Report - DCE - Nationalt Center for Miljø og Energi

For the compounds Se, PCB, HCB, benzo(b)- and (k)-flouranthene, benzo(g,h,i)perylene
and indeno(1,2,3-c-d)pyrene, it has not been possible to
find any additional data to validate the emission factors. Only in the case of
PCB, Thomsen et al. (2009) provides an emission factor for PCB of 0.4 mg per
tonnes and assuming a body mass of 70 kg this gives an emission factor of 28
µg per body. The Japanese reference Eisaku TODA (2006) may be overestimated
due to differences in sources to the total exposure in Japan and in
Denmark and due to a higher technological development and use of air pollution
devices. Still, the Japanese emission factor was selected in the inventory
of this year as this data source represents refers to real measurements.
For the compounds As, Cd, Cr, Cu, Ni, benzo(a)pyrene and flouranthene,
the emission factors from US EPA 1996 were compared with data found in
the database provided by US EPA (WEBFIRE, 1992). The two data sources
present emission factors that differ significantly for these compounds. Since
no other data is available, the most resent estimated emission factor is chosen.
In addition to the two US data sources (WEBFIRE and US-EPA, 1996), emission
factors for Pb and Zn were found in a scientific paper by Santarsiero et
al. (2005) and, for Pb, also in a Swiss report Heldstab et al. (2008). These data
corresponds well with the emission factors of the WEBFIRE database, which
are therefore applied for Pb and Zn.
Since emission factors are country specific, Danish estimated data is selected
whenever available. Ten data sources were found providing emission factors
for CO, Hg and PCDD/F and amongst these were data from the Danish EPA
and the National Environmental Research Institute (NERI). The selected
Danish emission factors were verified by comparability to values provided
by the US database WEBFIRE and the Swiss report by Heldstab et al. (2008).
Five data sources to information and estimates of emission factors for SO2,
NOx and NMVOC showed very similar values. Since none of these data
sources are based on Danish estimates, the most common (US-EPA, 1996)
and (CANA, 1993) referenced by the EMEP/Corinair Guidebook 2007 are
selected.
There are also several data sources to the emission factor of TSP. The WEB-
FIRE database provides the one referred to in most of the scientific literature,
and was therefore selected for this inventory. The particulate matter fractions
of PM10 and PM2.5 are both calculated from TSP, as it is assumed that
PM10 and PM2.5 are 90 % of the total TSP (Fontelle et al., 2008).
&NJTTJPOT
Tables 7.5 show the total national emissions from selected years. To view the
entire time series 1980-2010, see Annex 2D-3. The dioxin emission is given in
I-TEQ; i.e. International Toxicity Equivalents which is a weighted addition of
congener toxicity with reference to 2,3,7,8-TCDD (Seveso-dioxin).