Disks solid phase extraction based polypyrrole functionalized core–shell nanofibers mat

Qi, Fei-Fei; Li, Xiaoqing; Bian, Yang; Fei, Rong; Xu, Qian

doi:10.1016/j.talanta.2015.05.040

Cited by 39 publications

(8 citation statements)

References 34 publications

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“…Also, it has an excellent chemical stability in neutral and acidic media [30]. PPy can be coated on electrospun nanofibers by chemical deposition [31]. Recently, PPy as a coating nanomaterial for SPE has been utilized to remove pollutants from aquatic media [31,32,33,34,35,36,37].…”

Section: Introductionmentioning

confidence: 99%

“…PPy can be coated on electrospun nanofibers by chemical deposition [31]. Recently, PPy as a coating nanomaterial for SPE has been utilized to remove pollutants from aquatic media [31,32,33,34,35,36,37]. Also, it has been applied successfully to solid-phase microextraction of chemotherapeutics, antidepressants, and antihypertensive drugs in biological samples [25,38,39,40].…”

Section: Introductionmentioning

confidence: 99%

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Polypyrrole-Modified Nylon 6 Nanofibers as Adsorbent for the Extraction of Two β-Lactam Antibiotics in Water Followed by Determination with Capillary Electrophoresis

Miao

Yin

et al. 2019

Molecules

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A solid phase membrane adsorbent—a nylon 6 nanofibers membrane coated by polypyrrole (PPy-PA6-NFsM)—was firstly synthesized and used for extraction of two β-lactam antibiotics (oxacillin and cloxacillin) in urban river water. Then the analytes were detected by capillary electrophoresis with a diode array detector (CE-DAD). The synthesized nanofibers membrane was characterized by scanning electron microscopy and a Fourier transform infrared spectrometer. The experimental conditions were optimized, including the amount used of PPy-PA6-NFsM, pH of the sample solutions, adsorption volume, and desorption conditions. Under the optimal extraction and separation conditions, the detection limits were found to be 2.0 ng/mL for both oxacillin and cloxacillin. The proposed method was applied to the determination of the two β-lactams in water samples of an urban river. The recoveries of these two β-lactams were found to be in the range 84.2–96.4%, demonstrating that PPy-PA6-NFsM has a high extraction capability for these two antibiotics. The relative standard deviations, ranging from 2.26% to 5.29% for intraday measurements and from 2.38% to 7.02% for inter-day determinations, were derived respectively.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Polypyrrole-Modified Nylon 6 Nanofibers as Adsorbent for the Extraction of Two β-Lactam Antibiotics in Water Followed by Determination with Capillary Electrophoresis

Miao

Yin

et al. 2019

Molecules

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“…SPE provides an effective way to preconcentrate and purify analytes of interest from a great variety of sample matrixes by nonspecific adsorption . In SPE, sorbent carriers are the most important factor, and traditional sorbent carriers mainly include fibers , silica gel (SiO 2 ) , and activated carbon . Recently, nanoparticles (NPs) have also been widely used as novel adsorbent carriers in SPE due to their strong binding abilities, large number of active sites, and low mass.…”

Section: Introductionmentioning

confidence: 99%

l‐Cysteine‐modified silver‐functionalized silica‐based material as an efficient solid‐phase extraction adsorbent for the determination of bisphenol A

Zhu

Li³

et al. 2017

J of Separation Science

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A new silver-functionalized silica-based material with a core-shell structure based on silver nanoparticle-coated silica spheres was synthesized, and silver nanoparticles were modified using strongly bound l-cysteine. l-Cysteine-silver@silica was characterized by scanning electron microscopy and FTIR spectroscopy. Then, a solid-phase extraction method based on l-cysteine-silver@silica was developed and successfully used for bisphenol A determination prior to HPLC analysis. The results showed that the l-cysteine-silver@silica as an adsorbent exhibited good enrichment capability for bisphenol A, and the maximum adsorption saturation was 20.93 mg/g. Moreover, a short adsorption equilibrium time was obtained due to the presence of silver nanoparticles on the surface of the silica. The extraction efficiencies were then optimized by varying the eluents and pH. Under the optimized conditions, good linearity for bisphenol A was obtained in the range from 0.4 to 4.0 μM (R > 0.99) with a low limit of detection (1.15 ng/mL). The spiked recoveries from tap water and milk samples were satisfactory (85-102%) with relative standard deviations below 5.2% (n = 3), which indicated that the method was suitable for the analysis of bisphenol A in complex samples.

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“…Among these preconcentration techniques, solid phase extraction (SPE) is a widely used technique for the extraction and concentration of analytes from liquid samples to achieve increased sensitivity in the analytical process. 11,12 Compared with traditional technologies, SPE offers several advantages such as simplicity, high enrichment factor and less solvent consumption. The SPE technique not only can be performed in the off-line mode, but also provides the possibility of on-line coupling to analytical instruments.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Determination of Rare Earth Elements by ICP OES After On-Line Enrichment Using Multi-Walled Carbon Nanotubes Coated Cellulose Acetate Membrane

Zolfonoun¹,

Yousefi²

2016

Journal of the Brazilian Chemical Society

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This study investigates application of multi-walled carbon nanotubes coated cellulose acetate membrane for on-line extraction and preconcentration of some rare earth elements (Y, La, Ce, Nd, Sm, Gd and Dy) prior to their determination by inductively coupled plasma optical emission spectrometry. Sample solutions containing rare earth elements (pH: 6.0) and l-(2-pyridylazo) 2-naphtol (4.0 × 10 -5 mol L -1 ) were passed through the membrane (flow rate: 5.0 mL min -1). The adsorbed cations were subsequently eluted from the membrane and transferred into the plasma with nitric acid solution (flow rate: 3.0 mL min -1 ) for simultaneous determination of them. The effect of different experimental parameters on the performance of the method were studied and discussed. Under the optimized conditions and preconcentration of 25 mL of sample, the enrichment factors of 185-201 and the detection limits of 0.05-0.3 μg L -1 were obtained.

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Disks solid phase extraction based polypyrrole functionalized core–shell nanofibers mat

Cited by 39 publications

References 34 publications

Polypyrrole-Modified Nylon 6 Nanofibers as Adsorbent for the Extraction of Two β-Lactam Antibiotics in Water Followed by Determination with Capillary Electrophoresis

Polypyrrole-Modified Nylon 6 Nanofibers as Adsorbent for the Extraction of Two β-Lactam Antibiotics in Water Followed by Determination with Capillary Electrophoresis

l‐Cysteine‐modified silver‐functionalized silica‐based material as an efficient solid‐phase extraction adsorbent for the determination of bisphenol A

Simultaneous Determination of Rare Earth Elements by ICP OES After On-Line Enrichment Using Multi-Walled Carbon Nanotubes Coated Cellulose Acetate Membrane

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