Research on determination of the trinitrotoluene in surface warter by solid-phase extraction with liquid chromatography quadrupole time-of-fly mass (UPLC-MS-QTOF)
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https://doi.org/10.54939/1859-1043.j.mst.VITTEP.2022.107-112Keywords:
Liquid mass chromatography method; Solid-phase extraction; Trinitrotoluene.Abstract
A highly specific and sensitive method for the detection of trinitrotoluene (TNT) using solid-phase extraction (SPE) with optimised Liquid Chromatography Quadrupole Time-of-Flight Mass Spectrometry (UPLC-QToF-MS) procedure has been developed. Two different SPE sorbents, C18 bonded silica (C18 Lichrolut RP-18) and divinylbenzene-N-vinylpyrrolidone (Oasis HLB) were compared. SPE-C18 provided the best results, yielding average recoveries higher than 90%. Detection limits of TNT provided by the proposed SPE-LC-QTOF-MS procedure were 0.21 ng/L.
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