Zobrazeno 1 - 10
of 133
pro vyhledávání: '"Constantinos K. Zacharis"'
Autor:
Alexandros Kavrentzos, Elli Vastardi, Evangelos Karavas, Paraskevas D. Tzanavaras, Constantinos K. Zacharis
Publikováno v:
Pharmaceuticals, Vol 17, Iss 4, p 422 (2024)
Herein, a sensitive and selective gas chromatography-electron capture detector (GC-ECD) method was developed and validated for the quantification of trace levels of five bromo-containing genotoxic impurities in Febuxostat active pharmaceutical ingred
Externí odkaz:
https://doaj.org/article/ee4b5c9228e64a4db145711a4897533a
Publikováno v:
Chemosensors, Vol 11, Iss 12, p 577 (2023)
In the present study we report the development of an advantageous optical sensor for the speciation of Fe(III)/Fe(II). The sensor is based on the selective reaction of Fe(III) with a Desferal (Deferoxamine) reagent at pH = 2, while both Fe(III) and F
Externí odkaz:
https://doaj.org/article/a89e5c2c505b445199efeb75ac6ad76f
Publikováno v:
Molecules, Vol 28, Iss 17, p 6205 (2023)
A high-throughput fluorimetric assay for histidine was developed, using a 96-well plates platform. The analyte reacts selectively with o-phthalaldehyde under mild alkaline conditions to form a stable derivative. Instrumental-free detection was carrie
Externí odkaz:
https://doaj.org/article/1cbcfe7ca8a4446fa1d74b8c4d3fe9b3
Publikováno v:
Molecules, Vol 28, Iss 2, p 888 (2023)
In this communication, we describe the first analytical method for the determination of free histidine in hair care products (shampoos and conditioners). Cation-exchange chromatography combined with postcolumn derivatization and fluorimetric detectio
Externí odkaz:
https://doaj.org/article/1af7e3c437f844c18663153aaccf896b
Autor:
Evmorfia Asimakopoulou, Natalia Manousi, Nikoleta Anaxagorou, Abuzar Kabir, Kenneth G. Furton, Constantinos K. Zacharis
Publikováno v:
Chemosensors, Vol 10, Iss 12, p 537 (2022)
Herein, a fabric phase sorptive extraction-based scheme was reported for the determination of amphotericin B in human urine. The developed method allowed the direct extraction of the analyte from the biological matrix with improved selectivity, repea
Externí odkaz:
https://doaj.org/article/0ddece532e074eeda59e3b586a9f0eca
Autor:
Natalia Manousi, Anastasia Korpeti, Abuzar Kabir, Kenneth G. Furton, Constantinos K. Zacharis
Publikováno v:
Separations, Vol 9, Iss 12, p 433 (2022)
This article discusses the use of a sorbent-based microextraction technique employing a capsule device to isolate amphotericin B (AMB) from human serum before analysis by high performance liquid chromatography (HPLC). AMB is a macrocyclic compound us
Externí odkaz:
https://doaj.org/article/0f6b26cc3c454082b774c2ff2555e113
Autor:
Eleni Tsanaktsidou, Lamprini Kanata, Sofia Almpani, Constantinos K. Zacharis, Catherine K. Markopoulou
Publikováno v:
Separations, Vol 9, Iss 11, p 347 (2022)
In order to meet the analytical requirements of the European Medicines Agency (EMA), a new HPLC-FLD method was successfully developed using dansyl chloride for the derivatization and determination of the genotoxic impurities N-Nitrosodimethylamine (N
Externí odkaz:
https://doaj.org/article/64a2b1880b22428597ed8f99040be936
Autor:
Natalia Manousi, Christina Karavasili, Dimitrios G. Fatouros, Paraskevas D. Tzanavaras, Constantinos K. Zacharis
Publikováno v:
Pharmaceuticals, Vol 15, Iss 6, p 755 (2022)
Herein, a simple and rapid HPLC method for the determination of paracetamol milk-containing biorelevant media is proposed. The separation of the analyte from the milk-containing biorelevant media was accomplished isocratically using a mobile phase co
Externí odkaz:
https://doaj.org/article/3363e3ff2a8946ceb530c83f5c4df0c3
Publikováno v:
Applied Sciences, Vol 12, Iss 13, p 6658 (2022)
A salt-induced homogeneous liquid–liquid microextraction (SI-HLLME) protocol combined with high-performance liquid chromatography–diode array detection is presented for the first time for the determination of piroxicam and meloxicam in human urin
Externí odkaz:
https://doaj.org/article/59db98edd91a4b60a3e8f8aa254bdb85
Autor:
Kalliopi Papavasileiou, Apostolia Tsiasioti, Paraskevas D. Tzanavaras, Constantinos K. Zacharis
Publikováno v:
Molecules, Vol 27, Iss 11, p 3489 (2022)
In this study, the development, validation, and application of a new liquid chromatography post-column derivatization method for the determination of Colistin in human urine samples is demonstrated. Separation of Colistin was performed using a core
Externí odkaz:
https://doaj.org/article/17ed08ff836440c7a79e2c2b42a94c57