Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Julio Cezar Paz de Mattos"'
Autor:
Rafael F. Santos, Luiz F. Rodrigues, Julio Cezar Paz de Mattos, Erico M.M. Flores, Fabio A. Duarte, Rodrigo C. Bolzan
Publikováno v:
Talanta. 218
A new procedure is proposed for the determination of metal contaminants (Cr, Fe, Mg, Mn, Na and Ni) in polymeric diphenylmethane diisocyanate (PMDI), a raw material used to produce polyurethane polymers. The feasibility of using Zeeman-effect backgro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c17d5b19c66abfd5adb4fea20e047382
https://pubmed.ncbi.nlm.nih.gov/32797886
https://pubmed.ncbi.nlm.nih.gov/32797886
Autor:
Erico M.M. Flores, Fabio A. Duarte, Luiz F. Rodrigues, Rodrigo C. Bolzan, Julio Cezar Paz de Mattos
Publikováno v:
J. Anal. At. Spectrom.. 29:324-331
The concentration of Fe, Mg, Mn and Na at ultra-trace levels was determined in polymeric diphenylmethane dianiline, a raw material for polyurethane production, by direct sampling graphite furnace atomic absorption spectrometry (DS-GFAAS). A Zeeman-ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a70e8ce6b825102d17c30137b525e1a2
https://doi.org/10.1039/c3ja50328c
https://doi.org/10.1039/c3ja50328c
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 66:637-643
The trace impurities Cr, Cu, Fe, K, Mn, Sb and Zn were determined in powdered aluminum nitride by direct solid sampling graphite furnace atomic absorption spectrometry using a ZEEnit 60 atomic absorption spectrometer. This spectrometer features inver
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a924937c5044692549caf095e7dd85cc
https://doi.org/10.1016/j.sab.2011.07.002
https://doi.org/10.1016/j.sab.2011.07.002
Autor:
Edson I. Muller, Julio Cezar Paz de Mattos, José N. G. Paniz, Erico M.M. Flores, Ana Paula Fleig Saidelles, Valderi L. Dressler, Juliana S.F. Pereira
Publikováno v:
International Journal of Environmental Analytical Chemistry. 89:129-140
A procedure for trace determination of Cd and Pb in medicinal samples using solid sampling flame atomic absorption spectrometry (SS-F AAS) was developed for trace determination of Cd and Pb in medicinal plants. Powdered samples were mixed with high p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba0c3a475a065803367a8ad05cd5bc25
https://doi.org/10.1080/03067310802578945
https://doi.org/10.1080/03067310802578945
Autor:
Valderi L. Dressler, Luiz F. Rodrigues, Dirce Pozebon, Erico M.M. Flores, Julio Cezar Paz de Mattos
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 62:933-938
Trace impurities of Cd, Cu and Pb were determined in alumina based catalysts using direct solid sampling graphite furnace atomic absorption spectrometry (DSS-GF AAS). The analyzed catalysts are widely used in petrochemical processes. The following an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb39c111acd3243253cfda09f93d2dba
https://doi.org/10.1016/j.sab.2007.04.011
https://doi.org/10.1016/j.sab.2007.04.011
Autor:
Erico M.M. Flores, Adriane Medeiros Nunes, Julio Cezar Paz de Mattos, Valderi L. Dressler, Ayrton F. Martins
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 60:687-692
Citric acid was used as a chemical modifier for Pb determination by graphite furnace atomic absorption spectrometry in dietary supplement samples (calcium carbonate, dolomite and oyster shell samples) and its efficiency was compared to the use of pal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2dbf0fd06abf0e08e2e1e92e2a204666
https://doi.org/10.1016/j.sab.2005.02.027
https://doi.org/10.1016/j.sab.2005.02.027
Autor:
Adilson Ben da Costa, Erico M.M. Flores, José N. G. Paniz, Edson I. Muller, Julio Cezar Paz de Mattos, Valderi L. Dressler
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 60:583-588
In this study, a new device was applied for direct solid sampling flame atomic absorption spectrometry. It was used for trace determination of cadmium in biological samples (bovine and chicken liver). Test samples (0.5 to 7 mg) were weighed into smal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19d3119bf9eb6ad7a2563b22e7314854
https://doi.org/10.1016/j.sab.2005.03.014
https://doi.org/10.1016/j.sab.2005.03.014
Autor:
Julio Cezar Paz de Mattos, Rodrigo C. Bolzan, Erico M.M. Flores, Valderi L. Dressler, Diogo P. Moraes
Publikováno v:
Journal of the Brazilian Chemical Society, Volume: 21, Issue: 4, Pages: 686-693, Published: 2010
Journal of the Brazilian Chemical Society v.21 n.4 2010
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society v.21 n.4 2010
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
A method for arsenic determination in pharmaceutical grade BaSO4 by solid sampling electrothermal atomic absorption spectrometry (SoS-ET AAS) is described. Two background (BG) correction systems, deuterium and Zeeman-effect (Z), were evaluated. Backg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b04610e216236732bd9ba6ec20735872
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000400015&lng=en&tlng=en
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000400015&lng=en&tlng=en
Autor:
Erico M.M. Flores, Luis Frederico Rodrigues, Valderi L. Dressler, Julio Cezar Paz de Mattos, Rodrigo C. Bolzan
Publikováno v:
Talanta. 74(1)
A procedure for chromium (Cr) determination in pharmaceutical grade barium sulfate by direct solid sampling electrothermal atomic absorption spectrometry (DSS-ET AAS) with Zeeman-effect background correction was developed. Operational conditions for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::307e77c7692680ea8fa0c959d466a6f3
https://pubmed.ncbi.nlm.nih.gov/18371620
https://pubmed.ncbi.nlm.nih.gov/18371620
Autor:
Clarissa P. Frizzo, Erico M.M. Flores, V. L. Dressler, Taís Cristina Unfer, Paula Rossini Augusti, Tatiana Emanuelli, M. Hahn, Julio Cezar Paz de Mattos, Greicy M.M. Conterato
Publikováno v:
Food additives and contaminants. 23(2)
The lead and calcium content of calcium supplements available in Brazil were determined by graphite furnace and flame atomic absorption spectrometry, respectively. Samples were microwave-digested in concentrated HNO(3). Citric acid was used as a chem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a9dfb56daabddb72cef00c5392fbf8a
https://pubmed.ncbi.nlm.nih.gov/16449055
https://pubmed.ncbi.nlm.nih.gov/16449055