Abstract：
:Fluoride concentrations in water, sediments, and plants were determined at 26 locations along five rivers in the French Alps where aluminum factories have been discharging fluoride into the surrounding environment since the end of the last century. Despite a wide range of biological and constructional damages caused by fluoride contamination in the past, there was no alarming level of fluoride found in the water, sediments, or plants. Fluoride concentration in water ranged from 0.11 ppm (considered to be natural background level) to 0.62 ppm (moderate contamination). The highest fluoride concentration was 360 ppm in sediments and 207 ppm in plants. The increase of fluoride concentration along the rivers was gradual from upstream to downstream. This gradual increase suggested that the fluoride pathway was from factory to stack, to air, to the entire valley, and to the river. The amount of fluoride transported from the Maurienne valley by the Arc river was estimated to be 680 tons per year. Of this 97.8% tons (665 tons) was transported by the flowing water and the rest (2.2% or 15 tons) by sediments moving downstream.
journal_name
Ecotoxicol Environ Safjournal_title
Ecotoxicology and environmental safetyauthors
Kudo A,Garrec JP,Plebin Rdoi
10.1016/0147-6513(87)90025-xsubject
Has Abstractpub_date
1987-06-01 00:00:00pages
263-73issue
3eissn
0147-6513issn
1090-2414pii
0147-6513(87)90025-Xjournal_volume
13pub_type
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