Report - DCE - Nationalt Center for Miljø og Energi

sion. Simple mass balances for calculating the use and emissions of chemicals
are set up 1) use = production + import – export, 2) emission = use emission
factor. Production, import and export figures are extracted from Statistics
Denmark, from which a list of more than 400 single chemicals, a few groups
and products is generated. For each of these, a “use” amount in tonnes per
year (from 1990 to 2010) is calculated. For some chemicals and/or products,
e.g. propellants used in aerosol cans and ethanol used in windscreen washing
agents, use amounts are obtained from the industry as the information
from Statistics Denmark does not comply with required specificity. It is
found that approx. 40 different NMVOCs comprise over 95 % of the total use
and it is these 40 chemicals that are investigated further. The “use” amounts
are distributed across industrial activities according to the Nordic SPIN
(Substances in Preparations in Nordic Countries) database, where information
on industrial use categories is available in a NACE coding system. The
chemicals are also related to specific products according to the Use Category
(UCN) system. Emission factors are obtained from regulators, literature or
the industry.
The same method is used for calculating emissions from the use of fireworks,
tobacco and charcoal for barbeques (BBQ). These activities lead to emissions
of SO2, NOx, CO, NH3, particles, As, Cd, Cr, Cu, Hg, Ni, Pb, Se, Zn, dioxins/furans
and PAHs. N2O activity data are obtained from companies producing
and selling N2O for use primarily in anaesthesia.
Outputs from the inventory are: a list where the approx. 40 most predominant
NMVOCs are ranked according to emissions to air, specification of
emissions from industrial sectors and from households, contribution from
each chemical to emissions from industrial sectors and households. Furthermore,
trends in NMVOC emissions expressed as total NMVOC and single
chemical and specified in industrial sectors and households are shown.
The historic NMVOC emissions for the period 1990-1994 are introduced in
this reporting corresponding to the described method. Previously this period
was inventoried as an extrapolation of historic 1995-present data.
Please refer to Chapter 5 and Annex 5E for further information on the emission
inventory for solvents.
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The emission from agricultural activities covers ammonia emission from
manure management and agricultural soils and PM emission from animal
production. Furthermore, the inventory includes emission from field burning
of straw which covers NH3, PM, NOx, CO, NMVOC, SO2, heavy metals, dioxin
and PAH.
Emissions from agricultural activities are estimated according to the methodology
described in the EMEP/EEA air pollutant emission inventory
guidebook (EMEP/EEA, 2009). Activity data and national data regarding
emission factors are collected, evaluated and discussed in cooperation with
Statistics Denmark, DCA-Danish Centre for Food and Agriculture (Aarhus
university), the Danish Agricultural Advisory Service, Danish Environmental
Protection Agency and the Danish Plant Directorate. It means that
data are evaluated continuously according to the latest knowledge and information.