A synthesized ternary polymer composite and its use for SPE of trace metals in Coffee, tea and legumes

Daşbaşı T. , Soykan C.

FOOD CHEMISTRY, vol.365, no.130518, pp.1-8, 2021 (Journal Indexed in SCI Expanded)

  • Publication Type: Article / Article
  • Volume: 365 Issue: 130518
  • Publication Date: 2021
  • Doi Number: 10.1016/j.foodchem.2021.130518
  • Title of Journal : FOOD CHEMISTRY
  • Page Numbers: pp.1-8


A new synthesized ternary polymer composite, polystyrene/polyacrylonitrile/polyindole (PSt/PAN/PIN), was used as an adsorbent. The structure of synthesized composite was supported by FTIR, BET, X-RD, TGA, SEM and AFM technique. A SPE method with synthesized composite was developed for the preconcentration of chromium, copper, iron, manganese, lead and zinc ions. The adsorption capacity were found in the range of 37.4–56.7 mg g− 1 . Under the best conditions, the preconcentration factor of method was found as 100. Relative standard deviation was found at ≤ 3.3% (n = 11). The detection limits of analytes were obtained as: 0.9 μg L− 1 for Cr(III), 1.2 μg L− 1 for Cu(II), 2.0 μg L− 1 for Fe(III), 1.4 μg L− 1 for Mn(II), 0.9 μg L− 1 for Pb(II) and 2.0 µg L− 1 for Zn(II). Firstly, this SPE method was applied to certified reference material, and than coffee, tea, legumes. The trace metals was analyzed by flame atomic absorption spectrometry.