Daşbaşı T, Soykan C. A synthesized ternary polymer composite and its use for SPE of trace metals in Coffee, tea and legumes.
Food Chem 2021;
365:130518. [PMID:
34261008 DOI:
10.1016/j.foodchem.2021.130518]
[Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 06/18/2021] [Accepted: 06/30/2021] [Indexed: 10/21/2022]
Abstract
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.
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