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A Sensitive Online SPE-LC–APCI–MS/MS Method for Simultaneous Determination of 17 Nitrated and Oxygenated Polycyclic Aromatic Hydrocarbons in Atmospheric Particulate Matter
A highly sensitive method was developed for the determination of 17 nitrated and oxygenated polycyclic aromatic hydrocarbons (NPAHs and OPAHs) in PM 2.5...
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Multiple Response Optimization of an Ionic Liquid-DLLME and UHPLC-DAD Analysis of Five Coccidiostats in the Chicken Liver with LC–MS/MS Confirmation
Pharmaceutical residues in animal food products from various sources are a crucial concern regarding food safety measures for human welfare....
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Simultaneous Determination of Ruscogenin, Neoruscogenin, Trimebutin, and Parabens in Cream Formulation by Reverse Phase High Performance Liquid Chromatography
A simple and stability indicating reverse-phase high-performance liquid chromatographic method for the simultaneous analysis of ruscogenin,...
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Biosilica as a New Stationary Phase in HILIC Mode
The aim of this work was to use the biosilica obtained from diatoms (microalgae) cultivated under laboratory conditions as a new stationary phase to...
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Magnetic Metal–Organic Framework Material Synthesized by Molecular Imprinting Technology for Analysis of Bisphenol A
The use of plastic bags in the long-term contact with food may cause certain harm to human health due to the production process of plastic bags and...
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Study of Effect of Incubation Time and Temperature on the Linear Polyacrylamide-Coating Performance for the Separation of Proteins by Capillary Zone Electrophoresis
The preparation of linear polyacrylamide (LPA)-coated capillary is a multistep, laborious process. In this study, five different LPA-coating...
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Simultaneous Determination of Triterpenic Acids in Jujube Extract Using HPLC–UV Coupled with Multilayer Perceptron Networks
The three triterpenic acids, betulinic acid, oleanolic acid, and ursolic acid, are some of the prominent components with medicinal characteristics in...
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Comparative Study Between VWD and FLD Detector in HPLC System for Azoxystrobin Quantification in Water
In this study, the efficiency of two detectors—variable wavelength detector (VWD) and fluorescence detector (FLD)—in a liquid chromatograph to...
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Advancing Quality and Environmental Responsibility: A Stability-Indicating LC Method Development for Lenvatinib Through QbD and Green Chemistry
A Quality by Design (QbD) systematic and analytical approach was used to develop a novel and sensitive Lenvatinib stability-indicating method....
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Development and Validation for the Estimation of Assay and Forced Degradation Impurities of Goserelin Acetate Sustained-Release Implant Using HPLC and LC–MS
Forced degradation studies aim to systemically characterize the degradation products of an active pharmaceutical ingredient (API) and its...
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Preparation and Enantiomeric Separation of l-Pro-l-Phe-l-Val-l-Leu Peptide Stationary Phases
This study presents the development of three new chiral stationary phases. Three new peptide chiral stationary phases with a main chain of l- proline, l-...
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Two-Dimensional Liquid Chromatography–Mass Spectrometry: Heart-Cutting Hydrogen/Deuterium Exchange as a Tool for Small Molecule Structure Elucidation
High resolution and tandem mass spectrometry are popular techniques for the structure elucidation of small molecule impurities and metabolites....
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Characterization of Degradation Products and Drug–Excipient Interaction Products of Erdafitinib by LC–Q-TOF-MS/MS and NMR
Erdafitinib is a potent and selective tyrosine kinase receptor inhibitor used to treat advanced or metastatic urothelial carcinoma. The purpose of...
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Optimizing Solvents and Derivatizing Agents for Metabolomic Profiling of Human Plasma Using GC–MS
Metabolites provide a rich source of information regarding individual physiological states influenced by differences in diet, disease, health, and...
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Determination of Five Organochlorine Pesticides Based on GC–MS Coupled with Deep Eutectic Solvent-Modified Magnetic Graphene Oxide-Improved QuEChERS in Vegetables
A novel deep eutectic solvent-modified magnetic graphene oxide (DES@MGO) was first synthesized. The microscopic structure, composition, and property...
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Application of Diphenyl Functionalization of Nickel Foam as Dispersive Solid-Phase Extraction Adsorbent to Polycyclic Aromatic Hydrocarbon Contaminants in Chinese Herbal Medicines
A novel sorbent of diphenyl-functionalized nickel foam (NF-2Ph) was synthesized and used in the dispersive solid-phase extraction (DSPE) and gas...
