Results 1 to 10 of about 141,863 (280)
The Use of Polydialkylsiloxanes/Triflic Acid as Derivatization Agents in the Analysis of Sulfur-Containing Aromatics by “Soft”-Ionization Mass Spectrometry [PDF]
Molecules, 2022 Polycyclic aromatic sulfur-containing compounds are widely distributed in oil, especially in its low-volatile and heavy fractions (resins, asphaltenes), and this dictates the need for their determination when reliable methods for sulfur removing ...
Zhanna Starkova +9 more
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In-Needle Pre-Column Derivatization for Amino Acid Quantification (iPDAQ) Using HPLC
Metabolites, 2022 Pre-column fluorescent derivatization has been used for the fast quantification of amino acids using high-performance liquid chromatography (HPLC) systems.
Yuki Soma +11 more
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Fluorimetric Analysis of Five Amino Acids in Chocolate: Development and Validation
Molecules, 2021 Amino acids present ergogenic action, helping to increase, protect, and restore the muscular system of young athletes. Moreover, the encapsulation of five relevant amino acids in chocolate pellet form will appeal to them, facilitating their daily ...
Maria S. Synaridou +5 more
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Quantification of Intracellular Thiols by HPLC-Fluorescence Detection
Molecules, 2021 Biothiols, such as cysteine and glutathione, play important roles in various intracellular reactions represented by the redox equilibrium against oxidative stress.
Hiroki Yamamoto +3 more
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Molecules, 2023 Quinones are frequently used as derivatization reagents in HPLC analysis to improve detection sensitivity. In the present study, a simple, sensitive, and selective chemiluminescence (CL) derivatization strategy for biogenic amines, prior to their HPLC-CL
Naoya Kishikawa +4 more
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Molecules, 2021 Cerebrospinal fluid is a key biological fluid for the investigation of new potential biomarkers of central nervous system diseases. Gas chromatography coupled to mass-selective detectors can be used for this investigation at the stages of metabolic ...
Alisa Pautova +2 more
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An optimized analytical method for the simultaneous detection of iodoform, iodoacetic acid, and other trihalomethanes and haloacetic acids in drinking water [PDF]
, 2013 An optimized method is presented using liquid-liquid extraction and derivatization for the extraction of iodoacetic acid (IAA) and other haloacetic acids (HAA9) and direct extraction of iodoform (IF) and other trihalomethanes (THM4) from drinking water ...
He, G +6 more
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International Journal of Neonatal Screening, 2021 To minimize false-positive cases in newborn screening by tandem mass spectrometry in Japan, practical second-tier liquid chromatography-tandem mass spectrometry analyses have been developed using a multimode ODS column with a single set of mobile phases ...
Yosuke Shigematsu +4 more
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Molecules, 2020 In leathers, formaldehyde is currently analyzed according to EN ISO 17226-1 standard, by reversed phase liquid chromatography after off-line precolumn derivatization with 2,4 dinitrophenylhydrazine (DNPH) in strong acidic conditions. We first demonstrate
Caroline Bourgeois +3 more
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Frontiers in Chemistry, 2022 Matrine is an alkaloid extracted from traditional Chinese herbs including Sophora flavescentis, Sophora alopecuroides, Sophora root, etc. It has the dual advantages of traditional Chinese herbs and chemotherapy drugs.
Xiao-Ying Sun +20 more
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