Ionic liquid foam floatation coupled with solid phase extraction for separation and determination of hormones by high-performance liquid chromatography

Zhang, Rui; Li, Na; Wang, Chuanliu; Bai, Yang; Ren, Ruibing; Gao, Shiqian; Yu, Wenzhi; Zhang, Hanqi

doi:10.1016/j.aca.2011.08.016

Cited by 26 publications

(12 citation statements)

References 50 publications

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“…The current method was compared with other reported methods for the determination of some steroid hormones . The data listed in Table illustrate that the current method has a comparable or even better performance compared with the reported methods in terms of LODs, method recovery and RSDs.…”

Section: Resultsmentioning

confidence: 89%

Magnetic porous carbon derived from a metal–organic framework as a magnetic solid‐phase extraction adsorbent for the extraction of sex hormones from water and human urine

Hao

Wang

et al. 2016

J of Separation Science

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An iron-embedded porous carbon material (MIL-53-C) was fabricated by the direct carbonization of MIL-53. The MIL-53-C possesses a high surface area and good magnetic behavior. The structure, morphology, magnetic property, and porosity of the MIL-53-C were studied by scanning electron microscopy, transmission electron microscopy, vibrating sample magnetometry, and N2 adsorption. With the use of MIL-53-C as the magnetic solid-phase extraction adsorbent, a simple and efficient method was developed for the magnetic solid-phase extraction of three hormones from water and human urine samples before high-performance liquid chromatography with UV detection. The developed method exhibits a good linear response in the range of 0.02-100 ng/mL for water and 0.5-100 ng/mL for human urine samples, respectively. The limit of detection (S/N = 3) for the analytes was 0.005-0.01 ng/mL for water sample and 0.1-0.3 ng/mL for human urine sample. The limit of quantification (S/N = 10) of the analytes were in the range of 0.015-0.030 and 0.3-0.9 ng/mL, respectively.

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Section: Resultsmentioning

confidence: 89%

Magnetic porous carbon derived from a metal–organic framework as a magnetic solid‐phase extraction adsorbent for the extraction of sex hormones from water and human urine

Hao

Wang

et al. 2016

J of Separation Science

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“…Ionic liquids (ILs) are molten salts containing relatively large asymmetric organic cations and inorganic or organic anions with melting points at or below room temperature [28]. ILs have many advantages such as non-flammability, non-volatility, high ionic conductivity, and high ion density.…”

Section: Introductionmentioning

confidence: 99%

Ionic liquid-molecularly imprinted polymers for pipette tip solid-phase extraction of (Z)-3-(chloromethylene)-6-flourothiochroman-4-one in urine

Yuan

Liang

Yan

et al. 2015

Journal of Chromatography A

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“…Ionic liquids (ILs) are a class of organic molten salts consisting of a pair of soft cationic and anionic species with a melting point close to or below room temperature [1]. They display many fascinating characteristics such as high thermal and chemical stability, negligible vapor pressure, nonvolatility, strong polarity, and good solvating properties [2].…”

Section: Introductionmentioning

confidence: 99%

Polymethacrylate microparticles covalently functionalized with an ionic liquid for solid-phase extraction of fluoroquinolone antibiotics

et al. 2015

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Microparticles were synthesized by suspension copolymerization of the synthetic ionic liquid (IL) 1-allyl-3-methylimidazolium bromide with ethylene glycol dimethacrylate. The particles have a regular spherical shape and an average diameter of 65±24 μm. Their affinity for the fluoroquinolone antibiotics ofloxacin (OFL), lomefloxacin (LOM) and ciprofloxacin (CIP) is much higher than that of the blank polymer (not containing an IL), of polymers using methacrylic acid as functional monomer, of hydrophilic-lipophilic balanced sorbents, and of C 18 sorbents. The microparticles were applied to the solid-phase extraction and rapid preconcentration of the fluoroquinolones from urine which then were quantified by HPLC. The calibration plot covers the 0.05 to 20 μg mL −1 concentration range, and the average recoveries at three spiking levels range from 93.6 to 103.7 %, with RSD of ≤5.7 %. The method was successfully applied to the determination of fluoroquinolones in spiked urine.

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Ionic liquid foam floatation coupled with solid phase extraction for separation and determination of hormones by high-performance liquid chromatography

Cited by 26 publications

References 50 publications

Magnetic porous carbon derived from a metal–organic framework as a magnetic solid‐phase extraction adsorbent for the extraction of sex hormones from water and human urine

Magnetic porous carbon derived from a metal–organic framework as a magnetic solid‐phase extraction adsorbent for the extraction of sex hormones from water and human urine

Ionic liquid-molecularly imprinted polymers for pipette tip solid-phase extraction of (Z)-3-(chloromethylene)-6-flourothiochroman-4-one in urine

Polymethacrylate microparticles covalently functionalized with an ionic liquid for solid-phase extraction of fluoroquinolone antibiotics

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