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  • Fabrication of a polymeric ionic liquid-based adsorbent for multiple monolithic fiber solid-phase microextraction of endocrine disrupting chemicals in complicated samples.

Fabrication of a polymeric ionic liquid-based adsorbent for multiple monolithic fiber solid-phase microextraction of endocrine disrupting chemicals in complicated samples.

Talanta (2017-02-06)
Miao Pei, Zirui Zhang, Xiaojia Huang, Yuanfei Wu
RÉSUMÉ

A multiple monolithic fiber solid-phase microextraction (MMF-SPME) utilizing polymeric ionic liquid-based adsorbent was prepared. The adsorbent was obtained by in situ copolymerization of an ionic liquid, 1-trimethyl-(4-vinylbenzyl) aminium chloride and dual cross-linkers (divinylbenzene and ethylenedimethacrylate). The effect of preparation conditions including the content of ionic liquid and porogen in the polymerization mixture on extraction performance was studied in detail. Infrared spectroscopy, elemental analysis, scanning electron microscopy and mercury intrusion porosimetry were used to inspect the physicochemical properties of the new adsorbent. The applicability of the new MMF-SPME was demonstrated by the extraction of trace endocrine disrupting chemicals (EDCs). Results indicated that the prepared MMF-SPME could extract EDCs effectively through multi-interactions such as ion-exchange, π-π and hydrophobic interactions. After optimization of extraction parameters, a method of MMF-SPME coupled to high performance liquid chromatography/diode array detection was conducted to detect trace EDCs in complicated samples including environmental water and human urine. The limits of detection (S/N=3) and quantification (S/N=10) for targeted compounds were 0.011-0.065μg/L and 0.036-0.21μg/L, respectively. Satisfactory precision was also achieved by evaluating the repeatability and intermediate precision with relative standard deviations (RSDs) of less than 9% and 10%, respectively. At the same time, the proposed method was successfully applied for the determination of EDCs in water and human urine with spiking recoveries ranged from 70.6% to 119%.

MATÉRIAUX
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Description du produit

