Zobrazeno 1 - 10
of 135
pro vyhledávání: '"Leonardo Pezza"'
Autor:
Leonardo Pezza
Publikováno v:
Eclética Química, Vol 15, Iss 1, Pp 17-22 (2018)
Externí odkaz:
https://doaj.org/article/db76dcf44edb4e0586dd7586e3631645
Autor:
Leonardo Pezza
Publikováno v:
Eclética Química, Vol 14, Iss 1, Pp 27-37 (2018)
Externí odkaz:
https://doaj.org/article/af2cc33fb9ab4173b5cde79833cb7f0a
Autor:
Leonardo Pezza
Publikováno v:
Eclética Química, Vol 13, Iss 1, Pp 127-140 (2018)
Externí odkaz:
https://doaj.org/article/959a3f6c5a2a4e36b9c9b641fca8229a
Publikováno v:
Eclética Química, Vol 30, Iss 2, Pp 17-24 (2018)
This paper describes a method for quantitative spot test analysis of hydrochlorothiazide using diffuse reflectance spectroscopy. The reflectance measurements were performed analyzing the colored compound (l = 585 nm) produced from the reaction betwee
Externí odkaz:
https://doaj.org/article/cc4b261ed1a747ea8fc9ccb1fa330094
Autor:
E. G Ciapina, A. O. Santini, P. L. Weinert, M. A. Gotardo, Helena Redigolo Pezza, Leonardo Pezza
Publikováno v:
Eclética Química, Vol 30, Iss 1, Pp 29-36 (2018)
In this work, an effective and low-cost method for the determination of sodium or potassium diclofenac is proposed in its pure form and in their pharmaceutical preparations. The method is based on the reaction between diclofenac and tetrachloro-p-ben
Externí odkaz:
https://doaj.org/article/e78342cbe6ad4cffa0311934b19148c2
Publikováno v:
Eclética Química, Vol 35, Iss 3, Pp 179-188 (2018)
A simple, rapid and sensitive spectrophotometric method for the determination of captopril (CPT) in pharmaceutical formulations is proposed. This method is based on the reduction reaction of ammonium molybdate, in the presence of sulphuric acid, for
Externí odkaz:
https://doaj.org/article/b6e2f64b577c4c058815a50e4f564756
Autor:
José Luiz Rufino, Flávio Cesar Bedatty Fernandes, Mayara S. Ruy, Helena Redigolo Pezza, Leonardo Pezza
Publikováno v:
Eclética Química, Vol 35, Iss 4, Pp 139-145 (2018)
A simple, rapid, accurate and inexpensive spectrophotometric method for the determination of tetracycline and doxycycline has been developed. The method is based on the reaction between these drugs and chloramine-T in alkaline medium producing red co
Externí odkaz:
https://doaj.org/article/9888b7a379a643acb0201448a4b14c03
Publikováno v:
Eclética Química, Vol 40, Iss 1, Pp 133-140 (2018)
A clean environmental spectrophotometric method for the analysis of nitrite using a new diazotizing reagent is reported. The proposed method is based on diazotization-coupling reaction between dapsone, nitrite and (naphthyl)ethylenediamine (NED) in p
Externí odkaz:
https://doaj.org/article/846c70856a294a10a8fcf975090690bd
Autor:
Matthieu Tubino, A. C. Biondo, Marta Maria Duarte Carvalho Vila, Leonardo Pezza, Helena Redigolo Pezza
Publikováno v:
Eclética Química, Vol 35, Iss 1, Pp 41-46 (2018)
A qualitative spot-test and tandem quantitative analysis of dipyrone in the bulk drug and in pharmaceutical preparations is proposed. The formation of a reddish-violet color indicates a positive result. In sequence a quantitative procedure can be per
Externí odkaz:
https://doaj.org/article/4f2a244d712c42748292ea561786e557
Autor:
Mara Andréia Gotardo, Liliane Spazzapam Lima, Rodrigo Sequinel, José Luiz Rufino, Leonardo Pezza, Helena Redigolo Pezza
Publikováno v:
Eclética Química, Vol 33, Iss 3, Pp 07-12 (2018)
A simple, rapid and sensitive spectrophotometric method has been developed for the determination of methyldopa in pharmaceutical formulations. The method is based on the reaction between tetrachloro-p-benzoquinone (p-chloranil) and methyldopa, accele
Externí odkaz:
https://doaj.org/article/2803b6c25a41408cbdbf48c4758a7b20