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Cloud point extraction of parabens using non-ionic surfactant with cylodextrin functionalized ionic liquid as a modifier.

ABSTRACT: 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 °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 µg mL-1. Finally, the inclusion complex formation, hydrogen bonding, and ?-? interaction between the ?CD-IL, benzyl paraben (ArP), and DC 193C were proven using 1H NMR and 2D NOESY spectroscopy.

SUBMITTER: Noorashikin MS

PROVIDER: S-EPMC3876126 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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