Citation: XU Neng-Bin, FENG Jia-Yong, ZHU Li-Bo, QIAN Fei-Zhong, XU Li-Hong, CHEN Zhong-Quan, WANG Sheng-Le. Comparison of Two Ionic Liquid Dispersive Liquid-Liquid Microextraction Approaches for Determination of Acrylamide, Caprolactam, Benzidine and Aniline in Water[J]. Chinese Journal of Analytical Chemistry, ;2016, 44(1): 117-123. doi: 10.11895/j.issn.0253-3820.150411 shu

Comparison of Two Ionic Liquid Dispersive Liquid-Liquid Microextraction Approaches for Determination of Acrylamide, Caprolactam, Benzidine and Aniline in Water

1.
¹ Ningbo Environmental Monitoring Center, Ningbo 315012, China;
2.
² Shaoxing Environmental Monitoring Center, Shaoxing 312000, China

Corresponding author: FENG Jia-Yong,
Received Date: 19 May 2015
Available Online: 16 September 2015
Fund Project: 本文系国家高技术研究发展计划(No.2011AA060603) (No.2011AA060603)环保部科研公益性行业专项(No.201209016) (No.201209016)宁波市自然科学基金(No.2011A610087)资助 (No.2011A610087)

A comparative study of the performance of ultrasound-assisted (UA), and temperature-controlled (TC) ionic liquid (IL) dispersive liquid-liquid microextraction (IL-DLLME) was presented. Various parameters that affected extraction efficiency were evaluated. UA-IL-DLLME was found to provide the better extraction efficiency. After adjustment of pH, the water sample was mixed with[C₈MIM] [PF₆] and acetonitrile, then was extracted under ultrasound-assisted/temperature-controlled conditions. The mixture was then centrifuged, separated, and analyzed by UPLC-MS/MS. Under the optimal conditions, the calibration curves were linear well with correlation coefficient ranged from 0.9969-0.9991, and the limits of detection of acrylamide, caprolactam, aniline and benzidine were in the range of 5.0-50 ng/L. At the spiked levels of three concentrations, the average recoveries were between 81.5% and 106.9%. The relative standard deviations of run-to-run and day-to-day were 7.6%-15.7% and 14.7%-22.9%, respectively. The developed method is simple and sensitive, and was suitable for rapid analysis of large quantities of samples.
- Acrylamide,
- Caprolactam,
- Benzidine,
- Aniline,
- Ultra performance liquid chromatography tandem mass spectrometry,
- Dispersive liquid-liquid microextraction,
- Ionic liquid,
- Ultrasound-assisted
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沈阳化工大学材料科学与工程学院沈阳 110142