Abstract
UV-filter compounds, which are mostly formulated in cosmetic and hygienic products, are known as an emerging group of environmental pollutants. Solid phase extraction using silica based sorbents followed by high performance liquid chromatography has been the most frequently used technique for extraction and analysis of these analytes in the products formulations as well as environmental samples. In this work, the mentioned sorbent (LiChrolut RP-18) has been compared with commercially available polystyrene-divinylbenzene (LiChrolut EN) and LiChrolut RP-18 + LiChrolut EN cartridges. Efficiency of the sorbents for extraction of Benzophenone-3, 4-methylbenzilidene camphor, octocrylene, and Ethylhexyl methoxy cinnamate, as the representatives of UV-filter compounds at neutral and acidic sample solutions, has been studied. Comparing relative recoveries of extraction showed that LiChrolut EN was significantly more efficient for the extraction from the contaminated matrix of river water, especially for more polar components, although no gross difference was observed in the case of spiked pure solutions. The chosen approach for the analysis showed LODs from 0.2 to 0.6 µgL−1, and linear responses from 0.5 to 100 µ g L−1. The reproducibility of the method (RSD from 1.4 to 10.4% at 5 µgL−1) was sufficient for precise environmental trace analysis.
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