ArticleACS omega2025
Analytical Development for Detecting Femtomole-Level Organophosphorus Compounds in Biogeochemical Samples by Ion Chromatography/High-Resolution Mass Spectrometry.
Article in ACS omega, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
Phosphorus (P) is a crucial element for life, and its organic forms play a central role in modern biology. Therefore, the analysis of their presence in environmental samples is important for evaluating the biogeochemistry of P and the P cycle on the Earth. Herein, we developed a high-sensitivity, high-resolution analytical technique for detecting organophosphorus compounds using ion chromatography (IC) with Orbitrap-mass spectrometry (Orbitrap-MS). The IC method clearly separated organophosphorus compounds, including alkyl phosphonates and alkyl phosphates, from other organic molecules and inorganic ions. The online combination of IC and Orbitrap-MS enabled the quantification of organophosphorus compounds with concentrations as low as ∼10 fmol and their molecular identification in the presence of various interfering organic substances. The feasibility of the developed and optimized IC-Orbitrap-MS method was confirmed by analyzing deep-sea sediments obtained from 343 m below the seafloor. This developed analytical technique can also be applied to biogeochemical and astrochemical molecular surveys of organophosphorus compounds in natural environments.
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