Výsledky vyhledávání - "Antonella Lozano"

Comparative chemometric analysis of fluorescence and near infrared spectroscopies for authenticity confirmation and geographical origin of Argentinean extra virgin olive oils

Autor: Alejandro C. Olivieri, Valeria Antonella Lozano, Ana M. Jiménez-Carvelo

Publikováno v: Food Control. 96:22-28

Extra virgin olive oil (EVOO) is widely used in gastronomy because of its healthy properties, and is a candidate to be adulterated with other vegetable oils to reduce costs. This work shows the results of applying near infrared (NIR) and fluorescence

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5c19358bac5cd938ce1f73af3df4bb2
https://doi.org/10.1016/j.foodcont.2018.08.024

Zobrazit plný text záznamu

Determination of ochratoxin A in coffee and tea samples by coupling second-order multivariate calibration and fluorescence spectroscopy

Autor: Valeria Antonella Lozano, Graciela M. Escandar, Manuel Bravo, Albani L. Gonzalez

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

A new method to quantify the mycotoxin ochratoxin A (OTA) in coffee and tea samples is proposed based on second-order multivariate calibration and excitation-emission fluorescence matrix (EEFM) data. Experimental conditions were optimized by studying

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b6de37148a0d6e6b4b113e13260e1b7
https://www.sciencedirect.com/science/article/abs/pii/S0039914020305798

Zobrazit plný text záznamu

Simultaneous determination of quality parameters in yerba mate (Ilex paraguariensis) samples by application of near-infrared (NIR) spectroscopy and partial least squares (PLS)

Autor: Gianina B. Rossi, Valeria Antonella Lozano

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

A simple, fast and eco-friendly methodology to determine quality parameters, such as moisture, total ashes and caffeine content, in yerba mate samples was developed using near-infrared (NIR) spectroscopy and chemometrics. The NIR spectra of the yerba

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68b31adc62056a47a55ccbc20e43d07f
https://linkinghub.elsevier.com/retrieve/pii/S0023643820302784

Zobrazit plný text záznamu

Development of a second-order standard addition fluorescence method for the direct determination of riboflavin in human urine samples without previous clean up and separation steps

Autor: María L. Privitera, Valeria Antonella Lozano

Publikováno v: Microchemical Journal. 133:60-66

A new strategy for the determination of riboflavin (RF, or vitamin B2) in human urine samples has been developed, combining excitation-emission fluorescence matrix (EEFM) data in standard addition mode and second-order chemometric analysis. The metho

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8ea6526f65a212e7da04a00f4e88c24
https://doi.org/10.1016/j.microc.2017.02.033

Zobrazit plný text záznamu

On second-order calibration based on multivariate curve resolution in the presence of highly overlapped profiles

Autor: Gabriela A. Ibañez, María J. Culzoni, Alejandro C. Olivieri, Mirta Raquel Alcaraz, Valeria Antonella Lozano

Publikováno v: Analytica chimica acta. 1096

Multivariate curve resolution has been applied to both simulated and experimental data sets where high or even complete overlapping occurs between component profiles in one data mode. It is shown that rotational ambiguity exists in the bilinear decom

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a21928827fbf933df98d558e3465f780
https://pubmed.ncbi.nlm.nih.gov/31883591

Zobrazit plný text záznamu

Simultaneous determination of urea herbicides in water and soil samples based on second-order photoinduced fluorescence data

Autor: Valeria Antonella Lozano, Graciela M. Escandar

Publikováno v: Analytical Methods. 8:7396-7404

This work presents an innovative strategy for the simultaneous determination of four widely employed urea-derivative herbicides, namely isoproturon, linuron, monuron and rimsulfuron, in interfering environments, combining second-order photoinduced fl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7331a332fe07ff6971c084c1c7408a34
https://doi.org/10.1039/c6ay02136k

Zobrazit plný text záznamu

Novel augmented parallel factor model for four-way calibration of high-performance liquid chromatography–fluorescence excitation–emission data

Autor: Alejandro C. Olivieri, Santiago Andres Bortolato, Arsenio Muñoz de la Peña, Valeria Antonella Lozano

Publikováno v: Chemometrics and Intelligent Laboratory Systems. 141:1-11

A new augmented parallel factor analysis model (Augmented PARAFAC) is presented, inspired by the useful augmentation concept employed in multivariate curve resolution-alternating least-squares (MCR-ALS), applicable to calibration based on non-quadril

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb122856ff774fca8cc24f7b82339253
https://doi.org/10.1016/j.chemolab.2014.11.013

Zobrazit plný text záznamu

Second-order advantage with excitation–emission photoinduced fluorimetry for the determination of the antiepileptic carbamazepine in environmental waters

Autor: Valeria Antonella Lozano, Graciela M. Escandar

Publikováno v: Analytica Chimica Acta. 782:37-45

A photochemically-induced fluorescence system combined with second-order chemometric analysis for the determination of the anticonvulsant carbamazepine (CBZ) is presented. CBZ is a widely used drug for the treatment of epilepsy and is included in the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29d97d6458942c1d65fe76e663653602
https://doi.org/10.1016/j.aca.2013.04.020

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání