Composition of rainwater in the central region of São Paulo City Composição iônica majoritária de águas de chuva no centro da cidade de São Paulo

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dc.contributor.authorLeal T.F.M.
dc.contributor.authorFontenele A.P.G.
dc.contributor.authorPedrotti J.J.
dc.contributor.authorFornaro A.
dc.date.accessioned2024-03-13T01:45:22Z
dc.date.available2024-03-13T01:45:22Z
dc.date.issued2004
dc.description.abstractThe chemical composition of rainwater samples collected from March 2002 to February 2003 in downtown São Paulo city (Universidade Presbiteriana Mackenzie) is presented. Potentiometric and conductimetric measurements were used to evaluate the [H+] and the total ionic content. Major anions and cations were determined by ion chromatography with conductivity detection. The rainwater was acidic with a mean pH of 4.99. The volume weighted means, VWM, of the anions nitrate, acetate and sulfate were, respectively, 21.2, 16.9 and 12.4 μmol L-1. Ammonium was the most abundant ion with a VWM of 37.6 μmol L-1. The contribution of each anion to the free acidity potential decreases in the following order: SO42- (28.8%), CH3COO- (24.7%), NO3- (22.8%), Cl- (13.4%), HCOO- (7.7%) and C2O 42- (2.5%). The relative contribution of the weak organic acids to the free acidity was significant, 34.9%.
dc.description.firstpage855
dc.description.issuenumber6
dc.description.lastpage861
dc.description.volume27
dc.identifier.doi10.1590/s0100-40422004000600003
dc.identifier.issn0100-4042
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/37949
dc.relation.ispartofQuimica Nova
dc.rightsAcesso Aberto
dc.subject.otherlanguageAcid rain
dc.subject.otherlanguageAir pollution
dc.subject.otherlanguageIonic composition
dc.titleComposition of rainwater in the central region of São Paulo City Composição iônica majoritária de águas de chuva no centro da cidade de São Paulo
dc.typeArtigo
local.scopus.citations43
local.scopus.eid2-s2.0-30744437932
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=30744437932&origin=inward
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