RT Journal Article
T1 Covalent organic framework as adsorbent for ultrasound-assisted dispersive (micro)solid phase extraction of polycyclic synthetic fragrances from seawater followed by fluorescent determination
A1 Romero Rivas, Vanesa
A1 Lavilla Beltran, Maria Isela
A1 Álvarez, Alicia
A1 Bendicho Hernandez, Jose Carlos
A1 Espiña, Begoña
A1 Salonen, Laura M.
K1 2301 Química Analítica
K1 3308 Ingeniería y Tecnología del Medio Ambiente
AB In this work, a new analytical approach based on ultrasound-assisted dispersive (micro)solid phase extraction (US-D-μSPE) using TpBD-Me2 covalent organic framework (COF) as adsorbent for simple, rapid and selective fluorescent determination of two polycyclic synthetic fragrances in seawater, i.e., 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethyl-cyclopenta-(γ)-2-benzopyran (HHCB), branded galaxolide®, and 7-acetyl-1,1,3,4,4,6-hexamethyltetralin (AHTN), branded tonalide®, is proposed. Different parameters involved in both adsorption and desorption steps were optimized in order to obtain the best results. High adsorption efficiencies in the range of 91.2–97.8% were achieved for both analytes. Desorption efficiencies of ∼98% for AHTN and HHCB were obtained using methanol as solvent, rendering the material recyclable with merely minor losses in adsorption efficiency after five consecutive cycles of adsorption/desorption. Limits of detection (LODs) were 0.082 μg L−1 and 0.070 μg L−1 for AHTN and HHCB, respectively. The proposed method was successfully applied for the analysis of seawater without the need for a previous sample treatment, e.g., pH adjustment. Recoveries in the range of 90.4–101.2% with a relative standard deviation of 5.8% were obtained for both fragrances. The results proved the great capacity of TpBD-Me2 COF for the selective sorption of polycyclic fragrances in combination with fluorescent detection, being highly promising for application to environmental monitoring of other emerging organic pollutants.
PB Analytica Chimica Acta
SN 00032670
YR 2022
FD 2022-01-25
LK http://hdl.handle.net/11093/3080
UL http://hdl.handle.net/11093/3080
LA eng
NO Analytica Chimica Acta, 1191, 339293 (2022)
NO Financiado para publicación en acceso aberto: Universidade de Vigo/CISUG
NO Agencia Estatal de Investigación | Ref. RTI2018-093697-B-I00
DS Investigo
RD 23-sep-2023