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American Journal of Analytical Chemistry is a peer reviewed international journal dedicated to the latest advancement in analytical chemistry. The goal of this journal is to keep a record of the state-of-the-art research and to promote study, research and improvement within its various specialties. All manuscripts sub…
Zhiguo Hou, Bingmei Chen, Jing Lan, Yueman Liu, Xiaoping Xu, James Yu Gu, Junjie Gu
Plackett-Burman design and response surface methodology w ere applied in order to optimize the fermentation medium of (R)-α-hydroxyphenylacetic acid ((R)-HPA) producing Bacillus sp. HZG-19. The factors playing important roles in the production of (R)-HPA were…
Wendy Rondón, David Freire, Zully de Benzo, Angela B. Sifontes, Yorbin González, Maribel Valero, Joaquín L. Brito
This work consists in the use of a 3A zeolite (K-LTA) obtained by a process of exchange of sodium for potassium (4A zeolite), synthesized from Venezuelan kaolin for the removal of Pb (II) ions from aqueous solutions by batch process mode in order to consider…
Sheriban Ramani, Biserka Raspor, Tahir Arbneshi
The complexation of Cd with cysteine has been investigated at pH ~9, and in constant ionic medium 0.59 M NaNO 3 and borate buffer. Reduction signals of the hydrated Cd 2+ and Cd-cysteinate complex were resolved on the potential scale during amperometric titra…
Leonard J. Soltzberg, Sarah Flynn, Vera Kirch, Richard Newman
The fingerprint character and high sensitivity of 3D UV-vis fluorescence spectra offer special advantages for identifica tion of dyes in a museum or forensic setting. However, the extraction process is likely to affect the pH of the medium and, in some cases,…
Jasmin Shah, M. Rasul Jan, Inayat Ullah, Sultan Shah
A sensitive spectrofluorimetric method was developed for determination of ciprofloxacin (CPFX), levofloxacin (LEV), gatifloxacin (GAT) and moxifloxacin (MOX) in pure, commercial formulations, human urine and plasma. The method is based on charge-transfer (CT)…
Joseph Jones, Mary Jones, Charles Plate, Douglas Lewis
Marijuana use as well as abuse is a significant public health and public safety concern in the United States and using hair to identify marijuana users and abusers has been gaining acceptance in a number of venues including workplace, court ordered, and subst…
Friedemann Call, Martin Roeb, Martin Schmücker, Hélène Bru, Daniel Curulla-Ferre, Christian Sattler, Robert Pitz-Paal
Developing an efficient redox material is crucial for thermochemical cycles that produce solar fuels (e.g. H 2 and CO), enabling a sustainable energy supply. In this study, zirconia-doped cerium oxide (Ce 1- x Zr x O 2 ) was tested in CO 2 -split ting cycles…
Andrzej Burewicz, Hazem Dawoud, Lu-Lin Jiang, Tadeusz Malinski
The cytoprotective messenger nitric oxide (NO) and cytotoxic peroxynitrite (ONOO - ) are the main components of oxi dative stress and can be generated by endothelial cells. A tandem of electrochemical nanosensors (diameter 200 - 300 nm) were used to measure,…
Perumal Subramaniam, Natesan Thamil Selvi
The co-oxidation of a mixture of phenylsulfinylacetic acid (PSAA) and oxalic acid (OxH 2 ) by Cr(VI) in 20% aceto n i trile - 80% water (v/v) medium follows third order kinetics, first order , each with respect to PSAA, OxH 2 and Cr(VI). The reaction involves…
Lucia Coppo, Raffaella Priora, Sonia Salzano, Pietro Ghezzi, Paolo Di Simplicio
The redox state of cellular thiols is widely studied because it was recently linked to many different diseases and pa thologies. In this work we quantified the concentrations of protein disulfides (PSSP) and thiol-protein mixed disulfides (XSSP) in rat tissue…
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American Journal of Analytical Chemistry is a peer reviewed international journal dedicated to the latest advancement in analytical chemistry. The goal of this journal is to keep a record of the state-of-the-art research and to promote study, research and improvement within its various specialties. All manuscripts sub… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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