TY - JOUR
T1 - Ionic liquids-based dispersive liquid-liquid microextraction for determination of carcinogenic polycyclic aromatic hydrocarbons in tea beverages
T2 - Evaluation of infusion preparation on pollutants release
AU - Rivera-Vera, Camilo
AU - Lasarte-Aragonés, Guillermo
AU - Bravo, Manuel A.
AU - Muñoz-Lira, Daniela
AU - Salazar, Ricardo
AU - Toledo-Neira, Carla
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/12
Y1 - 2019/12
N2 - A rapid, and sensitive analytical method based on the use of Dispersive Liquid-Liquid Microextraction, ionic liquids and High-performance liquid chromatography equipped with a fluorescence detector for determination of six carcinogenic Polycyclic Aromatic Hydrocarbons (PAHs) in tea infusions samples was developed. The effects of various parameters associated to analytical method and tea infusions preparation were studied. Under the optimized conditions the method exhibited good precision, with relative standard deviation values between 2% and 5%, for the six PAHs. Limits of detection of the method achieved for all the analytes were between 2.0 and 30.8 ng L−1, and the recoveries ranged from 56% to 94%. The proposed method was successfully applied to the analysis of twenty-five tea marketed in Chile. The concentration found for the six carcinogenic PAHs were reported for the first time in this study and the values are found between 0.4 and 9.7 μg L−1 for black tea, 7.0–16.3 μg L−1 for green tea and 1.4–8.25 μg L−1 for white tea.
AB - A rapid, and sensitive analytical method based on the use of Dispersive Liquid-Liquid Microextraction, ionic liquids and High-performance liquid chromatography equipped with a fluorescence detector for determination of six carcinogenic Polycyclic Aromatic Hydrocarbons (PAHs) in tea infusions samples was developed. The effects of various parameters associated to analytical method and tea infusions preparation were studied. Under the optimized conditions the method exhibited good precision, with relative standard deviation values between 2% and 5%, for the six PAHs. Limits of detection of the method achieved for all the analytes were between 2.0 and 30.8 ng L−1, and the recoveries ranged from 56% to 94%. The proposed method was successfully applied to the analysis of twenty-five tea marketed in Chile. The concentration found for the six carcinogenic PAHs were reported for the first time in this study and the values are found between 0.4 and 9.7 μg L−1 for black tea, 7.0–16.3 μg L−1 for green tea and 1.4–8.25 μg L−1 for white tea.
KW - Carcinogenic polycyclic aromatic hydrocarbons
KW - Dispersive liquid-liquid microextraction
KW - Tea infusions
UR - http://www.scopus.com/inward/record.url?scp=85067184360&partnerID=8YFLogxK
U2 - 10.1016/j.foodcont.2019.06.011
DO - 10.1016/j.foodcont.2019.06.011
M3 - Article
AN - SCOPUS:85067184360
SN - 0956-7135
VL - 106
JO - Food Control
JF - Food Control
M1 - 106685
ER -