Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Claudia L. Caldeira"'
Autor:
Gabriella A. Borges, Guilhermina de O. Souza, Patrícia S. F. Lopes, Virginia S. T. Ciminelli, Claudia L. Caldeira, Guilherme D. Rodrigues
Publikováno v:
Química Nova, Vol 43, Iss 6, Pp 697-704 (2020)
The aim of this work was to develop a method using high performance liquid chromatography coupled with hydride generation atomic fluorescence spectrometry (HPLC-HG-AFS) for the determination and speciation analysis of the inorganic and organic specie
Externí odkaz:
https://doaj.org/article/e450e3e14ddc4c58b826fd358a6ba3f2
Publikováno v:
Science of The Total Environment. 673:36-43
This study assessed various exposure pathways of arsenic and their health risk apportionment to the residents of Paracatu, a gold mining town in Brazil. We measured arsenic concentrations in 50 groundwater and surface town water samples from nearby r
Autor:
Aparecida Barbosa Mageste, Betânia A. de Araújo Faria, Leandro Rodrigues de Lemos, Guilherme Dias Rodrigues, Roberta C. Assis, Claudia L. Caldeira
Publikováno v:
Microchemical Journal. 147:429-436
This work utilizes the liquid–liquid extraction technique of aqueous two-phase systems (ATPS) formed by a polymer and electrolyte to develop a novel methodology for the extraction, determination, and speciation analysis of inorganic arsenic. To opt
Autor:
Claudia L. Caldeira, Camila C. Amorim, Ariádna Andrade Saldanha da Silva, Sandrine F. Araujo, Virginia S.T. Ciminelli
Publikováno v:
Environmental Science and Pollution Research. 26:4266-4276
The aim of this work is to evaluate the application of a steel waste, basic oxygen furnace sludge (BOFS), rich in iron, to treat water contaminated with elevated arsenic and sulfate concentrations. In the first step, three doses (10, 60, and 80 g L
Autor:
Virginia S.T. Ciminelli, Daphne Chiara Antônio, Massimo Gasparon, Itamar D. Delbem, Erico T.F. Freitas, Claudia L. Caldeira, Sunday J. Olusegun
Publikováno v:
Environmental pollution (Barking, Essex : 1987). 274
A comprehensive characterization was performed to investigate the composition and mineralogy of soils from a gold mining region and their correlation with arsenic (As) total concentration and its bioaccessible fraction. The arsenic bioaccessible (BAC
Autor:
Virginia S. T. Ciminelli, Gabriella Alexandre Borges, Guilhermina de O. Souza, Claudia L. Caldeira, Patrícia S. F. Lopes, Guilherme Dias Rodrigues
Publikováno v:
Química Nova, Volume: 43, Issue: 6, Pages: 697-704, Published: 22 JUL 2020
Química Nova v.43 n.6 2020
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Química Nova, Vol 43, Iss 6, Pp 697-704 (2020)
Química Nova v.43 n.6 2020
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Química Nova, Vol 43, Iss 6, Pp 697-704 (2020)
The aim of this work was to develop a method using high performance liquid chromatography coupled with hydride generation atomic fluorescence spectrometry (HPLC-HG-AFS) for the determination and speciation analysis of the inorganic and organic specie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17a7a8bd036067d79b0e0290d0cdf262
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422020000600697&lng=en&tlng=en
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422020000600697&lng=en&tlng=en
Autor:
Isadora C. Carvalho, Alexandra A.P. Mansur, Herman S. Mansur, Andrey Pereira Lage, Dionei Joaquim Haas, Virginia S. T. Ciminelli, Fernanda G.L. Medeiros Borsagli, Claudia L. Caldeira
Publikováno v:
Environmental technology. 42(13)
In this work, it was developed three-dimensional (3D) porous hydrogel sponges produced by the freeze-dried process using chitosan polymer functionalized by 11-mercaptoundecanoic acid (MUA). These chitosan-based sponges were used as cationic adsorbent
Autor:
Virginia S.T. Ciminelli, Claudia L. Caldeira, Maria Sylvia Silva Dantas, Erico T.F. Freitas, D. Majuste, P.M. Ferreira
Publikováno v:
Journal of Hazardous Materials. 412:125236
Arsenopyrite (FeAsS), the most common arsenic-bearing mineral, is usually found associated with pyrite (FeS2) in gold mining tailings. This work examined the galvanic effect of FeS2 on As release from FeAsS oxidation in circumneutral media under oxyg
Autor:
Virginia S.T. Ciminelli, Massimo Gasparon, Gabriela Cordeiro Silva, Jack C. Ng, Claudia L. Caldeira
Publikováno v:
Chemosphere. 168:996-1003
The human health risk associated with arsenic in food in Southeast Brazil was quantified. Based on the most commonly consumed food types in the Brazilian diet, the maximum inorganic As (iAs) daily intake from food (0.255 μg kg−1 body weight per da
Autor:
Jack C. Ng, Claudia L. Caldeira, Massimo Gasparon, Itamar D. Delbem, Marcos A. Morais, Erico T.F. Freitas, Virginia S.T. Ciminelli
Publikováno v:
The Science of the total environment. 689
Bioaccessibility (BAC) of fine surface dust (FSD, particle size ≤10 μm) and surface dust samples (particle size ≤250 μm) collected from a gold mining district was used as a tool to determine the portion of arsenic that would be available via si