Soils are the main reservoirs of POPs in mountain ecosystems, but the great variability of the concentrations, also at small scale, leaves some uncertainties in the evaluation of environmental burdens and exposure. The role of the aspect of the mountain side and the seasonal variation in the contamination levels was analysed by means of several soil samples taken from central Italian Alps. A greater contamination content was present in northern soils with a mean ratio between the north vs. south normalised concentration of around a factor of 2 (North–South Enrichment Factor). Experimental factors agreed with theoretical calculations based on temperature-specific calculated Ksa values. From May to November consistent differences in normalised concentrations up to 5-fold were observed. A dynamic picture of the POP contamination in high altitudinal soils is derived from the data in this work, with spring-summer half-lives between 60 and 120 days for most of the compounds.

Tremolada, P., Parolini, M., Binelli, A., Ballabio, C., Comolli, R., Provini, A. (2009). Preferential retention of POPs on the northern aspect of mountains. ENVIRONMENTAL POLLUTION, 157(12), 3298-3307 [10.1016/j.envpol.2009.05.041].

Preferential retention of POPs on the northern aspect of mountains

BALLABIO, CRISTIANO;COMOLLI, ROBERTO;
2009

Abstract

Soils are the main reservoirs of POPs in mountain ecosystems, but the great variability of the concentrations, also at small scale, leaves some uncertainties in the evaluation of environmental burdens and exposure. The role of the aspect of the mountain side and the seasonal variation in the contamination levels was analysed by means of several soil samples taken from central Italian Alps. A greater contamination content was present in northern soils with a mean ratio between the north vs. south normalised concentration of around a factor of 2 (North–South Enrichment Factor). Experimental factors agreed with theoretical calculations based on temperature-specific calculated Ksa values. From May to November consistent differences in normalised concentrations up to 5-fold were observed. A dynamic picture of the POP contamination in high altitudinal soils is derived from the data in this work, with spring-summer half-lives between 60 and 120 days for most of the compounds.
Articolo in rivista - Articolo scientifico
POP distribution, Contamination in mountain, Aspect effect, Seasonal variation, Summer volatilisation
English
3298
3307
Tremolada, P., Parolini, M., Binelli, A., Ballabio, C., Comolli, R., Provini, A. (2009). Preferential retention of POPs on the northern aspect of mountains. ENVIRONMENTAL POLLUTION, 157(12), 3298-3307 [10.1016/j.envpol.2009.05.041].
Tremolada, P; Parolini, M; Binelli, A; Ballabio, C; Comolli, R; Provini, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/6054
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