Turning cork by-products into smart and green materials for solid-phase extraction - gas chromatography tandem mass spectrometry analysis of fungicides in water

• Tipo: Artigo em Revista Científica Internacional
• Data: 2020

Autores

Celeiro, M (Autor) Outra; Vazquez, L (Autor) Outra; Sergazina, M (Autor) Outra; Docampo, S (Autor) Outra; Dagnac, T (Autor) Outra; Vitor Vilar (Autor) FEUP; Llompart, M (Autor) Outra

Revista

Título: Journal of Chromatography A

Vol. 1628

ISSN: 0021-9673

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 1 Citação

Outras Informações

ID Authenticus: P-00S-J1W

DOI: 10.1016/j.chroma.2020.461437

Abstract (EN): During stoppers production, large amounts of cork by-products (CBPs) are generated, being used as low value material. This project aims to turn CBPs into smart, natural and sustainable materials (sorbent) for solid-phase extraction (SPE) of pesticides from water. The study describes the use of CBPs for the extraction of 17 fungicides (metalaxyl, cyprodinil, tolylfluanid, procymidone, folpet, fludioxonil, myclobutanil, kresoxim methyl, iprovalicarb, benalaxyl, trifloxystrobin, fenhexamid, tebuconazole, iprodione, pyraclostrobin, azoxystrobin and dimethomorph) followed by gas chromatography-tandem mass spectrometry (GC-MS/MS) analysis. The most critical parameters affecting SPE were optimized by experimental design methodology. Under the optimal conditions, the method was successfully validated in terms of linearity, repeatability, and intermediate precision. Fungicide recovery was assessed in different real water samples including river, fountain, rainwater and spring water at 3 concentration levels (0.1, 0.5 and 10 mu g L-1). Recoveries ranged between 70-118% with RSD values lower than 20%, and matrix effects were not observed. Finally, the method was applied to samples from irrigation, rain, and river water, all collected in vineyards areas, revealing the presence of 10 of the 17 fungicides, at concentration up to hundreds of mu g L-1. The use of CBPs seems to be a promising low-cost and ecofriendly alternative to be employed as sorbent in SPE techniques to extract fungicides from the aquatic environment.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11