FN Archimer Export Format
PT J
TI Trace metal dynamics in an industrialized Brazilian river: A combined application of Zn isotopes, geochemical partitioning, and multivariate statistics
BT 
AF Tonhá, Myller S.
   FERREIRA ARAUJO, Daniel
   Araújo, Rafael
   Cunha, Bruno C.A.
   Machado, Wilson
   Portela, Joelma F.
   PR Souza, João
   Carvalho, Hikari K.
   Dantas, Elton L.
   Roig, Henrique L.
   Seyler, Patrick
   Garnier, Jeremie
AS 1:1;2:2;3:1;4:3;5:4;6:5;7:5;8:1;9:1;10:1,6;11:3,7;12:1,6;
FF 1:;2:PDG-RBE-BE-LBCM;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;
C1 Universidade de Brasília, Instituto de Geociências, Campus Darcy Ribeiro, L2, Asa Norte, 70910900 Brasília, Distrito Federal, Brazil
   Laboratoire de Biogéochimie des Contaminants Métalliques, Ifremer, Centre Atlantique, F44311 Nantes Cedex 3, France
   Institute of Geosciences, University of São Paulo, Rua do Lago, 562, São Paulo 05508-080, Brazil
   Universidade Federal Fluminense, Programa de Geoquímica, Campus do Valonguinho, Niterói, Rio de Janeiro, Brazil
   Analytical and Environmental Chemistry Laboratory, Instituto de Química, University of Brasilia, Brasilia, Federal District 70919-970, Brazil
   Laboratoire Mixte International “Observatoire des Changements Environnementaux” (LMI OCE), Institut de Recherche pour le Développement/University of Brasilia, Campus Darcy Ribeiro, Brasilia, Brazil
   Hydrosciences Montpellier, Université de Montpellier, Institut de Recherche pour le développement, Centre National de la Recherche Scientifique, Montpellier, France
C2 UNIV BRASILIA, BRAZIL
   IFREMER, FRANCE
   UNIV SAO PAULO, BRAZIL
   UNIV FED FLUMINENSE, BRAZIL
   UNIV BRASILIA, BRAZIL
   UNIV BRASILIA, BRAZIL
   UNIV MONTPELLIER, FRANCE
SI NANTES
SE PDG-RBE-BE-LBCM
IN WOS Ifremer UPR
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 6.796
TC 17
UR https://archimer.ifremer.fr/doc/00648/76028/77012.pdf
LA English
DT Article
DE ;Metal pollution;Isotope tracer;Sequential extraction;Anthropogenic activity
AB The Paraiba do Sul (PSR) and Guandu Rivers (GR) water diversion system (120 km long) is located in the main industrial pole of Brazil and supplies drinking water for 9.4 million people in the metropolitan region of Rio de Janeiro. This study aims to discern the trace metals dynamics in this complex aquatic system. We used a combined approach of geochemical tools such as geochemical partitioning, Zn isotopes signatures, and multivariate statistics. Zinc and Pb concentrations in Suspended Particulate Matter (SPM) and sediments were considerably higher in some sites. The sediment partition of As, Cr, and Cu revealed the residual fraction (F4) as the main fraction for these elements, indicating low mobility. Zinc and Pb were mostly associated with the exchangeable/carbonate (F1) and the reducible (F2) fractions, respectively, implying a higher susceptibility of these elements to being released from sediments. Zinc isotopic compositions of sediments and SPM fell in a binary mixing source process between lithogenic (δ66/64ZnJMC ≈ + 0.30‰) and anthropogenic (δ66/64ZnJMC ≈ + 0.15‰) end members. The lighter δ66/64ZnJMC values accompanied by high Zn concentrations in exchangeable/carbonate fraction (ZnF1) enable the tracking of Zn anthropogenic sources in the studied rivers. Overall, the results indicated that Hg, Pb, and Zn had a dominant anthropogenic origin linked to the industrial activities, while As, Cr, and Cu were mainly associated with lithogenic sources. This work demonstrates how integrating geochemical tools is valuable for assessing geochemical processes and mixing source effects in anthropized river watersheds. 
PY 2021
PD MAR
SO Journal Of Environmental Sciences
SN 1001-0742
PU Elsevier BV
VL 101
UT 000598914600026
BP 313
EP 325
DI 10.1016/j.jes.2020.08.027
ID 76028
ER

EF