Soil burdens of persistent organic pollutants--their levels, fate and risk. Part II. Are there any trends in PCDD/F levels in mountain soils?
Good quality data apt for an assessment of temporal trends of polychlorinated dibenzo-p-dioxins and furans (PCDDs/Fs) in soils are difficult to obtain since there is a general lack of information on their residues in soils. Variability of soil profiles, non-homogeneity of samples, and often also inconsistency of applied sampling procedures further complicate this problem. To assess spatial and temporal trends of contamination, three soil sampling campaigns have been performed over the period of 12 years at the mountain forest sites in the Czech Republic. Relation between the air, needle and soil contaminations was addressed in addition to time-related variability of soil. It has been confirmed that soil is a good matrix for evaluation of spatial distribution of persistent organic pollutants (POPs) but difficult for establishment of temporal trends. A slow rate of the soil-forming processes and their site-specificity was generally the major source of uncertainties.
Kukucka
Petr
P
Research Centre for Environmental Chemistry and Ecotoxicology RECETOX, Masaryk University, Kamenice 126/3, 625 00 Brno, Czech Republic.
Klánová
Jana
J
Sánka
Milan
M
Holoubek
Ivan
I
D000531:Altitude; D001572:Benzofurans / Q000032:analysis*; D018153:Czech Republic; D004784:Environmental Monitoring; D004787:Environmental Pollution; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis; D011108:Polymers / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*; D014197:Trees / Q000737:chemistry
D001572:Benzofurans; D000072317:Polychlorinated Dibenzodioxins; D011108:Polymers; D012989:Soil Pollutants; C016068:polychlorodibenzofuran