Abstract
The natural organic matter (NOM) is critical in cycling elements in water bodies, presenting a more labile fraction and a more recalcitrant, and last is composed of humic substances. Several studies on the characterization of organic matter and quantification of macro and microelements have been conducted in the Amazon, but is largely absent in this approach Itacoatiara region. The main objective of this study is to determine the stock of metals and calculate how much is exported to the Amazon River, in addition to studying the organic matter of black water rivers through a characterization of humic substances, followed by quantification of labile organic matter and recalcitrant . To this end, sediment sampling will be carried (surface) and soil and two water samples at eight locations, five in water bodies of Itacoatiara region, two along the Amazon River and one on the Madeira River (representative of black waters and white). Will be held extraction and fractionation of aquatic humic substances (AHS) of Caru river (blackwater), followed by characterization by UV-Vis, IR spectroscopy, molecular fluorescence, 13 C nuclear magnetic resonance, Offline Tetramethylammonium Hydroxide (TMAH) - GC-MS thermochemolysis. The characterization will include study lability and recalcitrance of aquatic MON method using the kinetics consumption of hydrogen peroxide. In all the samples of sediment, soil and surface water will be quantified concentration of total dissolved metal (Cd, Cr, Ni, Zn, Fe, Mn, Pb, Cu and Ba) using Atomic Absorption Spectrophotometer with atomization Electrothermal (GFAAS) or with atomization by flame (FAAS). The analytical reliability of the results will be verified with the use of certified reference materials and continued participation of the Environmental Sciences Studies Laboratory Proficiency study for metals. With the results it can determine the inventory and how much is exported metal some tributaries to the Amazon River. As for the results of organic matter is expected this work to obtain a broad characterization of MON present in the region inferring their role in carbon cycling. (AU)
Scientific publications
(12)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DA SILVA, LEILA SOARES;
CONSTANTINO, ISABELA CARREIRA;
BENTO, LUCAS RAIMUNDO;
TADINI, AMANDA MARIA;
BISINOTI, MARCIA CRISTINA;
BOSCOLO, MAURICIO;
FERREIRA, ODAIR PASTOR;
MOUNIER, STEPHANE;
PICCOLO, ALESSANDRO;
SPACCINI, RICCARDO;
CORNELIO, MARINONIO LOPES;
MOREIRA, ALTAIR BENEDITO.
Humic extracts from hydrochar and Amazonian Anthrosol: Molecular features and metal binding properties using EEM-PARAFAC and 2D FTIR correlation analyses.
Chemosphere,
v. 256,
OCT 2020.
Web of Science Citations: 0.
BENTO, LUCAS R.;
CONSTANTINO, ISABELA C.;
TADINI, AMANDA M.;
MELO, CAMILA A.;
FERREIRA, ODAIR P.;
MOREIRA, ALTAIR B.;
BISINOTI, MARCIA C.
Chemical and Spectroscopic Characteristics of Anthrosol (Amazonian Dark Earth) and Surrounding Soil from the Brazilian Amazon Forest: Evaluation of Mineral and Organic Matter Content by Depth.
Journal of the Brazilian Chemical Society,
v. 31,
n. 8,
p. 1623-1634,
AUG 2020.
Web of Science Citations: 1.
DOS SANTOS, JOAO VITOR;
FREGOLENTE, LAIS GOMES;
MOREIRA, ALTAIR BENEDITO;
FERREIRA, ODAIR PASTOR;
MOUNIER, STEPHANE;
VIGUIER, BRUNO;
HAJJOUL, HOUSSAM;
BISINOTI, MARCIA CRISTINA.
Humic-like acids from hydrochars: Study of the metal complexation properties compared with humic acids from anthropogenic soils using PARAFAC and time-resolved fluorescence.
Science of The Total Environment,
v. 722,
JUN 20 2020.
Web of Science Citations: 1.
BENTO, LUCAS RAIMUNDO;
MELO, CAMILA ALMEIDA;
FERREIRA, ODAIR PASTOR;
MOREIRA, ALTAIR BENEDITO;
MOUNIER, STEPHANE;
PICCOLO, ALESSANDRO;
SPACCINI, RICCARDO;
BISINOTI, MARCIA CRISTINA.
Humic extracts of hydrochar and Amazonian Dark Earth: Molecular characteristics and effects on maize seed germination.
Science of The Total Environment,
v. 708,
MAR 15 2020.
Web of Science Citations: 0.
CONSTANTINO, ISABELA C.;
TEODORO, GRAZIELLY C.;
MOREIRA, ALTAIR B.;
PASCHOAL, FABIANA M. M.;
TRINDADE, WANDERSON G.;
BISINOTI, MARCIA C.
Distribution of Metals in the Waters and Sediments of Rivers in Central Amazon Region, Brazil.
Journal of the Brazilian Chemical Society,
v. 30,
n. 9,
p. 1906-1915,
SEP 2019.
Web of Science Citations: 0.
FREGOLENTE, LAIS GOMES;
AZEVEDO RANGEL MIGUEL, THAIZ BATISTA;
MIGUEL, EMILIO DE CASTRO;
MELO, CAMILA DE ALMEIDA;
MOREIRA, ALTAIR BENEDITO;
FERREIRA, ODAIR PASTOR;
BISINOTI, MARCIA CRISTINA.
Toxicity evaluation of process water from hydrothermal carbonization of sugarcane industry by-products.
Environmental Science and Pollution Research,
v. 26,
n. 27, SI,
p. 27579-27589,
SEP 2019.
Web of Science Citations: 3.
OLIVEIRA, NAIARA C.;
PASCHOAL, ALEXANDRE R.;
PAULA, RICARDO J.;
CONSTANTINO, ISABELA C.;
BISINOTI, MARCIA C.;
MOREIRA, ALTAIR B.;
FREGOLENTE, LAIS G.;
SANTANA, ARIANE M.;
SOUSA, FRANCISCO A.;
FERREIRA, ODAIR P.;
PAULA, AMAURI J.
Morphological analysis of soil particles at multiple length-scale reveals nutrient stocks of Amazonian Anthrosols.
Geoderma,
v. 311,
p. 58-66,
FEB 1 2018.
Web of Science Citations: 5.