Composição química da chuva e aporte atmosférico na Ilha Grande, RJ



Document title: Composição química da chuva e aporte atmosférico na Ilha Grande, RJ
Journal: Quimica nova
Database: PERIÓDICA
System number: 000313370
ISSN: 0100-4042
Authors: 1


2
Institutions: 1Universidade Federal Fluminense, Instituto de Quimica, Niteroi, Rio de Janeiro. Brasil
2Universidade do Estado do Rio de Janeiro, Instituto de Biologia Roberto Alcantara Gomes, Rio de Janeiro. Brasil
Year:
Season: Jun
Volumen: 29
Number: 3
Pages: 471-476
Country: Brasil
Language: Portugués
Document type: Artículo
Approach: Experimental, aplicado
English abstract Wet (n = 21) and dry (n = 23) deposition samples were collected from March to September 2002 at the southern coast of Ilha Grande. Rainwater pH varied from 4.3 to 6.3 and ionic concentrations (in µmol L-1) decreased in the order Cl- > Na+ > Mg2+ > SO42- > NO3- ~ NH4+ > K+ ~ H+ > Ca2+. Scavenging of sea-salt aerosols was the major source of Cl-, Na+, Mg2+, and Ca2+. Half of total SO42- was non-sea-salt SO42-. Total deposition fluxes of NH4+, NO3-, and non-sea-salt SO42- were respectively 9.3, 17.8, and 16.0 mol ha-1 month-1
Disciplines: Geociencias,
Química
Keyword: Química ambiental,
Agua de lluvia,
Composición química,
Depositación húmeda,
Depositación seca,
Contaminación del aire
Keyword: Earth sciences,
Chemistry,
Environmental chemistry,
Rainwater,
Chemical composition,
Wet deposition,
Dry deposition,
Air pollution
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