Dispersive micro-solid-phase extraction using chitosan/polymethacrylate/clay bionanocomposite followed by UV-Vis spectrophotometry for determination of zinc

ERTUĞRUL UYGUN H. D., Antep M., Demir M. N., MERDİVAN M.

CHEMICAL PAPERS, cilt.74, sa.10, ss.3399-3408, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 74 Sayı: 10
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1007/s11696-020-01169-3
  • Dergi Adı: CHEMICAL PAPERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core
  • Sayfa Sayıları: ss.3399-3408
  • Anahtar Kelimeler: Zinc, Bionanocomposite, D-mu-SPE method, UV-visible spectrophotometry, LIQUID-LIQUID MICROEXTRACTION, CLOUD POINT EXTRACTION, X-RAY-FLUORESCENCE, WATER SAMPLES, CARBON NANOTUBES, TRACE, ADSORPTION, SEPARATION, REMOVAL, ZN(II)
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

A novel chitosan-poly(methacrylate)-clay (CTS-pHEMA-MMT) superabsorbent bionanocomposite was prepared by radical copolymerization method and characterized by Fourier-transform infrared spectroscopy, thermal gravimetric analysis, X-ray diffraction analysis and scanning electron microscopy. The CTS-pHEMA-MMT composite was applied as a sorbent in dispersive micro-solid-phase extraction (D-mu-SPE) of zinc before its spectrophotometric determination after eluting with 4-(2-pyridylazo) resorcinol solution. Under the optimized experimental conditions, the developed D-mu-SPE method with aqueous standard Zn solutions presented a linear working range from 10 to 1000 ng mL(-1) with a correlation coefficient of 0.996, a detection limit of 3.1 ng mL(-1) and a relative standard deviation better than 3.5% (n = 5) for 10 ng mL(-1) and 50 ng mL(-1) of Zn(II). The preconcentration factor and the sorption capacity of the synthesized sorbent for zinc were 100 and 5.04 mg g(-1), respectively. The recoveries for zinc in tap water, drinking water, milk, butter, and vitamin tablet samples were obtained in the range of 93.7-102.5% for spiked 10 ng mL(-1) and 50 ng mL(-1) of Zn(II).