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

Author(s)

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

• Document type: Journal article
• Source: Journal of Food Composition and Analysis; v. 114, p. 9-pg., 2022-08-27.

Abstract

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)

• FAPESP's process: 14/07347-9 - Development of novel materials and devices for miniaturized sample preparation techniques in the area of food safety
• Grantee: Fernando Mauro Lanças
• Support Opportunities: Regular Research Grants
• FAPESP's process: 19/22724-7 - Novel instrumental approaches for automated and miniaturized analytical methods for the detection of organic compounds by liquid chromatography coupled to mass spectrometry
• Grantee: Deyber Arley Vargas Medina
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 17/02147-0 - Single drop chromatography and its coupling to mass spectrometry: instrumental strategies, development of materials, automation and analytical applications
• Grantee: Fernando Mauro Lanças
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 15/15462-5 - Employment of graphene as sorbent in miniaturized sample preparation techniques.
• Grantee: Bruno Henrique Fumes
• Support Opportunities: Scholarships in Brazil - Doctorate