Supelco
Ensemble de fibres de SPME, divinylbenzène/carboxène/polydiméthylsiloxane (DVB/CAR/PDMS), matrix active group 50/30µm DVB/CAR/PDMS, needle size 24 ga, StableFlex fiber, for use with autosampler, fiber L 2 cm, pk of 3
Supelco
Ensemble de fibres de SPME, divinylbenzène/carboxène/polydiméthylsiloxane (DVB/CAR/PDMS), matrix active group 50/30µm DVB/CAR/PDMS, StableFlex fiber, manual holder, needle size 24 ga
Supelco
Ensemble de fibres de SPME, divinylbenzène/carboxène/polydiméthylsiloxane (DVB/CAR/PDMS), 50/30µm DVB/CAR/PDMS, StableFlex (1 cm), needle size 23 ga, Autosampler, pk of 3, plain gray hub
Supelco
Ensemble de fibres de SPME, divinylbenzène/carboxène/polydiméthylsiloxane (DVB/CAR/PDMS), matrix active group 50/30µm DVB/CAR/PDMS, needle size 24 ga, StableFlex, for use with autosampler, fiber L 1 cm, pk of 3
Supelco
Ensemble de fibres de SPME, divinylbenzène/carboxène/polydiméthylsiloxane (DVB/CAR/PDMS), 50/30µm DVB/CAR/PDMS, StableFlex (2cm), needle size 23 ga, Autosampler, pk of 3, notched gray hub
Supelco
Fibres SPME polydiméthylsiloxane (PDMS), df 100 μm(PDMS, for use with autosampler, needle size 23 ga
Supelco
Fibres SPME polydiméthylsiloxane (PDMS), df 100 μm(PDMS, needle size 24 ga, for use with manual holder
Supelco
Fibres SPME polydiméthylsiloxane (PDMS), df 100 μm(PDMS, for use with autosampler, needle size 24 ga
Supelco
Unité de fibres SPME, carboxène/polydiméthylsiloxane (CAR/PDMS), df 75 μm(CAR/PDMS, for use with manual holder, needle size 24 ga
Supelco
Unité de fibres SPME, Polydiméthylsiloxane/divinylbenzène (PDMS/DVB), df 65 μm(PDMS/DVB, needle size 24 ga, StableFlex, for use with autosampler
Supelco
Unité de fibres SPME, carboxène/polydiméthylsiloxane (CAR/PDMS), df 85 μm(CAR/PDMS, needle size 23 ga, StableFlex, for use with autosampler
Supelco
Unité de fibres SPME, carboxène/polydiméthylsiloxane (CAR/PDMS), df 85 μm(CAR/PDMS, needle size 24 ga, StableFlex, for use with autosampler
Supelco
Fibres SPME polyacrylate (PA), df 85 μm(PA, for use with autosampler, needle size 23 ga
Supelco
Unité de fibres SPME, Polydiméthylsiloxane/divinylbenzène (PDMS/DVB), df 65 μm(PDMS/DVB, needle size 24 ga, for use with manual holder
Supelco
Unité de fibres SPME, Polydiméthylsiloxane/divinylbenzène (PDMS/DVB), df 65 μm(PDMS/DVB, needle size 23 ga, PDMS/DVB StableFlex, for use with autosampler
Supelco
Unité de fibres SPME, carboxène/polydiméthylsiloxane (CAR/PDMS), df 75 μm(CAR/PDMS, needle size 24 ga, for use with autosampler
Supelco
Unité de fibres SPME, Polydiméthylsiloxane/divinylbenzène (PDMS/DVB), df 65 μm(PDMS/DVB, needle size 24 ga, for use with autosampler
Supelco
Unité de fibres SPME, carboxène/polydiméthylsiloxane (CAR/PDMS), df 85 μm(CAR/PDMS, needle size 24 ga, for use with manual holder, StableFlex fiber
Supelco
Unité de fibres SPME, Polydiméthylsiloxane/divinylbenzène (PDMS/DVB), df 65 μm(PDMS/DVB, needle size 24 ga, StableFlex, for use with manual holder
Supelco
Fibres SPME polyacrylate (PA), df 85 μm(PA, for use with autosampler, needle size 24 ga
Supelco
Fibres SPME polydiméthylsiloxane (PDMS), df 100 μm(PDMS, for use with manual holder, needle size 23 ga
Supelco
Unité de fibres SPME, carboxène/polydiméthylsiloxane (CAR/PDMS), df 75 μm(CAR/PDMS, needle size 23 ga, for use with autosampler
Supelco
Unité de fibres SPME, Polydiméthylsiloxane/divinylbenzène (PDMS/DVB), df 65 μm(PDMS/DVB, for use with autosampler, needle size 23 ga
Supelco
Kit d'assortiment de fibres SPME StableFlex, for use with manual holder
Supelco
SPME fiber assembly, Carbowax-Polyethylene Glycol (PEG) Coating, needle size 23 ga, df 60 μm(PEG, for use with autosampler
Supelco
Kit d'assortiment de fibres SPME StableFlex, needle size 23 ga, StableFlex fiber, for use with autosampler
Supelco
Unité de fibres SPME, carboxène/polydiméthylsiloxane (CAR/PDMS), df 75 μm(CAR/PDMS, needle size 23 ga, for use with manual holder
Supelco
Ensemble de fibres de SPME, divinylbenzène/carboxène/polydiméthylsiloxane (DVB/CAR/PDMS), for use with autosampler, matrix active group 50/30µm DVB/CAR/PDMS, needle size 23 ga, metal alloy fiber, fiber L 2 cm
Supelco
Fibres SPME polyacrylate (PA), df 85 μm(PA, for use with manual holder, needle size 24 ga
Supelco
Unité de fibres SPME, Polydiméthylsiloxane/divinylbenzène (PDMS/DVB), fused silica fiber, df 65 μm(PDMS/DVB, for use with manual holder, needle size 23 ga