Journal
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
Volume 30, Issue 6, Pages 1203-1210Publisher
SOC BRASILEIRA QUIMICA
DOI: 10.21577/0103-5053.20190014
Keywords
deep eutectic solvent; in situ liquid-liquid microextraction; parabens; water analysis
Categories
Funding
- National Natural Science Foundation of China [41463010]
- Applied Basic Research Programs of Yunnan Science and Technology Department [2015FD087]
- Projects of Yunnan Education Department [2017ZDX048]
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In this study, an in situ deep eutectic solvent-liquid-liquid microextraction method together with high performance liquid chromatography was developed for the determination of parabens in aqueous sample. The hydrophobic deep eutectic solvent, formed in situ by the DL-menthol and decanoic acid was used as the extraction solvent. Various parameters affecting the extraction efficiency including the composition of deep eutectic solvent, temperature of sample solution, extraction time, solution pH and salt concentration were investigated and optimized. Under the optimum conditions, the linear range of calibration curves was in the range of 3-1000 ng mL(-1). The limits of detection and limits of quantification were in the range of 0.6-0.8 and 2.0-2.5 ng mL(-1), respectively. The relative standard deviations were less than 7.2% for both intra-day and inter-days analysis. Finally, the proposed method was successfully applied to determine four parabens in environmental water samples with acceptable recoveries.
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