Microextraction by packed sorbent of polycyclic aromatic hydrocarbons in brewed coffee samples with a new zwitterionic ionic liquid-modified silica sorbent

Autor(es)

Jordan-Sinisterra, Marcela ; Vargas Medina, Deyber Arley ; Lancas, Fernando Mauro

• Tipo de documento: Artigo Científico
• Fonte: Journal of Food Composition and Analysis; v. 114, p. 9-pg., 2022-08-27.

Resumo

A simple, sensible, and high-throughput method was developed for determining selected polycyclic aromatic hydrocarbons (PAHs) from brewed coffee samples. Three sorbents based on ionic liquids supported on silica particles were synthesized, characterized, and assessed as extraction phases in microextraction by packed sorbent (MEPS). A synthesized zwitterionic ionic liquid-based sorbet (zIL@SiO2) exhibited superior extraction capabilities. The most relevant influencing parameters on the zIL@SiO2-based MEPS performance were systematically investigated. Under selected conditions, the MEPS method took less than 5 min and showed excellent linearity, precision, and trueness, from 5 to 100 mu g L-1 (R2 from 0.998 to 0.999). The method's accuracy was between ca. 73.34% and 118.66%; the precision, evaluated as the coefficient of variance (% RSD) for intraday and interday analysis, varied from 0.21% to 11.50%. The recovery percentage was 81.06-118.81%, and the detection limits (S/N = 3) ranged between 1.0 and 1.5 mu g L-1. The developed zIL@SiO2-MEPS-GC-MS method was applied to investigate 13 different Colombian and Brazilian coffee samples, allowing the detection and quantification of dangerous PAHs in the studied samples. The method is demonstrated to be a straightforward, fast, confident, and environment-friendly approach for surveillance pollutants in complex beverage samples. (AU)

• Processo FAPESP: 14/07347-9 - Desenvolvimento de novos materiais e dispositivos para técnicas miniaturizadas de preparo de amostras na área de segurança alimentar
• Beneficiário: Fernando Mauro Lanças
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 19/22724-7 - Novas estratégias instrumentais no desenvolvimento de métodos analíticos automatizados e miniaturizados para a determinação de compostos orgânicos mediante cromatografia líquida acoplada a espectrometria de massas
• Beneficiário: Deyber Arley Vargas Medina
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/02147-0 - Cromatografia líquida em uma gota e seu acoplamento com espectrometria de massas: estratégias instrumentais, desenvolvimento de materiais, automatização e aplicações analíticas
• Beneficiário: Fernando Mauro Lanças
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 15/15462-5 - Emprego do grafeno como material sorvente em técnicas miniaturizadas de preparo de amostra.
• Beneficiário: Bruno Henrique Fumes
• Modalidade de apoio: Bolsas no Brasil - Doutorado