Evaluation of MCM-41 and MCM-48 mesoporous materials as sorbents in matrix solid phase dispersion method for the determination of pesticides in soursop fruit (Annona muricata)

• Autor(a) principal: Santos, Luís Fabrício Santana
• Data de Publicação: 2019
• Outros Autores: de Jesus, Roberta Anjos, Costa, José Arnaldo Santana, Gouveia, Lucas Gabriel Teixeira, de Mesquita, Maria Eliane, Navickiene, Sandro
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10773/37179
• topic: Annona muricata; MSPD; Mesoporous material; Pesticides; Soursop

The MCM-41 and MCM-48 mesoporous materials were tested for extraction of thiamethoxam, thiacloprid, thiophanate-methyl, teflubenzuron, and bifenthrin from the fruit of soursop (Annona muricata), using liquid chromatography with ultraviolet diode array detection as the analysis technique. Extractions performed at one fortification level (0.5 mg kg−1, n = 3) resulted in recoveries in the ranges 75–106% and 76–95% for MCM-41 and MCM-48, respectively, with relative standard deviations (n = 3) ranging from 5 to 9%. The detection and quantification limits for the pesticides studied were in the ranges of 0.02–0.06 mg kg−1 and 0.05–0.10 mg kg−1. The developed method was linear over the concentration range tested (0.01–5 mg kg−1), with correlation coefficients of between 0.9620 and 0.9999. Comparison of the mesoporous materials and a conventional sorbent (Florisil) revealed a similar performance for the pesticides.