-Wavelength Aethalometer
(Model AE33, Magee Scientific)
Black Carbon concentration 1 min
High volume sampler (Digitel
model DHA 80)
Collection of particulate
matter (PM2.5)
6 hr
Key Instrumentation
41. Low winds – Local sources High winds – Regional sources
Influence of Meteorology
• Low wind speed – local emissions dominate
• High wind speed – regional sources dominate
42. Enniscorthy: ATOFMS Mass: Diurnal
• Averaged ATOFMS mass
concentration per day
maximum = ~ 60 μg/m3
• Peak averaged daily mass
concentrations:
− peat (16 μg/m3)
− wood (14 μg/m3)
− coal (12 μg/m3)
− PAH-containing (9 μg/m3)
29/09/15
SAPPHIRE Meeting: ATOFMS (Jovanna
Arndt)
42
43. Enniscorthy: ATOFMS Mass Breakdown
29/09/15
SAPPHIRE Meeting: ATOFMS (Jovanna
Arndt)
43
Solid fuel combustion particles = 89% of
ATOFMS PM2.5 mass
(no comparison with TEOM yet so this % will
probably decrease a bit)
PAH-containing particles associated with all
three fuel types.