Persistent organic pollutant emissions
- In the EEA-33 countries, emissions of a number of compounds, categorised as persistent organic pollutants (POPs), decreased between 1990 and 2013. Emissions reductions were noted for hexachlorobenzene (HCB, by 96 %), polychlorinated biphenyls (PCBs, by 76 %), dioxins and furans (by 84 %), and poly-aromatic hydrocarbons (PAHs, by 62 %).
- While the majority of countries report that POPs emissions fell during this period, in some countries emissions increased.
- In 2013, the most significant sources of emissions for these POPs included the ‘Commercial, institutional and households’ (26 % of HCB, 40 % of dioxin and furan and 18% of PCB emissions) and ‘Industrial processes and product use’ (23 % of HCB and 46% of PCB) sectors.
What progress is being made in reducing emissions of persistent organic pollutants?
In the EEA-33 region, emissions of PAHs fell by 62 % between 1990 and 2013 (Figure 1). A combination of targeted legislation, the details of which are set out in the 'Indicator specification - policy context' section below, coupled with improved controls and abatement techniques have led to significant progress in most countries' attempts to reduce PAH emissions (Figure 5).
While the majority of individual countries have reported a decrease in PAH emissions since 1990, there are five countries (Denmark, Finland, Iceland, Italy and Malta) in which they have increased. Of these countries, emissions in Iceland and Malta have risen by more than 50 % since 1990. One reason for these increased emissions is the introduction of policy measures that have encouraged the burning of renewable materials (e.g. wood by Danish households). Wood burning produces emissions of PAHs, so in this instance, policies implemented to address one environmental issue (climate change) have had unintended consequences in terms of air pollution. In absolute terms, emissions of PAHs from both countries are relatively low compared to other countries, but the effect on local populations and environmental quality may nevertheless be significant. Of the EEA-33 countries, the highest PAH emissions were reported by Spain and Germany, where emissions are nearly five times greater than the average reported estimate.
Emissions of HCB have fallen sharply in the EEA-33 since 1990. This was mostly due to a drop in HCB emissions in the United Kingdom of 4.3 tonnes between 1998 and 1999 that accounted for 98 % of the total emissions reduction in the region in 1999 (Figure 2). This large decrease was due to the introduction of regulations in the UK to control the use of hexachloroethane (HCE) tablets as a degassing agent in secondary aluminium production. A total of 61 % of the reduction across all EEA-33 countries since 1990 can be attributed to the fall in HCB emissions in the United Kingdom, from 59 % of EEA-33 emissions in 1990, to just 12% in 2013.
Emissions of PCBs in the EEA-33 fell by 76 % between 1990 and 2013, due mainly to reductions in 'Industrial processes and product use' emissions, which accounted for 69 % of the decrease over this period (Figure 6). Within the EEA-33, the only countries in which PCB emissions rose above 1990 levels are Portugal and Spain (Figure 3). A total of 24 countries reported lower emissions in 2013 than 1990, and the remaining seven countries either did not report data, or reported zero emissions for 1990.
By 2013, reported emissions of dioxins and furans in the EEA-33 countries had decreased by 84 % compared with 1990 levels. Of the 31 countries that reported non-zero emissions, only Latvia and Malta reported an increase in emissions between 1990 and 2013 (Figure 4). The overall decrease in emissions across all EEA-33 countries was due significant reductions in 'Energy production and distribution' sector emissions (28 % of the overall decrease), 'Waste' (23 %) and 'Commercial, institutional and households' (22 %) (Figure 6). In 2013, 40 % of dioxin and furan emissions came from sources in the 'Commercial, institutional and households' sector, 18 % from 'Energy use in industry' and 18 % from 'Waste' (Figure 6).
How do different sectors and processes contribute to emissions of persistent organic pollutants?
Major sources of persistent organic pollutants (POPs) emissions typically include residential combustion processes (open fires, coal and wood burning for heating purposes etc.), industrial metal production processes and the road transport sector.
Commercial, institutional and households: In the EEA-33 countries, current emissions from ‘Commercial, Institutional and Household’ sources account for around two thirds of total PAH emissions and about 40 % of total dioxin and furan emissions. Household PAH emissions have declined since 1990 as a result of the decreased residential use of coal.
