TY - JOUR

T1 - An automated magnetic dispersive micro-solid phase extraction in a fluidized reactor for the determination of fluoroquinolones in baby food samples

AU - Вах, Кристина

AU - Булатов, Андрей Васильевич

AU - Осмоловская, Ольга Михайловна

AU - Постнов, Виктор Николаевич

AU - Лебединец, Софья Андреевна

AU - Альабуд, Марсель

AU - Королев, Д.

AU - Москвин, Леонид Николаевич

N1 - Funding Information: Christina Vakh thanks the Russian Foundation for Basic Research (research projects No. 16-33-60137 mol_a_dk ) and St. Petersburg State University (grant No. 12.42.734.2017 ). Andrey Bulatov thanks the Russian Government (project no. MD-6597.2016.3 ). Scientific research was performed at the Centre for chemical analysis and materials research, the Educational resource centre of research park, the Centre for innovative technologies of composite nanomaterials, the Centre for Nanotechnology, and Centre of X-ray Diffraction Studies of St. Petersburg State University Research park. Appendix A

PY - 2018/2/25

Y1 - 2018/2/25

N2 - An automated magnetic dispersive micro-solid phase extraction procedure in a fluidized reactor was developed for the determination of fluoroquinolone antimicrobial drugs (fleroxacin, norfloxacin and ofloxacin) in meat-based baby food samples. A stepwise injection system was successfully combined with afluidized reactorand applied for the magnetic dispersive micro-solid phase extraction procedure automation. The developed automated procedure involved injection of the sample solution into the fluidized reactor followed by the on-line separation of the analytes from the sample matrix based on fluidized beds strategy using magnetic nanoparticles, elution and determination of the analytes using a high performance liquid chromatography system with fluorescence detection. The floating of the magnetic nanoparticles in a liquid sample phase was accomplished by air-bubbling. In the developed method Zr-Fe-C magnetic nanoparticles were used as an efficient sorbent for the determination of fleroxacin, norfloxacin and ofloxacin. Under the optimal conditions, the calibration graphs were linear over the concentration ranges of 10–1000 μg L −1 for fleroxacin (R 2 = 0.996), 5–1000 μg L −1for norfloxacin (R 2 = 0.998) and ofloxacin (R 2 = 0.998). The limits of detection, calculated from the blank tests based on 3σ, were 3.0 μg L −1forfleroxacin, 1.5 μg L −1for norfloxacin and ofloxacin. The limits of quantification, calculated from the blank tests based on 10σ, were 10 μg L −1 forfleroxacin, 5 μg L −1for norfloxacin and ofloxacin. The method was applied for the determination of fluoroquinolonesin meat-based baby food samples and the results were compared with those obtained by the reference method. The recovery values for all analytes were within of 86–122% range.

AB - An automated magnetic dispersive micro-solid phase extraction procedure in a fluidized reactor was developed for the determination of fluoroquinolone antimicrobial drugs (fleroxacin, norfloxacin and ofloxacin) in meat-based baby food samples. A stepwise injection system was successfully combined with afluidized reactorand applied for the magnetic dispersive micro-solid phase extraction procedure automation. The developed automated procedure involved injection of the sample solution into the fluidized reactor followed by the on-line separation of the analytes from the sample matrix based on fluidized beds strategy using magnetic nanoparticles, elution and determination of the analytes using a high performance liquid chromatography system with fluorescence detection. The floating of the magnetic nanoparticles in a liquid sample phase was accomplished by air-bubbling. In the developed method Zr-Fe-C magnetic nanoparticles were used as an efficient sorbent for the determination of fleroxacin, norfloxacin and ofloxacin. Under the optimal conditions, the calibration graphs were linear over the concentration ranges of 10–1000 μg L −1 for fleroxacin (R 2 = 0.996), 5–1000 μg L −1for norfloxacin (R 2 = 0.998) and ofloxacin (R 2 = 0.998). The limits of detection, calculated from the blank tests based on 3σ, were 3.0 μg L −1forfleroxacin, 1.5 μg L −1for norfloxacin and ofloxacin. The limits of quantification, calculated from the blank tests based on 10σ, were 10 μg L −1 forfleroxacin, 5 μg L −1for norfloxacin and ofloxacin. The method was applied for the determination of fluoroquinolonesin meat-based baby food samples and the results were compared with those obtained by the reference method. The recovery values for all analytes were within of 86–122% range.

KW - Baby food

KW - Flow analysis

KW - Fluidized beds strategy

KW - Fluoroquinolones

KW - Magnetic dispersive micro-solid phase extraction

KW - Stepwise injection analysis

UR - http://www.scopus.com/inward/record.url?scp=85037741460&partnerID=8YFLogxK

U2 - 10.1016/j.aca.2017.11.065

DO - 10.1016/j.aca.2017.11.065

M3 - Article

VL - 1001

SP - 59

EP - 69

JO - Analytica Chimica Acta

JF - Analytica Chimica Acta

SN - 0003-2670

ER -