ArticleRSC advances2025
Inner-wall biochar-coated pipette tip microextraction for rapid and sustainable determination of tyrosine kinase inhibitors in plasma.
Article in RSC advances, 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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Authors and funding
5 authors.
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Abstract
Tyrosine kinase inhibitors (TKIs) are critical in cancer therapy, but their clinical application is complicated by narrow therapeutic windows and significant interpatient variability in pharmacokinetics. To address this, this study presents an effective pipette-tip solid-phase microextraction (PT-μSPE) method using kapok fiber-derived biochar (KFB) as a green and cost-effective sorbent for the extraction of TKIs in plasma. The KFB was incorporated as an inner-wall coating within a standard pipette tip, minimizing backpressure and enhancing automation compatibility. This PT-μSPE method is optimized for efficiency and sensitivity, with ethanol used as the desorption solvent. The method is coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) for the determination of TKIs, demonstrating excellent linearity (
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Registered trials
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