Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Juan A. Muñoz-Leyva"'
Autor:
Marı́a del Mar Cordero-Rando, Manuel Barea-Zamora, José Luis Hidalgo-Hidalgo de Cisneros, Ignacio Naranjo-Rodriguez, Juan A. Muñoz-Leyva, Juan M. Barberá-Salvador
Publikováno v:
Mikrochimica Acta. 132:7-11
A zeolite-modified carbon paste electrode (CPE) has been used for the determination of 4-nitrophenol by differential pulse voltammetry (DPV). The electrochemical reduction of 4-nitrophenol at −1.0 V is carried out in a Britton-Robinson medium at pH
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac1e52ed5897941e21382d69417859e6
https://doi.org/10.1007/pl00010076
https://doi.org/10.1007/pl00010076
Publikováno v:
Analytica Chimica Acta. 344:167-173
The electrochemical reduction of 2-nitrophenol at a bentonite-modified carbon paste electrode by rapid scan differential pulse voltammetry in a flow system is studied, and a method for the direct voltammetric determination in sea water is proposed. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb416ce5d63be689395ecb1f5922a516
https://doi.org/10.1016/s0003-2670(97)00043-3
https://doi.org/10.1016/s0003-2670(97)00043-3
Autor:
José Luis Hidalgo-Hidalgo de Cisneros, Juan A. Muñoz Leyva, Ignacio Naranjo Rodríguez, Manuel Barea Zamora, María P. Hernández-Artiga, Juan M. Barberá Salvador
Publikováno v:
Mikrochimica Acta. 126:87-92
A bentonite-modified carbon paste electrode has been applied to the determination of 2-nitrophenol by differential pulse voltammmetry. The electrochemical reduction of 2-nitrophenol at −0.8 V is carried out in an artificial sea water-formic acid/so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a99d495b09f0114f90106fbc21ffc98
https://doi.org/10.1007/bf01242667
https://doi.org/10.1007/bf01242667
Publikováno v:
The Analyst. 122:601-604
The electrochemical behaviour of some phenols (methyl-, chloro- and nitrophenols) included in the US Environmental Protection Agency List of Priority Pollutants at a bentonite-modified carbon paste electrode in a flow system was studied. A fixed prop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0f509e88ec881d59ce843f6911207b6
https://doi.org/10.1039/a606837e
https://doi.org/10.1039/a606837e
Publikováno v:
Mikrochimica Acta. 116:49-55
An indirect Spectrophotometric determination of carbonate is proposed. Dilute chloroform solutions of uranyl quinolin-8-olate are shaken with aqueous solutions of anion. The decoloration produced by ligand exchange varies linearly with the anion conc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::543be3faddef0654c4d25587f293783f
https://doi.org/10.1007/bf01244062
https://doi.org/10.1007/bf01244062
Publikováno v:
The Analyst. 117:963-966
A method for the determination of the total content of Fe, Cu, Pb and Cr in used lubricating oils from marine engines by flame atomic absorption spectrometry is described. The influence of the sample basicity, the addition of acids, and dilution with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70d9c4f79ceb2f715a520251daca8784
https://doi.org/10.1039/an9921700963
https://doi.org/10.1039/an9921700963
Publikováno v:
The Analyst. 120:485
A modification of the IP 276-83–ASTM D2896-92 standardized method for the determination of the total base number of petroleum products is described. This method allows this determination in used lubricating oils from marine engines, which was not p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::257d57a6104a81913b110def8add7bee
https://doi.org/10.1039/an9952000485
https://doi.org/10.1039/an9952000485
Autor:
Antonio J. Fraidías Becerra, Juan A. Muñoz Leyva, Daniel García Gómez de Barreda, José Luis Hidalgo-Hidalgo de Cisneros
Publikováno v:
The Analyst. 118:175
Two sensors have been suggested for formic acid vapour. These sensors are based on piezoelectric crystals coated, by immersion, with films of 4-ethyl-3-thiosemicarbazide and 2,6-diacetylpyridine. The sensors have been perfected using a new static sys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b64f66d45370509aa534b030d51a95c
https://doi.org/10.1039/an9931800175
https://doi.org/10.1039/an9931800175
Publikováno v:
Mikrochimica Acta. 85:77-86
A spectrophotometric method for the determination of iron is described. The green Fe(II) complex is formed at pH 4.8 in a medium containing 40% dimethylformamide and 0.8 g/l ascorbic acid, and the absorbance is measured at 635 nm. The molar absorptiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af54ae9783b715255e8752588049e6f9
https://doi.org/10.1007/bf01199930
https://doi.org/10.1007/bf01199930
Publikováno v:
The Analyst. 109:1047
A method for the spectrophotometric determination of cobalt with cyclohexane-1,2-dione bis(2-pyridylhydrazone) is described. The pink complex is formed at an initial pH of 4–5 in a medium containing 12%V/V dimethylformamide, and the absorbance is m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54531eaf9c6fa503a48e03fdb71b5be4
https://doi.org/10.1039/an9840901047
https://doi.org/10.1039/an9840901047