Journal
ENVIRONMENTAL POLLUTION
Volume 129, Issue 1, Pages 63-68Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2003.09.026
Keywords
Itatiaia massif; Itatiaia National Park; rainwater; precipitation chemistry; wet deposition; acid rain
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Wet deposition and related rainwater chemistry were studied at the Itatiaia massif, on which is settled the Itatiaia National Park (INP). Samples were simultaneously collected on a weekly basis over 12 months, using automated wet and dry samplers, at the INP-Headquarters (INP-Hq; altitude-820 m) and the Itatiaia Plateau (It-Pt; altitude=2460 m). Conductivity, pH, Na+, K+, Mg2+, Ca2+, NH4+, Cl-, NO3- and SO42- were determined in 36 rainwater samples. Volume-weighted mean (VWM) pH was lower at the INP-Hq (4.9) than at the It-Pt (5.3). Very strong correlation between Cl- and Na+ was found for the INP-Hq (r = 0.99). At the Itatiaia massif, SO42-, NO3-, and NH4+ comprised together about 60% of the total inorganic ions and appear to exert the major control on rainwater pH. (C) 2003 Elsevier Ltd. All rights reserved.
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