Preparation and evaluation of solid-phase microextraction fibers based on monolithic molecularly imprinted polymers for selective extraction of diacetylmorphine and analogous compounds

Djozan, Djavanshir; Baheri, Tahmineh

doi:10.1016/j.chroma.2007.08.003

Cited by 124 publications

(45 citation statements)

References 42 publications

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“…101 These monolithic capillaries showed excellent reusability and high stability at extreme pH, due to a low-pressure drop that allowed a high flow-rate to achieve high-throughput, and good binding capacity based on its higher porosity. Furthermore, an imprinted porous polymer monolith fiber coated with home-made capillary glass 102 and poly(ST-DVB) carbon monolith fiber carbonized by heating the porous polymer 103 showed higher extraction efficiency than other commercially available SPME fibers. More recently, a boronate affinity monolith, 104,105 and C18 and titania-coated silica monolithic tips, 106 as sorbents for PMME, were used for the selective extraction of hydrophilic proteins and phosphopeptides from biological samples.…”

Section: ·3 In-tube Spme Techniquesmentioning

confidence: 94%

Current Developments and Future Trends in Solid-phase Microextraction Techniques for Pharmaceutical and Biomedical Analyses

Kataoka

2011

ANAL. SCI.

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Section: ·3 In-tube Spme Techniquesmentioning

confidence: 94%

Current Developments and Future Trends in Solid-phase Microextraction Techniques for Pharmaceutical and Biomedical Analyses

Kataoka

2011

ANAL. SCI.

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“…Sample pH affects the binding interactions including hydrogen bonding and ionic interactions between the analytes and the MIP monolith, and thus influences the adsorption efficiency of DMIP-SPE [26][27][28]. Therefore, the effect of sample pH on the recovery of OH-PCBs was tested in the pH range of 3.0-11.0.…”

Section: Effect Of Sample Phmentioning

confidence: 99%

Determination of hydroxylated polychlorinated biphenyls by offline solid-phase extraction-liquid chromatography–tandem mass spectrometry using a molecularly imprinted polymer as a sorbent for sample preconcentration

Liang

Zhao

et al. 2015

Talanta

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a b s t r a c tHydroxylated polychlorinated biphenyls (OH-PCBs) can be detected by liquid chromatography-mass spectrometry coupled to solid-phase extraction (SPE) using a dummy molecularly imprinted polymer (DMIP) as a sorbent. The DMIP is prepared by using an analogue of OH-PCBs (i.e., 4, 4-dihydroxybiphenyl) as a dummy template, to avoid the leakage of the target molecules. The DMIP-SPE sorbent shows good recoveries for OH-PCBs at pH 11 due to the charge-assisted hydrogen bondings between OH-PCBs and the DMIP. It has been found that the DMIP is much more effective and selective than the traditional C 18 -SPE method. The sample pH, polymer dosage, elution solvent and volume have been optimized for higher recoveries. Under the optimum experimental conditions, OH-PCBs can be detected in the linear concentration range of 0.05-1.0 pM, with the detection limits ranging from 11 fM to 82 fM for 4′-OH-CB 9, 4′-OH-CB 30, 4′-OH-CB 61, 4′-OH-CB 106 and 4′-OH-CB 112. The proposed system has been successfully applied to the determination of trace OH-PCBs in spiked water samples with recoveries in the range of 89-110%.

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“…Koster et al described for the first time the preparation of a MIP-coated silica fibre for the SPME of brombuterol from human urine [6]. Later, Martín-Esteban and coworkers [7,8] and Djozan and Baheri [9] proposed another approach, where the MIP fibre is prepared inside fused silica capillaries. Just recently, the use of a hollow fibre (HF) membrane to protect the MIPs was described in the literature [10].…”

Section: Introductionmentioning

confidence: 99%

Hollow Fibre Membrane-Protected Molecularly Imprinted Microsolid-Phase Extraction (HFM-Protected-MI-MSPE) of Triazines from Soil Samples

2018

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Abstract:In this work, a combination of molecularly imprinted polymer (MIP) technology with micro solid-phase extraction in a hollow fibre device is described. MIP microspheres were synthesized and packed into polypropylene hollow fibre (HF) segments. The proposed device was used directly for trace enrichment and clean-up of triazines in soil sample extracts by hollow-fibre membrane-protected molecularly imprinted micro solid-phase extraction (HFM-protected-MI-MSPE). Analytes were extracted from soil by ultrasonic assisted extraction, evaporated to dryness and reconstituted in toluene. The proposed device was immersed in the toluene extracts, and migrations of analytes through the walls of the hollow fibre was achieved with the help of external agitation. Then, selective recognition of the target analytes by MIP-microspheres took place in the inner part of the HF. All parameters affecting the extraction were optimized. Under optimum conditions, quantitative recoveries were obtained for simazine, cyanazine, atrazine, propazine and terbutylazine in soil samples, with relative standard deviations lower than 11%. The detection limits (LODs) were lower than 5 ng g −1 in all cases.

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Preparation and evaluation of solid-phase microextraction fibers based on monolithic molecularly imprinted polymers for selective extraction of diacetylmorphine and analogous compounds

Cited by 124 publications

References 42 publications

Current Developments and Future Trends in Solid-phase Microextraction Techniques for Pharmaceutical and Biomedical Analyses

Current Developments and Future Trends in Solid-phase Microextraction Techniques for Pharmaceutical and Biomedical Analyses

Determination of hydroxylated polychlorinated biphenyls by offline solid-phase extraction-liquid chromatography–tandem mass spectrometry using a molecularly imprinted polymer as a sorbent for sample preconcentration

Hollow Fibre Membrane-Protected Molecularly Imprinted Microsolid-Phase Extraction (HFM-Protected-MI-MSPE) of Triazines from Soil Samples

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