Výsledky vyhledávání - "M. A. Romero-Romo"

Potentiometric Quantification of the Benzoate Ion in Nonalcoholic Beverages Using a Solid Electrode Modified with a Polypyrrole-Based Selective Membrane

Autor: G. A. Álvarez Romero, G. Y. Aguilar Lira, C. A. Galán Vidal, T. de J. Licona Sánchez, M. A. Romero Romo, M. E. Páez Hernández

Publikováno v: Electroanalysis. 25:1519-1527

This work presents the results obtained on the construction of a potentiometric ion-selective electrode based on a polypyrrole (PPy) selective membrane to quantify the benzoate ion in nonalcoholic beverages. The electrode modification with benzoate (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::722224661ff370da54538a29e2017a0c
https://doi.org/10.1002/elan.201300010

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Determination of the complexation constants of Pb(II) and Cd(II) with thymol blue using spectrophotometry, SQUAD and the HSAB principle

Autor: Alberto Rojas-Hernández, Manuel Palomar-Pardavé, M. A. Romero Romo, Ma. Teresa Ramírez-Silva, Patricia Balderas-Hernández, Marcelo Galván

Publikováno v: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 66:68-73

This paper presents the results concerning the determination of the formation constants of the complexes between thymol blue, TB, and the metal ions Pb(II) or Cd(II). The experimental procedure was carried out in the presence of a nitrogen atmosphere

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9f61c02867c4d4245d183779ad740f7
https://doi.org/10.1016/j.saa.2006.02.022

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Study on the stability of adrenaline and on the determination of its acidity constants

Autor: S, Corona-Avendaño, G, Alarcón-Angeles, A, Rojas-Hernández, M A, Romero-Romo, M T, Ramírez-Silva

Publikováno v: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 61:305-311

In this work, the results are presented concerning the influence of time on the spectral behaviour of adrenaline (C(9)H(13)NO(3)) (AD) and of the determination of its acidity constants by means of spectrophotometry titrations and point-by-point analy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51d6106ef5382821ac2dd6e9dfb6f174
https://doi.org/10.1016/j.saa.2004.03.023

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Theoretical study on the chemical stability of adrenalin species

Autor: V. G. Gámez-García, C. M. Cortés-Romero, M. E. Palomar-Pardavé, M. T. Ramírez-Silva, M. A. Romero-Romo, A. Cuán

Publikováno v: Universidad Autónoma Metropolitana
UAM
Redalyc-UAM
Revista Mexicana de Física (México) Num.1 Vol.59

"A theoretical study for the adrenalin molecule was carried out to reproduce the electronic properties for the neutral, protonated and oxidized forms of adrenalin. The dihedral angle H-C-N-H and the three angles from the alcohols groups, –COH, were

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::01f6f5a0c3e7d3fe5fc4259ebb3b05c5
https://www.redalyc.org/articulo.oa?id=57030970022

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