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- W2567200049 abstract "In this study, a surface-coated wooden-tip electrospray ionization mass spectrometry (SCWT-ESI-MS) method was developed for rapid and sensitive analysis of trace fluoroquinolone and macrolide antibiotics in water. First, a SCWT solid-phase microextration (SPME) probe was prepared, via silanization and sulfonation for modification of a layer of adsorbent containing both C8-chain and sulfo group on the surface of wooden tips. Then, the SCWT-SPME probe was applied for extraction of trace fluoroquinolone and macrolide antibiotics in water. The specially designed adsorbent gave the probe desirable enrichment capacity towards fluoroquinolone and macrolide antibiotics, with enrichment factors of approximately 100-500 folds for six target analytes. After extraction, the loaded SCWT-SPME probe was directly applied for ambient MS analysis. With the application of a high voltage and some spray solvent on the SCWT-SPME probe, analytes enriched on the probe was desorbed and ionized for mass spectrometric analysis under ambient and open-air conditions. The method was sensitive, with limits of detection and quantification of 1.8-4.5 ng/L and 5.9-15.1 ng/L, respectively. The method also showed good linearity, with correlation coefficient values (r2) of no less than 0.9940 for six target analytes. The developed method was successfully applied for the analysis of six fluoroquinolone and macrolide antibiotics in tap and river water samples, and no antibiotic was found in tap water but some antibiotics were detected in river water with concentrations at dozens to hundreds nanogram-per-liter level. Standard addition experiments were also performed, and the obtained recoveries were 89-102% for tap waters and 82-92% for river waters, respectively. All the experimental results demonstrated that our proposed SCWT-ESI-MS method was rapid, sensitive, and reliable for analyzing trace antibiotics in water." @default.
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- W2567200049 date "2017-02-01" @default.
- W2567200049 modified "2023-10-16" @default.
- W2567200049 title "Surface-coated wooden-tip electrospray ionization mass spectrometry for determination of trace fluoroquinolone and macrolide antibiotics in water" @default.
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- W2567200049 doi "https://doi.org/10.1016/j.aca.2016.12.008" @default.
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