期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 14, 期 12, 页码 24531-24548出版社
MDPI
DOI: 10.3390/ijms141224531
关键词
cloud point extraction; non-ionic surfactant; beta-cyclodextrin-ionic liquid; paraben; water sample
资金
- University Malaya [RPOO6A-13SUS]
- IPPP grant [PV076/2012A]
- University Malaya Centre for Ionic Liquid
- High Impact Research Grant UM-MOHE from the Ministry of Higher Education Malaysia (MOHE) [UM.C/625/1/MR/MOHE/F00004-21001]
- University of Malaysia Terengganu (UMT)
- Advanced Medical and Dental Institute, University of Science Malaysia (IPPT)
- MOHE
A cloud point extraction (CPE) process using non-ionic surfactant (DC193C) to extract selected paraben compounds from water samples was investigated using reversed phase high performance liquid chromatography (RP-HPLC). The CPE process with the presence of -cyclodextrin (CD) functionalized ionic liquid as a modifier (CPE-DC193C-CD-IL) is a new extraction technique that has been applied on the optimization of parameters, i.e., pH, CD-IL concentration and phase volume ratio. This CPE-DC193C-CD-IL method is facilitated at 30 degrees C, showing great losses of water content in the surfactant-rich phase, resulting in a high pre-concentration factor and high distribution coefficient. The developed method CPE-DC193C-CD-IL did show enhanced properties compared to the CPE method without the modifier (CPE-DC193C). The developed method of CPE-DC193C-CD-IL gives an excellent performance on the detection of parabens from water samples with the limit of detection falling in the range of 0.013-0.038 g mL(-1). Finally, the inclusion complex formation, hydrogen bonding, and - interaction between the CD-IL, benzyl paraben (ArP), and DC 193C were proven using H-1 NMR and 2D NOESY spectroscopy.
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