Airborne fluoride contamination of soils and olive trees near an aluminum plant. Measurements and simulations

Abstract

Data from a multimedia survey on fluoride contamination in the vicinity of an aluminum plant are presented and applied along with multimedia-based simulation modeling techniques in order to investigate the long term response of fluoride in soils and seasonal trends of accumulation by olive trees. Results from the modeling analysis are in fair agreement with observed data. Soils show elevated fluoride concentrations that decrease with distance from the source and depth below the surface. Fluoride is largely retained in the upper 5 cm of soil. Sensitivity analyses showed that accumulation of fluoride is dominated by atmospheric loading. The strong retention of fluoride in the calcareous soils of the area with high organic 1309

Air-vegetation-soil partitioning of toxic chemicals in environmental simulation modeling

“…N dry and N wet are the dry and wet deposition fluxes of particle-bound pollutant, respectively; they can be estimated using the following simple expressions (Tsiros and Ambrose, 1997;Tsiros et al, 1998b).…”

“…On the other hand, other more simple models may be restrictive to support exposure assessments. Recent modeling efforts include the work of Trapp and Matthies (1995), Tsiros and Ambrose (1997), Hung and Mackay (1997), Tsiros et al (1998b), etc.…”

Emisión de compuestos de flúor durante la cocción de baldosas cerámicas

“…Los efectos del flúor son reconocibles en diferentes taxones y han sido recogidos en numerosos trabajos científicos. Algunos de los taxones estudiados contemplan: líquenes, briofitas, peteridofitas, gimnospermas, angiospermas (monocotiledóneas y dicotiledóneas), así como olivos (Tsiros et al, 1998).…”