Abstract
Benzotriazole (BTRs) ultraviolet filters are a class of substances found in the environment that pose potential hazards to human health and environment. Therefore, it is essential to develop techniques for determining BTRs in the environment. In this paper, a simple, green, and effective vortex assisted liquid–liquid microextraction (VALLME) was developed to determine trace BTRs in the environment, combining natural deep eutectic solvents (NADES) with Gas chromatography-mass spectrometer (GC–MS). Result parameters were optimized by single factor analysis, Factorial Multilevel Categoric Design and Central Composite Design, and optimal extraction solve (NADES) was obtained by mixing choline chloride (ChCl) and lactic acid (LA) with the ratio 1:1. After optimization, the linearity (r2 ≥ 0.9929), LODs (0.010–0.083 μg/ml), LOQs (0.033–0.276 μg/ml), and RSD (2.96–4.21 %) were verified. For the first time, a method based on the new type of NADES for the determination of BTRs ultraviolet filters in soil was propose, which could replace traditional extractants for BTRs and serve as a sustainable and environmentally friendly extraction medium for other matrices.
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