Dispersive liquid–liquid microextraction based on the solidification of deep eutectic solvent for the determination of benzoylureas in environmental water samples. Issue 23 (6th December 2017)

• Record Type: Journal Article
• Authors: Zeng, Haozhe; Qiao, Kexin; Li, Xin; Yang, Miyi; Zhang, Sanbing; Lu, Runhua; Li, Jing; Gao, Haixiang; Zhou, Wenfeng
• Is Part Of: Journal of separation science. Volume 40:Issue 23(2017)
• Page Start: 4563
• Page End: 4570
• Publication Date: 2017-12-06
• Subjects: benzoylureas -- deep eutectic solvents -- dispersive liquid‐liquid microextraction -- high‐performance liquid chromatography -- solidification; Separation (Technology) -- Periodicals; Chromatographic analysis -- Periodicals; 543.089
• DOI: 10.1002/jssc.201700890
• Languages: English
• ISSNs: 1615-9306

Abstract

Abstract: We present a novel dispersive liquid–liquid microextraction method based on the solidification of deep eutectic solvent coupled with high‐performance liquid chromatography with a variable‐wavelength detection for the detection of five benzoylureas in real water samples. In this work, a green solvent consisting of 1‐octyl‐3‐methylimidazolium chloride and 1‐dodecanol was used as an extraction solvent, yielding the advantages of material stability, low density, and a suitable freezing point near room temperature. Parameters that significantly affect extraction efficiency were optimized by the one‐factor‐at‐a‐time approach. Under optimal conditions, the recoveries of five target compounds were obtained ranging from 87.39 to 98.05% with correlation coefficients ranging from 0.9994 to 0.9997 for pure water. The limits of detection were in the range of 0.09–0.16 μg/L. The enrichment factors were in the range of 171–188. Linearities were achieved in the range of 0.5–500 μg/L. The proposed method was successfully applied to determine benzoylureas in environmental water samples with a satisfactory recovery of approximately 81.38–97.67%.