Preparation a new sorbent based on polymeric ionic liquid for stir cake sorptive extraction of organic compounds and inorganic anions

Huang, Xiaojia; Wang, Yulei; Hong, Qiuyun; Liu, Yi; Yuan, Dongxing

doi:10.1016/j.chroma.2013.09.011

Cited by 20 publications

(5 citation statements)

References 32 publications

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“…With the increase of pH, the nitrogen atoms of the analytes were deprotonated, which increased the solubility of analytes in extraction solvent. Consequently, for alkaline compounds, extraction performance could be satisfactory with the increase of pH values .…”

Section: Resultsmentioning

confidence: 99%

Study of enrichment factors for six β-blockers in aliphatic alcohols by hollow-fiber liquid-phase microextraction

Jing

Zhang

et al. 2015

J. Sep. Science

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The selectivity of a suitable organic solvent is key for extraction in liquid-phase microextraction experiments. Nevertheless, the screening process remains a daunting task. Our research aimed to study the relationship between extraction efficiency and extraction solvents, analytes, and finally select the appropriate extraction solvent. In the present article, β-blockers and six extraction solvents were chosen as the models and hollow-fiber liquid-phase microextraction was conducted. The relationship was built by statistical analysis on the data. Factors affecting extraction efficiency including the logarithms of the octanol/water partition coefficient (logPo/w ) of analytes, acid dissociation constants, the logarithms of the octanol/water partition coefficient of solvents and pH of the sample solution were investigated. The results showed that a low water solubility of extraction solvent is the foundation to ensure higher extraction efficiency. Moreover, when ΔlogPo/w > 0, a higher extraction efficiency is observed at lower ΔlogPo/w , on the contrary, when ΔlogPo/w < 0, extraction efficiency is higher as the absolute value of ΔlogPo/w becomes greater. Finally, the relationship between enrichment factor and extraction solvents, analytes was established and a helpful guidance was provided for the selection of an optimal solvent to obtain the best extraction efficiency by liquid-phase microextraction.

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Section: Resultsmentioning

confidence: 99%

Study of enrichment factors for six β-blockers in aliphatic alcohols by hollow-fiber liquid-phase microextraction

Jing

Zhang

et al. 2015

J. Sep. Science

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“…Thus, compared with the solid phase microextraction, the EME procedure is more suitable for the analysis of different samples . Also, in comparison with in‐line hollow fiber membrane extraction and sorptive‐based extractions, the EME has a short extraction time .…”

Section: Resultsmentioning

confidence: 99%

Electro‐driven extraction of inorganic anions from water samples and water miscible organic solvents and analysis by ion chromatography

et al. 2014

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A simple electromembrane extraction (EME) procedure combined with ion chromatography (IC) was developed to quantify inorganic anions in different pure water samples and water miscible organic solvents. The parameters affecting extraction performance, such as supported liquid membrane (SLM) solvent, extraction time, pH of donor and acceptor solutions, and extraction voltage were optimized. The optimized EME conditions were as follows: 1-heptanol was used as the SLM solvent, the extraction time was 10 min, pHs of the acceptor and donor solutions were 10 and 7, respectively, and the extraction voltage was 15 V. The mobile phase used for IC was a combination of 1.8 mM sodium carbonate and 1.7 mM sodium bicarbonate. Under these optimized conditions, all anions had enrichment factors ranging from 67 to 117 with RSDs between 7.3 and 13.5% (n = 5). Good linearity values ranging from 2 to 1200 ng/mL with coefficients of determination (R(2) ) between 0.987 and 0.999 were obtained. The LODs of the EME-IC method ranged from 0.6 to 7.5 ng/mL. The developed method was applied to different samples to evaluate the feasibility of the method for real applications.

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“…Figure shows the polymerization sketch. In the second step, extraction holder of SCSE was constructed according to our previous study . Finally, the monolithic cake was inserted into the holder gently to get the final VBPDB/SCSE.…”

Section: Methodsmentioning

confidence: 99%

“…Stir cake sorptive extraction (SCSE) with porous monoliths as extraction phase was first developed in our group . The SCSE integrates extraction, enrichment, and clean‐up into one step.…”

Section: Introductionmentioning

confidence: 99%

Determination of fluoroquinolones in environmental water and milk samples treated with stir cake sorptive extraction based on a boron‐rich monolith

Mei

Huang

2016

J of Separation Science

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In this study, a new stir cake sorptive extraction using a boron-rich monolith as the adsorbent was prepared by the in situ copolymerization of vinylboronic anhydride pyridine complex and divinylbenzene. The effect of preparation parameters, including the ratio of vinylboronic anhydride pyridine complex and divinylbenzene, monomer mixture, and porogen solvent, on extraction performance was investigated thoroughly. The physicochemical properties of the adsorbent were characterized by infrared spectroscopy, scanning electron microscopy, and mercury intrusion porosimetry. Several conditions affecting the extraction efficiency were investigated in detail. Under the optimized conditions, a convenient and sensitive method for the determination of trace fluoroquinolones residues in water and milk samples was established by coupling stir cake sorptive extraction with high-performance liquid chromatography and diode array detection. The limits of detection for the target compounds were 0.10-0.26 and 0.11-0.22 μg/L for water and milk samples, respectively. In addition, the developed method showed good linearity, repeatability, and precision. Finally, the proposed method was successfully applied for the detection of trace fluoroquinolones residues in environmental water and milk samples. Satisfactory recoveries were obtained for the determination of fluoroquinolones in spiking samples that ranged from 68.8 to 120%, with relative standard deviations below 10% in all cases.

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Preparation a new sorbent based on polymeric ionic liquid for stir cake sorptive extraction of organic compounds and inorganic anions

Cited by 20 publications

References 32 publications

Study of enrichment factors for six β-blockers in aliphatic alcohols by hollow-fiber liquid-phase microextraction

Study of enrichment factors for six β-blockers in aliphatic alcohols by hollow-fiber liquid-phase microextraction

Electro‐driven extraction of inorganic anions from water samples and water miscible organic solvents and analysis by ion chromatography

Determination of fluoroquinolones in environmental water and milk samples treated with stir cake sorptive extraction based on a boron‐rich monolith

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