Zeolite/iron oxide composite as sorbent for magnetic solid-phase extraction of benzene, toluene, ethylbenzene and xylenes from water samples prior to gas chromatography⬜mass spectrometry

Fernández, Elena; Vidal, Lorena; Canals, Antonio

doi:10.1016/j.chroma.2016.06.049

Cited by 53 publications

(17 citation statements)

References 27 publications

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“…Synthesis of ZSM-5/Fe2O3 compositeSynthesis of ZSM-5/Fe2O3 composite, described in detail in our previous work[48], was performed in a ZSM-5/Fe2O3 weight ratio of 3:1. This weight ratio was chosen to avoid a decrease in available surface area and for ease of composite manipulation under a magnetic field[48]. Briefly, the composite was prepared from a suspension of 3 g of ZSM-5 zeolite in 250 mL solution with FeCl3•6H2O (2.335 g) and FeSO4•7H2O (1.201 g).…”

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A modified zeolite/iron oxide composite as a sorbent for magnetic dispersive solid-phase extraction for the preconcentration of nonsteroidal anti-inflammatory drugs in water and urine samples

Baile

Vidal

Canals

2019

Journal of Chromatography A

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This study is the first to use a new ZSM-5 zeolite-based composite decorated with iron oxide magnetic nanoparticles and modified with hexadecyltrimethylammonium bromide surfactant (i.e., HDTMA-ZSM-5/Fe2O3) as an efficient sorbent for magnetic dispersive solid-phase extraction (MDSPE) of nonsteroidal anti-inflammatory drugs in water and urine samples with subsequent measurement by liquid chromatography diode array detection. Experimental factors affecting MDSPE were optimized using a multivariate optimization strategy. The optimum experimental conditions were: amount of sorbent, 40 mg; sample pH, 2.2; NaCl concentration, 2.5%; extraction time, 2 min; eluent solvent, methanol; eluent solvent volume, 424 μL; and elution time, 2 min. The linearity of the method was studied from 3.3 to 400 µg L-1 (N=8) for ketoprofen, from 1.7 to 400 µg L-1 (N=8) for felbinac, from 6.6 to 400 µg L-1

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A modified zeolite/iron oxide composite as a sorbent for magnetic dispersive solid-phase extraction for the preconcentration of nonsteroidal anti-inflammatory drugs in water and urine samples

Baile

Vidal

Canals

2019

Journal of Chromatography A

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“…Zeolites, which are microporous crystalline aluminosilicates, are good MDSPE‐sorbent candidate due to their simple modification to obtain the desired physical properties (i.e., magnetism). Recently, zeolite‐based magnetic composites have been proposed for organic‐compound and metal extraction from environmental, biological, and food samples. Furthermore, the external surface of zeolites can easily be modified with functional groups, thus altering zeolite adsorption properties.…”

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confidence: 99%

Determination of four bisphenols in water and urine samples by magnetic dispersive solid‐phase extraction using a modified zeolite/iron oxide composite prior to liquid chromatography diode array detection

Baile

Medina

Vidal

et al. 2020

J of Separation Science

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A novel approach is presented to determine four bisphenols in water and urine samples, employing magnetic dispersive solid-phase extraction combined with liquid chromatography and diode array detection. A modified zeolite-based magnetic composite was used as an efficient sorbent, combining the advantages of magnetic materials with the remarkable properties of zeolites. A multivariate optimization design was employed to optimize some experimental factors affecting magnetic dispersive solid-phase extraction. The method was evaluated under optimized conditions (i.e., amount of sorbent, 50 mg; sample pH, unadjusted; NaCl concentration, 1.25%; extraction and elution time, 2 min; eluent solvent, ethanol; eluent solvent volume, 400 μL), obtaining good linearity with correlation coefficients ranging between 0.995 and 0.999 (N = 5) (from 2 to 250 μg/L for bisphenol A, bisphenol AP, and bisphenol P and from 5 to 250 μg/L for bisphenol AF). Method repeatability was assessed obtaining coefficients of variation between 3 and 11% (n = 6). Finally, the method was applied to spiked real samples, obtaining for water samples relative recoveries between 83 and 105%, and for urine samples between 81 and 108% for bisphenol A, bisphenol AP, and bisphenol AF, and between 47 and 59% for bisphenol P. K E Y W O R D Sbisphenols, magnetic dispersive solid-phase extraction, urine samples, water samples, zeolites 1808

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“…Volatile organic compounds (VOCs) are toxic to the human body and harmful to the environment as some of the VOCs form the main component of photochemical smog and industrial pollution 1 – 4 . The most conventional methods for VOC detection include mass spectrometry and gas chromatography 5 , 6 . However, although these methods allow high-precision and high-resolution detection of VOCs, they have a long measuring period, bulky size, and high cost, which restrict these methods from onsite monitoring and real-time analysis.…”

Section: Introductionmentioning

confidence: 99%

Ultra-fast responsive colloidal–polymer composite-based volatile organic compounds (VOC) sensor using nanoscale easy tear process

Chang

Thokchom

et al. 2018

Sci Rep

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There is an immense need for developing a simple, rapid, and inexpensive detection assay for health-care applications or monitoring environments. To address this need, a photonic crystal (PC)-based sensor has been extensively studied due to its numerous advantages such as colorimetric measurement, high sensitivity, and low cost. However, the response time of a typical PC-based sensor is relatively slow due to the presence of the inevitable upper residual layer in colloidal structures. Hence, we propose an ultra-fast responsive PC-based volatile organic compound (VOC) sensor by using a “nanoscale easy tear (NET) process” inspired by commercially available “easy tear package”. A colloidal crystal-polydimethylsiloxane (PDMS) composite can be successfully realized through nanoscale tear propagation along the interface between the outer surface of crystallized nanoparticles and bulk PDMS. The response time for VOC detection exhibits a significant decrease by allowing the direct contact with VOCs, because of perfect removal of the residual on the colloidal crystals. Moreover, vapor-phase VOCs can be monitored, which had been previously impossible. High-throughput production of the patterned colloidal crystal–polymer composite through the NET process can be applied to other multiplexed selective sensing applications or may be used for nanomolding templates.

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Zeolite/iron oxide composite as sorbent for magnetic solid-phase extraction of benzene, toluene, ethylbenzene and xylenes from water samples prior to gas chromatography⬜mass spectrometry

Cited by 53 publications

References 27 publications

A modified zeolite/iron oxide composite as a sorbent for magnetic dispersive solid-phase extraction for the preconcentration of nonsteroidal anti-inflammatory drugs in water and urine samples

A modified zeolite/iron oxide composite as a sorbent for magnetic dispersive solid-phase extraction for the preconcentration of nonsteroidal anti-inflammatory drugs in water and urine samples

Determination of four bisphenols in water and urine samples by magnetic dispersive solid‐phase extraction using a modified zeolite/iron oxide composite prior to liquid chromatography diode array detection

Ultra-fast responsive colloidal–polymer composite-based volatile organic compounds (VOC) sensor using nanoscale easy tear process

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