Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Alessandra S. Henn"'
Autor:
Gustavo Gohlke, Vitoria H. Cauduro, Emanuele Frozi, Luana F. Rocha, Giancarlo R. Machado, Alessandra S. Henn, Yang Tao, Marcia F. Mesko, Erico M. M. Flores
Publikováno v:
Ultrasonics Sonochemistry, Vol 103, Iss , Pp 106788- (2024)
In this study, ultrasound (US) was evaluated for As, Cd, Pb, Mn, Sr and V extraction from seaweed samples. The following parameters of ultrasound-assisted extraction (UAE) using an US bath were: frequency (25 to 130 kHz), amplitude (30 to 100%), temp
Externí odkaz:
https://doaj.org/article/816fc1ae8c474a20b889d733142d29f7
Publikováno v:
Journal of Analytical Atomic Spectrometry. 36:1478-1488
New approaches in isotope geochemistry require the development of novel methods for the isotopic analysis of crude oil, a typically complex and very hard to digest organic geological matrix. In this work, methods were developed for the determination
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::530f9d6f949cd62026212e3f16a6b459
https://doi.org/10.1039/d1ja00120e
https://doi.org/10.1039/d1ja00120e
Autor:
Erico M.M. Flores, Marcia F. Mesko, Diogo La Rosa Novo, Vanize Caldeira Costa, Alessandra S. Henn
Publikováno v:
Analytica Chimica Acta. 1098:1-26
The daily use of cosmetics may expose consumers to localized skin problems and systemic effects caused by absorption of chemical elements. The requirements for suitable quality control and maximum limits for toxic and potentially toxic elements in co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a08973d124179e85fbf1f469f4666443
https://doi.org/10.1016/j.aca.2019.11.046
https://doi.org/10.1016/j.aca.2019.11.046
Autor:
Matheus F. Pedrotti, Alessandra S. Henn, Fabio A. Duarte, José N. G. Paniz, Erico M.M. Flores, Angelica C. Frohlich, Cezar A. Bizzi
Publikováno v:
Microchemical Journal. 147:463-468
In this work, a new portable device based on a monomode microwave applicator was developed and applied for microwave-assisted solid sampling analysis coupled to flame furnace atomic absorption spectrometry (MW-SS-FF-AAS). As an example of application
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2418ac29a75175711eb8e42a01b234a0
https://doi.org/10.1016/j.microc.2019.03.051
https://doi.org/10.1016/j.microc.2019.03.051
Autor:
Paola Azevedo Mello, Julia Eisenhardt de Mello, Diogo La Rosa Novo, Marcia F. Mesko, Alessandra S. Henn, Filipe Soares Rondan
Publikováno v:
Talanta. 191:415-421
In this work, an analytical method for bromine and iodine determination in human saliva was proposed. A simple protocol based on centrifugation and direct analysis of supernatant by inductively coupled plasma mass spectrometry (ICP-MS) was investigat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4f0daffb90d1c476249019b714521f8
https://doi.org/10.1016/j.talanta.2018.08.081
https://doi.org/10.1016/j.talanta.2018.08.081
Autor:
Matheus D, Baldissera, Carine F, Souza, Hugo Napoleão P, da Silva, Carla C, Zeppenfeld, Juan L, Dornelles, Alessandra S, Henn, Fábio Andrei, Duarte, Silvio T, da Costa, Aleksandro S, Da Silva, Mauro A, Cunha, Bernardo, Baldisserotto
Publikováno v:
Comparative biochemistry and physiology. Toxicologypharmacology : CBP. 231
The trend toward using plant-based ingredients in aquafeeds has raised important concerns for aquaculture owing to the negative impacts of mycotoxins on fish health; with emphasis for contamination by fumonisin B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::d75c725e9812640fb1620bae192944c8
https://pubmed.ncbi.nlm.nih.gov/32169414
https://pubmed.ncbi.nlm.nih.gov/32169414
Autor:
Paola A. Mello, John Parnell, Joerg Feldmann, Erico M.M. Flores, Alessandra S. Henn, Joseph G.T. Armstrong, Liam A. Bullock, Marcia F. Mesko
Publikováno v:
Geological Journal. 54:1401-1412
Standard mode and collision/reaction cell mass spectroscopy methods have been utilised in order to overcome spectral interferences and provide ultra-low quantification of selenium (Se) and tellurium (Te) in British coals for the first time. The accur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92ce1348f8b113584958c46eb75c2a73
https://doi.org/10.1002/gj.3238
https://doi.org/10.1002/gj.3238
Autor:
Magali Perez, Alessandra S. Henn, Joseph G.T. Armstrong, Liam A. Bullock, Joerg Feldmann, Erico M.M. Flores, Paola A. Mello, John Parnell, Filipe Soares Rondan, Marcia F. Mesko
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 143:48-54
A method is proposed for the determination of selenium at low concentration in coal by collision/reaction cell technology inductively coupled plasma mass spectrometry (CRC-ICP-MS). Samples were decomposed by high pressure microwave-assisted wet diges
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dd8465dee759e239803ee5c8a6113fe
https://doi.org/10.1016/j.sab.2018.02.014
https://doi.org/10.1016/j.sab.2018.02.014
Autor:
Alessandra S. Henn, Erico M.M. Flores, Valderi L. Dressler, Paola Azevedo Mello, Jussiane S. Silva
Publikováno v:
Analytical Chemistry. 90:7064-7071
A comprehensive study was developed showing the feasibility of determination of rare earth elements (REE) in low concentration in crude oil by using direct sampling electrothermal vaporization system coupled to inductively coupled plasma mass spectro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e604feac8d114c794491ba33c03e057b
https://doi.org/10.1021/acs.analchem.8b01460
https://doi.org/10.1021/acs.analchem.8b01460
Autor:
Joerg Feldmann, Valderi L. Dressler, Alessandra S. Henn, Erico M.M. Flores, Paola A. Mello, Marcia F. Mesko
Publikováno v:
Journal of Analytical Atomic Spectrometry. 33:1384-1393
In this work, a method for the determination of As, Sb, Se and Te in mineral coal was developed using solid sampling electrothermal vaporization inductively coupled plasma mass spectrometry (SS-ETV-ICP-MS). The following operational parameters of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e635436168720f47945d1db6abe2233c
https://doi.org/10.1039/c8ja00129d
https://doi.org/10.1039/c8ja00129d