Screening for Bisphenol Chemicals: A Strategy Based on Dansyl Chloride Derivatizatio n Coupled with In-Source Fragmentation by High-Resolution Mass Spectrometry.
Sign Up to like & getrecommendations! Published in 2023 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.2c03461
Abstract: Bisphenol chemicals (BPs) represent a complexity of halogenated and nonhalogenated substances sharing a common structure of two phenol functionalities, some of which exhibit ubiquitous environmental distributions and endocrine-disrupting activities. However, environmental monitoring of complex BP-like… read more here.
Keywords: source fragmentation; bisphenol chemicals; strategy; strategy based ... See more keywords
Nonenzymatic Posttranslational Modifications and Peptide Cleavages Observed in Peptide Epimers.
Sign Up to like & getrecommendations! Published in 2023 at "Journal of the American Society for Mass Spectrometry"
DOI: 10.1021/jasms.3c00092
Abstract: Posttranslational modifications (PTMs) play vital roles in cellular homeostasis and are implicated in various pathological conditions. This work uses two ion mobility spectrometry-mass spectrometry (IMS-MS) modalities, drift-tube IMS (DT-IMS) and trapped IMS (TIMS), to characterize… read more here.
Keywords: source fragmentation; posttranslational modifications; isomerization; source ... See more keywords
Atomistic simulations for investigation of substrate effects on lipid in-source fragmentation in secondary ion mass spectrometry.
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DOI: 10.1116/6.0002298
Abstract: In beam-based ionization methods, the substrate plays an important role on the desorption mechanism of molecules from surfaces. Both the specific orientation that a molecule adopts at a surface and the strength of the molecule-surface… read more here.
Keywords: source fragmentation; atomistic simulations; molecule; ion ... See more keywords
Spontaneous In-Source Fragmentation Reaction Mechanism and Highly Sensitive Analysis of Dicofol by Electrospray Ionization Mass Spectrometry
Sign Up to like & getrecommendations! Published in 2023 at "Molecules"
DOI: 10.3390/molecules28093765
Abstract: Although dicofol has been widely banned all over the world as a kind of organochlorine contaminant, it still exists in the environment. This study developed a high-performance liquid chromatography coupled with mass spectrometry (HPLC-MS/MS) detection… read more here.
Keywords: dicofol; source; source fragmentation; mass spectrometry ... See more keywords