Industrial processes and product use: 'Industrial processes and product use' account for nearly half of all PCB emissions in the EEA-33, but current emissions from this sector have decreased by over 80 % since 1990. Reductions in POPs emissions in the same sector have occurred as a result of improvements in abatement technologies for metal refining and smelting.
Road transport: Road transport emissions do not make a particularly large contribution to total POPs emissions in the EEA-33. However, emissions have substantially reduced (-52 %) from 1990 levels due to stricter regulations on emissions from road vehicles.
Indicator specification and metadata
- This indicator tracks trends since 1990 in anthropogenic emissions of persistent organic pollutants (POPs). Emissions of polycyclic aromatic hydrocarbons (PAHs) are currently described, while other POP compounds will be added in the future.
- The indicator also provides information on emissions by sector: Energy production and distribution; Energy use in industry; Industrial processes; Road transport; Non-road transport; Commercial, institutional and households; Solvent and product use; Agriculture; Waste; Other.
- Geographical coverage: EEA-33. The EEA-33 country grouping includes countries of the EU-27 (Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and the United Kingdom), EFTA-4 (Iceland, Liechtenstein, Switzerland and Norway) and Turkey.
- Temporal coverage: 1990-2013.
Tonne (metric ton)
Policy context and targets
Targeted EC legislation (directives and regulations), coupled with improved control and abatement techniques, have led to strong progress by the EEA-33 countries in reducing air emissions of POPs, including the PAH group of chemicals. Such legislation includes:
- The 1998 UNECE Aarhus Protocol on POPs (to the 1979 Convention on Long-range Transboundary Air Pollution (LRTAP)). The ultimate objective of this protocal is to eliminate any discharges, emissions and losses of POPs. The original Protocol bans the production and use of some products outright (aldrin, chlordane, chlordecone, dieldrin, endrin, hexabromobiphenyl, mirex and toxaphene), with others scheduled for elimination at a later stage (DDT, heptachlor, hexaclorobenzene, PCBs). In 2009, the protocol was updated to list commercial Pentabromodiphenyl (Penta-BDE) and commercial Octabromodiphenyl (Octa-BDE) as POP substances, whilst the POPs task force concluded that hexabromocyclododecane (HBCD) met the criteria to be considered as a POP, and potential risk management options are therefore currently being considered for it. Finally, the protocol severely restricts the use of DDT, HCH (including lindane) and PCBs, and includes provisions for dealing with the wastes of products that will be banned. It also obliges parties to reduce their emissions of dioxins, furans, PAHs and HCB to below their 1990 levels (or an alternative year between 1985 and 1995). For the incineration of municipal, hazardous and medical waste, it lays down specific limit values.
- The 2001 UNEP Stockholm Convention on POPs aims to reduce and ultimately cease the manufacture, use, storage and emission of POPs, as well as to destroy existing stocks. It provides for measures to reduce or eliminate emissions resulting from intentional and unintentional production and use. It also plans to meet the obligations on technical and financial assistance to developing countries and countries with economies in transition, and to cooperate and exchange information. 12 POPs were covered under the original scope of the Convention:
- Pesticides: aldrin, chlordane, DDT, dieldrin, endrin, heptachlor, hexachlorobenzene, mirex, toxaphene;
- Industrial chemicals: hexachlorobenzene, polychlorinated biphenyls (PCBs); and
- By-products: hexachlorobenzene; polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/PCDF), and PCBs.
- In May 2009, nine additional chemicals were added to the Convention:
- Pesticides: chlordecone, alpha hexachlorocyclohexane, beta hexachlorocyclohexane, lindane, pentachlorobenzene;
- Industrial chemicals: hexabromobiphenyl, hexabromodiphenyl ether and heptabromodiphenyl ether, pentachlorobenzene, perfluorooctane sulfonic acid, its salts and perfluorooctane sulfonyl fluoride, tetrabromodiphenyl ether and pentabromodiphenyl ether; and
- By-products: alpha hexachlorocyclohexane, beta hexachlorocyclohexane and pentachlorobenzene
- EC Communication on a Community Strategy for Dioxins, Furans and PCBs (COM (2001) 593 final) – aims to assess current state of the environment and to reduce human exposure and long term environmental effects. The Communication does not propose legislative measures, but could be the basis for a Community action plan;
- The Directive on the Limitation of Emissions of Certain Pollutants into the Air from Large Combustion Plants (2001/80/EC) – has had the effect of reducing heavy metal and PAH emissions via dust control and absorption;
- Regulation (EC) No. 850/2004 on Persistent Organic Pollutants entered into force on the 20 May 2004. The main purpose of this Regulation is to enable the European Community to ratify the Stockholm Convention and the Aarhus Protocol. The Regulation also deals with stockpiles of redundant substances.
