A "half" core-shell magnetic nanohybrid composed of zeolitic imidazolate framework and graphitic carbon nitride for magnetic solid-phase extraction of sulfonylurea herbicides from water samples followed by LC-MS/MS detection

Qi Y., Wan M., El-Aty A. M. A., Li H., Cao L., She Y., ...Daha Fazla

MICROCHIMICA ACTA, cilt.187, sa.5, 2020 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 187 Sayı: 5
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1007/s00604-020-04243-5
  • Dergi Adı: MICROCHIMICA ACTA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Analytical Abstracts, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, EMBASE, Food Science & Technology Abstracts, MEDLINE, Metadex, Pollution Abstracts, Civil Engineering Abstracts
  • Anahtar Kelimeler: In situ growth, Zeolitic imidazolate frameworks-8, Graphitic carbon nitride nanosheets, Sulfonylurea herbicides, Magnetic solid-phase extraction, LIQUID-CHROMATOGRAPHY, ENVIRONMENTAL WATER, METHYL HERBICIDE, GRAIN SAMPLES, ADSORPTION, NANOTUBES, SURFACE, SILICA
  • Atatürk Üniversitesi Adresli: Evet

Özet

A "half" core-shell g-C3N4/Fe3O4@ZIF-8 nanohybrid, in which Fe3O4 and zeolite imidazolate framework-8 (ZIF-8) constructed the core-shell structure, was successfully fabricated via a versatile in situ growth strategy. This nanohybrid was employed for simultaneous magnetic solid-phase extraction (MSPE) of trace levels of fifteen target sulfonylurea herbicides (SUHs) in environmental water samples followed by LC-MS/MS detection. C3N4 nanosheets were first prepared by liquid exfoliation of bulk g-C3N4, after which Fe3O4 nanoparticles were uniformly deposited onto the surface of C3N4 nanosheets, and ZIF-8 nanoparticles were grown on the surface of g-C3N4/Fe3O4 by anchoring Zn2+ on g-C3N4/Fe3O4. Owing to the synergistic effect, the hybridization of C3N4 and ZIF-8 endowed the nanohybrid with higher multi-target adsorption ability for SUHs compared to pure C3N4 or ZIF-8. The separation as well as the enrichment processes were facilitated using Fe3O4 as a magnetic core. The influence of various parameters on MSPE efficiency, including adsorbent dosage, extraction time, solution pH, and desorption solvent and its volume, was investigated in detail. Under optimal conditions, the MSPE coupled with LC-MS/MS exhibited good linearity ranging from 0.5 to 100 mu g L-1 with correlation coefficients (R-2) >= 0.9919, high sensitivity with low limits of detection (LODs) of 0.005-0.141 mu g L-1 and satisfactory recoveries of 67.4-105.5% with relative standard deviations (RSDs) < 9.8%. These results indicate that this method is reliable for the determination of SUHs in different matrices and the in situ growth strategy is a promising approach for constructing effective adsorbents.