English Abstract This report describes the results of immission
measurements for PCDD/F in a rural area in the North East of the Netherlands
(Drenthe). Results of these measurements show that the average background
concentration of polychlorodibenzo-p-dioxins (PCDDs) and furans (PCDFs) in
ambient air were about 30 +- 15 fg TEQ/m3. This value is higher than the
predicted concentration of 10-20 fg TEQ/m3 based on the results of the
dispersion and deposition model (OPS-model). In addition, also
tetra-and-pent- congenerprofiles and congener patterns are studied and
compared with emissions patterns.