- Emissions of a number of heavy metals released from certain industrial facilities are also estimated and reported under the requirements of the European Pollutant Release and Transfer Register Regulation (E-PRTR) (166/2006/EC).
- EU Directive on Ambient Air Quality and Cleaner Air for Europe (2008/50/EC) addresses and the directive 2004/107/EC relating to heavy metals and polycyclic aromatic hydrocarbons in ambient air contain provisions, target and limit values for the further control of air pollutants in ambient air.
- There are also a number of specific EU environmental quality standards and emission standards for heavy metals and POPs for these substances in coastal and inland waters, drinking waters etc. These have only indirect relevance to air emissions as they do not directly specify emission or precipitation quality requirements, but rather specify the required quality of receiving waters. Such measures include Hexachlorocyclohexane (HCH) Discharges (84/491/EEC); Dangerous Substances Directives (76/464/EC) and (86/280/EC); Water Framework Directive (2000/60/EC).
As noted above, the POPs protocol to the UNECE LRTAP Convention obliges parties to reduce their emissions of dioxins, furans, PAHs and HCB below their 1990 levels (or an alternative year between 1985 and 1995 inclusive).
Related policy documents
COM(2001) 245 final. The Clean Air for Europe (CAFE).
The Clean Air for Europe (CAFE) Programme: Towards a Thematic Strategy for Air Quality COM(2001) 245 final
Directive 2001/80/EC, large combustion plants
Directive 2001/80/EC of the European Parliament and of the Council of 23 October 2001 on the limitation of emissions of certain pollutants into the air from large combustion plants
IPPC (newly recoded) Directive 2008/1/EC of the European Parliament and of the Council of 15 January 2008 concerning integrated pollution prevention and control. (see earlier code 96/61/EC)
Directive 2010/75/EC on industrial emissions (integrated pollution prevention and control)
The IED is the successor of the IPPC Directive and in essence, it is about minimising pollution from various industrial sources throughout the European Union. Operators of industrial installations operating activities covered by Annex I of the IED are required to obtain an integrated permit from the authorities in the EU countries. About 50.000 installations were covered by the IPPC Directive and the IED will cover some new activities which could mean the number of installations rising slightly.
UNECE Convention on Long-range Transboundary Air Pollution
UNECE Convention on Long-range Transboundary Air Pollution.
Methodology for indicator calculation
This indicator is based on officially reported national total and sectoral emissions to the EEA and UNECE/EMEP (United Nations Economic Commission for Europe/Co-operative programme for monitoring and evaluation of the long-range transmission of air pollutants in Europe) Convention on Long-range Transboundary Air Pollution (LRTAP Convention), submission 2015. For the EU-28 Member States, the data used is consistent with the emissions data reported by the EU in its annual submission to the LRTAP Convention.
Recommended methodologies for emission inventory estimation are compiled in the EMEP/EEA Air Pollutant Emission Inventory Guidebook, (EMEP/EEA, 2013). Base data is available from the EEA Data Service
(http://www.eea.europa.eu/data-and-maps/data/national-emissions-reported-to-the-convention-on-long-range-transboundary-air-pollution-lrtap-convention-9) and the EMEP web site (http://www.ceip.at/). Where necessary, gaps in reported data are filled by the European Topic Centre for Air and Climate Change using simple interpolation techniques (see below). The final gap-filled data used in this indicator is available from the EEA Data Service (http://www.eea.europa.eu/data-and-maps/data/data-viewers/air-emissions-viewer-lrtap).
