Zobrazeno 31 - 40
of 581
pro vyhledávání: '"Analytical Chemistry"'
Publikováno v:
Separation and purification technology 259, 118114-(2021). doi:10.1016/j.seppur.2020.118114
Hybrid organosilica membranes have great potential for realizing high-flux, high-selectivity gas separation and pervaporation. Current membranes, however, have one major problem: the intermediate layers between the selective layer and the porous supp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d1e1c7348444b5d71104612c5ae6a9f
https://hdl.handle.net/2128/27450
https://hdl.handle.net/2128/27450
Publikováno v:
Food Control
Food control
Food control
Products with a Protected Denomination of Origin (PDO) are vulnerable to misdescription of their true geographical origin. In this work a method has been developed that allows the authentication of La Vera paprika powder (Pimentón de la Vera), a PDO
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Quinones are electrophilic species which can react with various nucleophiles, like wine antioxidants, such as sulfur dioxide or ascorbic acid, thiols, amino acids, and numerous polyphenols. These reactions are very important in wine aging because the
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
A new methodology for lead traces determination has been developed based on the quenching effect on fluorescent emission of the complex formed by the metal with 8‑hydroxyquinoline and o-phenanthroline at λ em = 365 nm (λ exc = 250 nm). Experiment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c342646d1cf83213eb38b6b43627410e
https://www.sciencedirect.com/science/article/abs/pii/S0026265X19303509
https://www.sciencedirect.com/science/article/abs/pii/S0026265X19303509
Autor:
Amalia Luz Costa Pereira, Marcos A. Bezerra, Sergio Gustavo Marchetti, Fabio de S. Dias, Maria Elizabeth P.A. Guarino, Pablo P. Pedra
A method of preconcentration based in the magnetic solid phase microextraction with CoFe 2 O 4 nanoparticles for the determination of cadmium in oyster and water samples using flame atomic absorption spectrometry (FAAS). Magnetic nanomaterials ones h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a34a16527ae161ace6d24fb907601f58
https://linkinghub.elsevier.com/retrieve/pii/S0026265X18315704
https://linkinghub.elsevier.com/retrieve/pii/S0026265X18315704
A straightforward and rapid single-tube sample pretreatment for wear metals determination in used lubricating oils was developed in this work as an alternative to the reference pretreatment method (ASTM). A D-optimal mixture design on a three-compone
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35ba5036156919791f5eedc9c3fdce5f
https://linkinghub.elsevier.com/retrieve/pii/S0039914018311974
https://linkinghub.elsevier.com/retrieve/pii/S0039914018311974
In this work, a novel electrochemical biosensor has been fabricated based on step-by-step modification of aglassy carbon electrode (GCE) with methylene blue (MB)-DNA/multiwalled carbon nanotubes (MWCNTs)-chitosan (CS)/palladium nanoparticles (Pd NPs)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::570c16d67f42325e178ef3b5d6ba5fe6
https://linkinghub.elsevier.com/retrieve/pii/S0039914019304266
https://linkinghub.elsevier.com/retrieve/pii/S0039914019304266
Autor:
Alejandro C. Olivieri, Ana M. Jiménez-Carvelo, Antonio González-Casado, Carlos Cruz, Luis Cuadros-Rodríguez
Second-order data acquired using liquid chromatography coupled to a diode array detector were used to classify extra virgin olive oils samples according to their cultivars. The chromatographic fingerprints from the epoxidised fraction were obtained u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aadb4dd4be9726ae9c815ea7081a8fac
https://www.sciencedirect.com/science/article/abs/pii/S0039914018311834
https://www.sciencedirect.com/science/article/abs/pii/S0039914018311834
A comparative study of Sb(III) exposition is presented. The determination of trace amounts of Sb(III) present in tobacco samples (tobacco of conventional cigarettes, refill solutions for e-cigarettes, snuff used in water pipe, snus and dry rapé) has
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c83d6e738239d3801c2c53f504270c1
https://www.sciencedirect.com/science/article/abs/pii/S0026265X18314127
https://www.sciencedirect.com/science/article/abs/pii/S0026265X18314127
Fluorescence excitation-emission matrix spectroscopy coupled to multi-way analysis has proved to be a powerful tool for the study of complex systems with analytical purposes. However, scattering phenomena that are usually present in fluorescence land
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::236018d964542b1b54cf4b5ca310f888
https://linkinghub.elsevier.com/retrieve/pii/S0169743918307184
https://linkinghub.elsevier.com/retrieve/pii/S0169743918307184