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Citation: SHEN Shuchang, LI Fei, ZHENG Jianhua. Preparation of C₄eBimPF₆ Ionic Liquid and Its Application as a Liquid-phase Microextraction Extractant[J]. Chinese Journal of Applied Chemistry, ;2011, 28(10): 1202-1207. doi: 10.3724/SP.J.1095.2011.00658 shu

Preparation of C₄eBimPF₆ Ionic Liquid and Its Application as a Liquid-phase Microextraction Extractant

1.
Analytical and Testing Center of Qiqihar University, Qiqihar 161006

Corresponding author: SHEN Shuchang,
Received Date: 5 November 2010
Available Online: 10 January 2011
Fund Project: 黑龙江省教育厅科学技术研究项目(11531410) (11531410)

1-Ethylbenzimidazolium(eBim),1-ethyl-3-butyl-benzimi dazoliumbromine(C₄eBimBr) intermediates,and 1-ethyl-3-butyl-benzimidazoliumhexafluorophosphate(C₄eBimPF₆) ionic liquid were synthesized.The structures of the intermediates and the ionic liquid were analyzed with IR and nuclear magnetic resonance spectroscopies.An analytical method for the determination of dioctyl phthalate(DOP) and dinonyl phthalate(DIP) in water using ionic liquid-based microextraction coupled with high performance liquid chromatography was developed.The influence of the extraction parameters including the extraction temperature,extraction time,and amount of ionic liquid was investigated.In the range from 1.0~10 μg/L,the relationship between the peak height and concentration of DOP and DNP was linear,and the correlative coefficients were 0.9847 and 0.9872 respectively.The limits of detection of the DOP and DNP were 0.018 and 0.052 μg/L,recoveries of DOP and DNP were 94.3%~102% and 93.5%~103%,respectively.
- benzimidazole ionic liquid,
- dispersive liquid-phase microextraction,
- high performance liquid chromatography,
- phthalate
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Preparation of C₄eBimPF₆ Ionic Liquid and Its Application as a Liquid-phase Microextraction Extractant