Indicator specification and metadata
Base data, reported in the UNECE/EMEP Nomenclature for Reporting (NFR14) sector format, is aggregated into the following EEA sector codes to obtain a consistent reporting format across all countries and pollutants:
- Energy production and distribution: emissions from public heat and electricity generation, oil refining, production of solid fuels, extraction and distribution of solid fossil fuels and geothermal energy;
- Energy use in industry: emissions from combustion processes used in the manufacturing industry including boilers, gas turbines and stationary engines;
- Industrial processes: emissions derived from non-combustion related processes such as the production of minerals, chemicals and metal production;
- Road transport: light and heavy duty vehicles, passenger cars and motorcycles;
- Non-road transport: railways, domestic shipping, certain aircraft movements, and non-road mobile machinery used in agriculture and forestry;
- Commercial, institutional and households: emissions principally occurring from fuel combustion in the services and household sectors;
- Solvent and product use: non-combustion related emissions mainly in the services and households sectors including activities such as paint application, dry-cleaning and other use of solvents;
- Agriculture: manure management, fertiliser application, field-burning of agricultural wastes;
- Waste: incineration, waste-water management;
- Other: emissions included in national totals for the entire territory not allocated to any other sector
The following table shows the conversion of Nomenclature for Reporting (NFR) sector codes used for reporting by countries into EEA sector codes:
Methodology for gap filling
An improved gap filling methodology was implemented in 2010 that enables a complete time series trend for the main air pollutants (NOX, SOX, NMVOC, NH3 and CO) to be compiled. In cases where countries did not report emissions for any year, it meant that gap-filling could not be applied. For these pollutants, therefore, the aggregated data is not yet complete and is likely to underestimate true emissions. Further methodological details of the gap filling procedure are provided in section 1.4.2 Data gaps and gap-filling of the European Union emission inventory report 1990–2009 under the UNECE Convention on Long-range Transboundary Air Pollution (LRTAP).
- EEA (2011). European Union emission inventory report 1990 — 2009 under the UNECE Convention on Long-range Transboundary Air Pollution (LRTAP). EEA technical report No 9/2011. Copenhagen.
- EMEP/EEA (2013) EMEP/EEA air pollutant emission inventory guidebook - 2013. This 2013 update of the emission inventory guidebook prepared by the UNECE/EMEP Task Force on Emissions Inventories and Projections provides a comprehensive guide to state-of-the-art atmospheric emissions inventory methodology. Its intention is to support reporting under the UNECE Convention on Long-range Transboundary Air Pollution and the EU National Emission Ceilings Directive.
The use of gap filling in instances where countries have not reported emissions for one of more years can potentially lead to artificial trends, but it is considered unavoidable if a comprehensive and comparable set of emissions data for European countries is required for policy analysis purposes.
Data sets uncertainty
Uncertainties in the emission estimates of PAHs reported by countries are considered to be higher than for other more 'traditional' air pollutants such as NOX and SO2 due to the relatively higher uncertainties that exist in both activity data and emission factors for this group of pollutants. Emission estimates for the other POPs are also considered to be of high uncertainty.
This indicator is regularly updated by the EEA and is used in state of the environment assessments. The uncertainties related to methodology and data sets are therefore of importance. Any uncertainties involved in the calculation and in the data sets need to be accurately communicated in the assessment, to prevent erroneous messages influencing policy actions or processes.
National emissions reported to the Convention on Long-range Transboundary Air Pollution (LRTAP Convention)
provided by United Nations Economic Commission for Europe (UNECE)
Air pollution (Primary topic)
Typology: Performance indicator (Type B - Does it matter?)
- APE 006
Contacts and ownership
EEA Contact InfoAnke Luekewille
EEA Management Plan2015 1.1.2 (note: EEA internal system)
Frequency of updates
- 01 Jul 2015 - Persistent organic pollutant emissions
- 20 Dec 2013 - Persistent organic pollutant emissions
- 20 Dec 2012 - Persistent organic pollutant emissions
- 21 Dec 2011 - Persistent organic pollutant emissions
- 15 Oct 2010 - Persistent organic pollutant emissions
- 15 Feb 2010 - EEA32 Persistent organic pollutant (POP) emissions
For references, please go to www.eea.europa.eu/soer or scan the QR code.
This briefing is part of the EEA's report The European Environment - State and Outlook 2015. The EEA is an official agency of the EU, tasked with providing information on Europe's environment.
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