Mechanochemically synthesized zeolitic imidazolate framework-8 as sorbent for dispersive solid-phase extraction of benzophenone-type ultraviolet filters in aqueous samples.

Autor: Qiu YY; Department of Chemistry, National Central University, Chung-Li 320, Taiwan., Ding WH; Department of Chemistry, National Central University, Chung-Li 320, Taiwan. Electronic address: wanghsiending@gmail.com.
Jazyk: angličtina
Zdroj: Journal of chromatography. A [J Chromatogr A] 2022 Oct 11; Vol. 1681, pp. 463443. Date of Electronic Publication: 2022 Aug 23.
DOI: 10.1016/j.chroma.2022.463443
Abstrakt: Benzophenone-type ultraviolet filters (BP-UVFs) are a group of emerging contaminants, which found in various environmental aqueous samples raising potential risks for public health concern and could bioaccumulate in the food chain. This study describes a simple and "green" method to rapidly analyze five BP-UVFs that are frequently found in surface water and in seawater samples. Dispersive solid-phase extraction (DSPE) using a zeolitic imidazolate framework‑8 (ZIF-8) as the sorbent was applied to efficiently extract the BP-UVFs from aqueous samples, and they were then detected and quantified by UHPLC-electrospray ionization (+)-quadrupole time-of-flight mass spectrometry (UHPLC-ESI (+)-QTOF-MS). The ZIF-8 sorbent was synthesized by a green one-step mechanochemical process using water-assisted grinding and a stoichiometric reaction. The Box-Behnken Design coupled with the response surface method was applied to optimize the main DSPE extraction factors. The developed method was fully validated, showing low limits of quantification (LOQs; 0.3-20 ng L -1 ), satisfactory mean spiked recoveries (72-105%), and a high level of precision (3-9%). A preliminary analysis of the surface water and seawater samples revealed that 2-hydroxy-4-methoxybenzophenone (BP-3) was the most common BP-UVF present in our aquatic environment, likely due to its widespread applications and slow rate of degradation.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper, the title as listed above.
(Copyright © 2022 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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