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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…
Matthew Beckner, Anne Dailly
Hydrogen adsorption isotherms were measured at ambient temperature to pressures exceeding 300 bar for three benchmark adsorbents: two metal-organic frameworks, Cu 3 (btc) 2 (btc = 1,3,5-benzenetricarboxylate) and Zn 4 O(btb) 2 (btb = 1,3,5-benzenetribenzoate)…
Lars Wilhelm, Martin Nitschke, Markus Meier, Reinhard Vonthein, Jan Kramer
Background: Determination of cyclosporine A (CsA) and tacrolimus (Tac) in dried blood spots (DBS) could enable drug monitoring in transplanted patients without the necessity of having to take venous blood samples. Therefore, we have developed a method for qua…
Hiroko Tominaga, Tomoe Ishihara, A. K. M. Azad Shah, Rumiko Shimizu, Arnold N. Onyango, Hideyuki Ito, Toshinori Suzuki, Yasuhiro Kondo, Hiroshi Koaze, Koretaro Takahashi, Naomichi Baba
New ionization and detection techniques in mass spectrometry have been successfully applied for efficient analyses of complex biological systems. It is, however, still difficult to trace structural changes of a specific molecular species in such systems. In t…
Héctor Hernández-Mendoza, Marcos Mejuto, Ana Isabel Cardona, Avelino García-Álvarez, Rocio Millán, Abel Yllera
In this work, a method for quantification of heavy metals Inductively Coupled Plasma Sector Field Mass Spectrometry (ICP-SFMS) in soil samples of El Bierzo district (Spain) has been optimized and validated. Optimization was carried out for elements: Cr, Mn, C…
David Z. Piper, Michael Bau
The concentrations of the rare earth elements (REE) in surface waters and sediments, when normalized on an element-by-element basis to one of several rock standards and plotted versus atomic number, yield curves that reveal their partitioning between differen…
Jean Philippe Marden, Corine Bayourthe, Eric Auclair, Raymond Moncoulon
The objective of this study was to evaluate the capacity of the live yeast (LY) Saccharomyces cerevisiae in optimizing ruminal pH and in understanding its mode of action during induced acidosis in dairy cow. Two non-lactating cannulated cows were used and off…
Shawn Swavey, David Fresh
Edge plane pyrolytic graphite (EPG) electrodes coated with the Co(II)/Pt(II) 2 analog of 5,15-bis-(4-pyridyl)-10,20-bis-(3-methoxy-4-hydroxyphenyl)porphyrin undergo an electrochemical-chemical-electrochemical (ECE) reaction when anodically scanned in 1.0 M su…
Anna Maria Michałowska-Kaczmarczyk, Tadeusz Michałowski
In this paper, it is proved that linear combination 2· f (O) － f (H) of elemental balances: f (O) for O and f (H) for H is linearly independent on charge and elemental/core balances for all redox systems of any degree of complexity; it is the pr imary form of…
Kaliyaperumal Logaranjan, Thiyagarajan Devasena, Kannaiyan Pandian
We have developed a novel methodology for the determination of Aloin s A and B in Aloe vera plant extract and com mercial Aloe vera product formulations using HPLC method. The result shows good sensitivity and accuracy which can be utilized for the scientific…
Dalany Menezes Oliveira, Edmar Clemente, Marcos Rodrigues Amorim Afonso, José Maria Correia da Costa
The objective of this study was to determine adsorption isotherms and hygroscopic behavior of lyophilized powder from grugru palm. The powders of grugru palm were obtained by lyophilization process without maltodextrin (T1) and with 8% matodextrin (T2). The e…
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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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