engleski

Fluoride Mass Concentrations in the Air at Different Distances from an Aluminum Factory

During two years before the agression on our country, mean daily mass concentrations of gaseous fluorides, mean weekly concentrations of particulate fluorides and monthly levels of fluoride mass concentrations in deposited matter were continously monitored at five measuring stations located at different distances from the source of fluoride emission. Mean annual concentrations of gaseous fluorides ranged from 0.34 to 2.55 mcg/m3, those of particulate fluorides from 0.32 to 1.2 mcg/m3 and mean monthly concentrations of fluorides in deposited matter ranged from 1.0 to 9.5 mcg/m2/day. The levels of fluoride mass concentration varied with the distance from the source, the intensity of emission and meteorological conditions.

gaseous and particulate fluorides; deposition

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