engleski

Airborne fluoride contamination of soil and vegetation

The damaging effects of low concentrations of airborne fluorides are related to their uptake and accumulation, mainly in plant leaves. The uptake depends on the concentration and composition of fluoride in ambient air and the duration of exposure, on vegetation structure, plant species and growth conditions. This paper describes the accumulation of fluoride in Scots pines (Pinus sylvestris), olive trees and soil located near an aluminium plant, which was destroyed during the aggression on Croatia in 1991. Samples were collected from seven sites - including one reference site in an unpolluted area - in spring and autumn over six-years (1996-2001). Fluoride levels ranged from 0.63 to 80.66 µ ; g F-/g dw in soil, from 2.14 to 31.10µ ; g F-/g dw in Scots pines, and from 1.50 to 14.10µ ; g F-/g dw in olive trees. Statistical analysis showed that there were no significant differences in the fluoride content between spring and autumn.

airborne fluoride; phytotoxic air pollutants; soil contamination

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