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https://www.selleckchem.com/products/milademetan.html Novel restricted access molecularly imprinted nanomaterials (RAMIPs) were successfully prepared on the surface of metal-organic frameworks (NH2-MIL-125) by surface-initiated atom transfer radical polymerization (SI-ATRP) technology. Then it was applied as a solid phase extraction (SPE) material in analysis of quinolones in bovine serum by HPLC detection. NH2-MIL-125@RAMIPs was empolyed as a sorbent for gatifloxacin (GTFX) and the resulted material has a good binding amounts (86.1 mg g-1), rapid binding kinetic (36 min). The results indicated that the prepared NH2-MIL-125@RAMIPs possess excellent specific recognition for GTFX. Combined with high-performance liquid chromatography (HPLC), the SPE column filled with NH2-MIL-125@RAMIPs was applied to selectively enrich GTFX antibiotic from bovine serum. The recovery of GTFX is between 96.8% and 105.6%, with relative standard deviations of 1.7-3.2% (n = 3). The research results illustrate that the method is successfully applied to the selective enrichment of GTFX in bovine serum. It provides a simple and efficient method for the direct detection of GTFX in bovine serum.A quick and efficient method was optimized and validated to determine chlorpyrifos in biobeds using ultra-performance liquid chromatography coupled to tandem mass spectrometry (UPLC-MS/MS). Chlorpyrifos was extracted from the matrix with 30 mL of a mixture of acetone, phosphoric acid and water 9811 (v/v/v). After homogenization, centrifugation and filtration, 125 µL of the extract was evaporated and reconstituted in 5 mL of methanol acidified with 0.1% acetic acid. Validation was performed by studying analytical curve linearity (r2), estimated instrument and method limits of detection and limits of quantification (LODi, LODm, LOQi and LOQm, respectively), accuracy, precision (expressed as relative standard deviation, RSD), and matrix effect. Accuracy and precision were determined from the amount of pesti

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