Journal
JOURNAL OF SEPARATION SCIENCE
Volume 45, Issue 7, Pages 1374-1384Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.202100917
Keywords
deep eutectic solvent; mesh support; parabens; thin-film solid-phase microextraction
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Funding
- National Science Centre-NCN (Poland) [2020/04/X/ST4/00204]
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A green and sensitive thin-film solid-phase microextraction method based on deep eutectic solvent was developed for simultaneous isolation, preconcentration, and determination of parabens in surface waters. The proposed method achieved good precision, recovery, and low detection limits.
A green and sensitive thin-film solid-phase microextraction method based on deep eutectic solvent was developed that enables simultaneous isolation, preconcentration, and determination of parabens in surface waters. Six new deep eutectic solvents were synthesized and used directly to prepare thin-film coatings on a stainless steel mesh support. Among the compounds obtained, the highest efficiency in the extraction of parabens was found for a material consisting of trihexyltetradecylphosphonium chloride and n-docosanol in a molar ratio of 1:2. For the proposed method, parameters affecting the extraction efficiency of parabens, such as the coating material, the desorption solvent, the volume of the sample, the pH of the sample, the extraction and desorption time, and the salting-out effect, were optimized. Under optimal conditions, the proposed method allowed us to achieve good precision between 3.6 and 6.5% and recovery ranging from 68.1 to 91.4%. The limits of detection range from 0.018 to 0.055 ng/mL.
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