Abstract
A method is proposed for the highly sensitive determination of chloro- and nitrophenols in aqueous solutions, including the preconcentration of analytes on magnetic hydrophobized silica and their determination in the concentrate by liquid chromatography with mass spectrometric detection. The conditions for the determination of chloro- and nitrophenols by chromatography–mass-spectrometry are optimized, and conditions for the sorption preconcentration of phenols in the batch mode are selected. The calibration dependence is linear in the analyte concentration range 2–50 μg/L. The limits of detection for analytes by the proposed method are lower than the MPC of phenols in natural waters. The accuracy of the determination of phenols is confirmed by the analysis of natural water using the spike-recovery test.
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Translated by V. Kudrinskaya
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Karsakova, I.V., Frolova, A.I., Tikhomirova, T.I. et al. Determination of Phenols by Liquid Chromatography-Mass Spectrometry with Sorption Preconcentration on Magnetic Hydrophobized Silica. J Anal Chem 77, 1540–1546 (2022). https://doi.org/10.1134/S1061934822100070
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DOI: https://doi.org/10.1134/S1061934822100070