ISSN:
1573-2959
Keywords:
central India
;
dust samples
;
flow injection analysis
;
fluoride deposition
;
rain water
;
Zr(IV)-SPADNS complex
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
Notes:
Abstract Fluoride is a volatile element emitted from natural and anthropogenic sources into the atmoshere and scavenged from the atmosphere by rain water. We collected 444 rain water and 36 dust samples on an event basis at 13 sites and on the bulk basis (monthly) at 3 sites, respectively, in central India (extending over 17°N to 24°N latitude and 80° 17′ to 84°11′E longitude). The level of F- in the atmospheric samples was determined by automating the conventional Zr(IV)-SPADNS [Sodium 2- (parasulfophenylazo)-1, 8-dihydroxy-3, 6-naphthalene disulfonate] method in the presence of surfactant, i.e. TX–100 [Triton x- 100]. The detection limit of the method is 10.0 ppb F- with a sample throughput of 70 samples/h. The F- deposited with rain water (in 13 sites) and with dust (three sites) were ranged between 54.8 to 483.0, and 105.0 to 503.3 kg/km2/year, respectively. The level of F- in atmospheric samples, seasonal and spatial variation in deposition and sources of F- are discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1005987106200
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