Greener production of a starch-based nanohybrid material (core-shell) for the simultaneous extraction of persistent organic pollutants in shrimp samples.

Autor: de Jesus JR; Research Laboratory in bionanomaterials, LPbio, Department of Chemistry, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil; Department of Chemistry, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil. Electronic address: jemmyson.jesus@ufv.br., Alfredo LHM; Research Laboratory in bionanomaterials, LPbio, Department of Chemistry, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., de Carvalho JP; Research Laboratory in bionanomaterials, LPbio, Department of Chemistry, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., de Jesus CBR; Department of Physics, Universidade Federal de Sergipe, Itabaiana, Sergipe, Brazil., Moreira Novaes FJ; Department of Chemistry, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., de Queiroz MELR; Department of Chemistry, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil., Garcia PT; Faculty of Chemistry, Universidade Federal do Sul e Sudeste do Pará, Marabá, Pará, Brazil.
Jazyk: angličtina
Zdroj: Journal of chromatography. A [J Chromatogr A] 2023 Nov 22; Vol. 1711, pp. 464466. Date of Electronic Publication: 2023 Oct 18.
DOI: 10.1016/j.chroma.2023.464466
Abstrakt: Here, a novel nanohybrid material (Ag@CD@ANS) based on oat starch was produced, characterized, and applied to extract persistent organic pollutants in a shrimp sample. By the characterization experiments, Ag@CD@ANS was successfully synthesized. The functionalization of the material by 1,2-naphthoquinone-4-sulphonic acid (ANS) was confirmed using the infrared technique and CHN elemental analysis. The isotherm study showed that the material has a high adsorption capacity for the pesticides of interest (flutriafol, atrazine, heptachlor, DDT and bifenthrin) allowing their extraction from shrimp samples. The optimal condition for extraction was obtained using multivariate analysis. The nature of the elution solvent (hexane, methanol, acetonitrile) and the mass ratio between sample:adsorbent (1:1; 1:5 and 1:10) were the evaluated factors for extraction using Ag@CD@ANS and commercial adsorbents (neutral alumina, octadecyl, silica gel). From the multivariate analysis, it was observed that the optimal condition for pesticide extraction using Ag@CD@ANS was reached, using a 1:5 ratio (sample:adsorbent) and acetonitrile (10 mL) as elution solvent. For the commercial adsorbents, the optimal condition for pesticide extraction was reached, using a 1:3 ratio (sample:adsorbent), acetonitrile (10 mL) and neutral alumina as commercial adsorbent. Ag@CD@ANS efficiency was compared with an optimal commercial adsorbent (neutral alumina). No significant difference (p < 0.05) between neutral alumina and Ag@CD@ANS was observed. Recoveries ranging from 75 to 105 % with coefficients of variation ≤ 15 % (n = 3) were obtained using neutral alumina while using Ag@CD@ANS, recoveries ranging from 73 to 102 %, with coefficient of variation ≤ 13 % (n = 3) were obtained for the target pesticides. Limits of detection ranging from 0.5 to 1.0 µg Kg -1 and limits of quantification ranging from 1.6 to 3.3 µg Kg -1 were reached. The results demonstrated that Ag@CD@ANS can alternatively be used as a support for the extraction of persistent organic pollutants, having the advantage of being reusable for up to three cycles.
Competing Interests: Declaration of Competing Interest The authors declare that there is no competing interest (financial or personal) that could influence the data reported in this work.
(Copyright © 2023 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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