Quantification of a Sulfated Marine-Inspired Antifouling Compound in Several Aqueous Matrices: Biodegradation Studies and Leaching Assays from Polydimethylsiloxane Coatings

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

Vilas Boas, C (Autor) Outra; Goncalves, V (Autor) Outra; De Marco, P (Autor) Outra; Emilia Sousa (Autor) FFUP; Pinto, M (Autor) Outra; Silva, ER (Autor) Outra; Tiritan M.E. (Autor) FFUP; Marta Correia da Silva (Autor) FFUP

Revista

Título: Marine Drugs

Vol. 28

Página Final: 548

ISSN: 1660-3397

Editora: MDPI

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00X-88G

DOI: 10.3390/md20090548

Abstract (EN): The development of marine-inspired compounds as non-toxic antifouling (AF) agents has been pursued in the last years. Sulfur is the third most common element in seawater. Sulfur is present in oxygenated seawater as sulfate anion (SO42-), which is the most stable combination of sulfur in seawater, and several promising AF secondary metabolites with sulfate groups have been described. However, sulfated compounds proved to be an analytical challenge to quantify by HPLC. Taking these facts into consideration, this work presents the development and validation of a method for the quantification of gallic acid persulfate (GAP) in seawater and ultrapure water matrix, based on hydrophilic interaction liquid chromatography (HILIC). This method was used to evaluate GAP stability following several abiotic and biotic degradation assays, and to quantify its release in seawater from room-temperature-vulcanizing polydimethylsiloxane commercial coating. GAP was very stable in several water matrices, even at different pH values and in the presence/absence of marine microorganisms and presented a leaching value lower than 0.5%. This work discloses HILIC as an analytical method to overcome the difficulties in quantifying sulfated compounds in water matrices and highlights the potential of GAP as a promising long-lasting coating.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8