Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Manuel H. Barceló-Quintal"'
Autor:
Manuel H. Barceló-Quintal, Elba R. Castillo-Borges, Dorian R. Ramírez-Sosa, José M. Marrufo-Gómez, Roger Méndez-Novelo, María R. Sauri-Riancho
Publikováno v:
Waste Management. 33:390-395
The objective of this study was to identify the organic compounds removed from the leachate when treated with Fenton–Adsorption by gas chromatography coupled to mass spectrometry (GC–MS) in order to identify toxic compounds that could be harmful
Publikováno v:
Journal of Environmental Science and Health, Part B. 43:546-552
Photochemical degradation of methylparathion (O,O,-dimethyl O-4 nitrophenylphosphorothioate) in the presence of humic acid between pH 2 and 7 was monitored by differential pulse polarography. Humic acid was not electro-active under the experimental c
Autor:
José A. Manzanilla-Cano, Manuel H. Barceló-Quintal, Margarita Reyes-Salas, Eugenio O. Reyes-salas, Daniel Juárez‐Mendoza
Publikováno v:
Analytical Letters. 39:161-171
In this work an electrochemical method is evaluated for direct hydroxymethylfurfural (HMF) content determination in untreated honey samples. The HMF presented a single, well‐defined reduction signal at −1100 mV vs. Ag/AgCl. Borate was confirmed a
Autor:
Juan Ramírez‐Balderas, Eugenio O. Reyes-salas, Manuel H. Barceló-Quintal, José A. Manzanilla-Cano
Publikováno v:
Analytical Letters. 37:463-472
Indigo has been used for thousands of years to color and paint different substrates, including medicines, food, cosmetics, and textiles. Its commercial importance has led to development of a number of quantitative determination procedures based on ti
Autor:
José A. Manzanilla-Cano, M. A. Dosal-Gómez, Manuel H. Barceló-Quintal, Eugenio O. Reyes-salas
Publikováno v:
Analytical Letters. 35:123-133
A description is made of determination of Ni (II), Co (II), Sb (III), and As (V) in a mining aqueous sample with complex chemical composition by differential pulse voltammetry (DPV) at a static mercury drop electrode (SMDE). The analyzed sample conta
Autor:
M. A. Dosal-Gómez, José A. Manzanilla-Cano, Manuel H. Barceló-Quintal, L. Rangel-Ordoñez, Eugenio O. Reyes-salas
Publikováno v:
Analytical Letters. 35:971-984
Arnica montana is a medicinal plant. Its biological activity is related to carboxyphenolic acids such as caffeic acid. This paper proposes a caffeic acid quantification method of Arnica montana tinctures by lineal sweep voltammetry with a platinum ro
Autor:
Eugenio O. Reyes-salas, José A. Manzanilla-Cano, Manuel H. Barceló-Quintal, J. Flores-Rodríguez
Publikováno v:
Analytical Letters. 34:2349-2360
A procedure to determine cadmium, lead, zinc and copper in urban aerosol samples was developed. Differential-pulse anodic stripping voltammetry (DPASV) at a hanging mercury drop electrode (HMDE) was used as the analytical method, and accuracy of the
Autor:
Manuel H. Barceló-Quintal, Eugenio O. Reyes-salas, José A. Manzanilla-Cano, Julio Flores-Rodríguez
Publikováno v:
International Journal of Environmental Analytical Chemistry. 80:115-127
The electrochemical behavior of methylparathion under UV irradiation was monitored by polarography in an aqueous medium (pH 6.5) at 254 and 366 nm, and the effects of atmospheric oxygen and TiO2 on methylparathion were also looked at. Dissapearance o
Publikováno v:
International Journal of Environmental Analytical Chemistry. 75:387-405
One of the most important transformation reactions of methylparathion, an organophosphorus pesticide, was studied. The redox transformation of methylparathion was carried out using different electrochemical methods in an aqueous medium. The study was
Autor:
José A. Manzanilla-Cano, Tania Isolina Coral-Martínez, Manuel H. Barceló-Quintal, Ligia Del C. Alcocer-Can
Publikováno v:
Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes. 45(4)
Photochemical degradation of methylparathion (O,O,-dimethyl O-4 nitrophenylphosphorothioate) in the presence of fulvic acid (FA) between pH 2 and 7 was studied by differential pulse polarography (DPP). Fulvic acid and its photoproducts were not elect