Preconcentration of phosphate ion onto ion-imprinted polymer

Özkütük, Ebru Birlik; Ersöz, Arzu; Deni̇zli̇, Adil; Say, Rıdvan

doi:10.1016/j.jhazmat.2007.12.118

Cited by 29 publications

(6 citation statements)

References 41 publications

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“…The results show that the LOD values of the proposed method were lower than most of the literature reported methods, except for the ion-imprinted polymer, 40 the MaGnesium Induced Coprecipitation (MAGIC) method, 43 and flow injection analysis methods. 44 The contacting time for adsorption was short.…”

Section: Comparison With Other Preconcentration Methodsmentioning

confidence: 77%

“…Comparisons of the proposed method with literature reported methods 7,[40][41][42][43][44][45][46][47][48] for preconcentration and spectrophotometric determinations of phosphate are summarized in Table 4. The results show that the LOD values of the proposed method were lower than most of the literature reported methods, except for the ion-imprinted polymer, 40 the MaGnesium Induced Coprecipitation (MAGIC) method, 43 and flow injection analysis methods.…”

Section: Comparison With Other Preconcentration Methodsmentioning

confidence: 99%

“…The adsorption amounts were more than 17 times, even 1000-times higher than those reported in the literature. 40,47 The TEPA-NCMs had great potential for the preconcentration of low-level phosphate.…”

Section: Comparison With Other Preconcentration Methodsmentioning

confidence: 99%

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Amino-functionalized Nano-size Composite Materials for Dispersive Solid-Phase Extraction of Phosphate in Water Samples

et al. 2012

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An efficient analytical method for the preconcentration and determination of phosphate in water samples at trace levels was proposed. The method was based on sample enrichment using dispersive solid-phase extraction (dSPE) with tetraethylenepentamine (TEPA)-functionalized nano-size composite materials (TEPA-NCMs) as sorbents, which were fully characterized. Various parameters affecting the extraction efficiency were systematically investigated. After extraction, the post-adsorbed TEPA-NCMs were eluted by a NaOH solution for desorption of the phosphate. The resulting eluate containing phosphate was determined by a spectrophotometric method. The limit of detection (LOD) and the limit of quantification (LOQ) were 0.29 and 0.96 μg L -1 , respectively. The relative standard deviations (RSDs) were lower than 8.0% with average recoveries ranging from 91 to 118%. The present method was successfully applied to the determination of phosphate at trace levels in real water samples, and it was confirmed that the TEPA-NCMs are highly effective dSPE materials.

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Section: Comparison With Other Preconcentration Methodsmentioning

confidence: 77%

Section: Comparison With Other Preconcentration Methodsmentioning

confidence: 99%

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Amino-functionalized Nano-size Composite Materials for Dispersive Solid-Phase Extraction of Phosphate in Water Samples

et al. 2012

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“…The absorption peak around 1601.4 cm −1 disappeared, but a new absorption peak around 1634.7 cm −1 appeared due to the shrinking vibration of C=N, indicating that crosslinking had occurred successfully . The absorption peak around wavenumber 1653.7 cm −1 , which was assigned to the N‐H bending vibration, also disappeared, and could be attributed to the chelation of Cu 2+ and –NH 2 .…”

Section: Resultsmentioning

confidence: 96%

“…After the elution of metal ions, which had been chelated as template ions previously, selective binding sites for target ions were produced . Through imprinted metal ions, these binding sites are capable of recognizing target metal ions quickly and improving adsorption capacity . Therefore, metal ion‐imprinted technology is an effective and reliable method to prepare selective materials and remove target metal ions from wastewater.…”

Section: Introductionmentioning

confidence: 99%

A facile ion imprinted synthesis of selective biosorbent for Cu²⁺ via microfluidic technology

Zhu

Bai

Luo

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND Heavy metal pollution has become one of the most serious environmental problems. Novel approaches are needed for removal of heavy metal from water. Copper, a familiar heavy metal, has attracted much attention for its remarkable toxic domino offect at elevated concentrations. RESULTS A novel ion imprinted approach combined with microfluidic technology was explored. Cu2+ was taken as ionic template and chitosan was used as carrier material. Chemical crosslinking was applied in the formation of imprinted sign. A selective biosorbent of ion‐imprinted microspheres (IIMS) with uniform size, regular shape and high performance for Cu2+ had been prepared. The SEM, FTIR, EDS, XPS were employed to detect their distinct features. IIMS showed much higher adsorption capacity (qm=81.97 mg g−1) than those non‐imprinted chitosan microspheres (CSMS). The adsorption isotherm fitted the Langmuir equation while thermodynamic adsorption results were considered strong proof of an adsorption exothermal process. IIMS exhibited excellent selectivity for Cu2+ when competitive metal ions and Cu2+ co‐existed together, which profited from the specific spaces of Cu2+ template left after crosslinking and desorption. Results confirmed that chemical adsorption was dominant and amino played an important role in adsorption process. CONCLUSION IIMS showed high adsorption capacity and excellent selectivity for Cu2+. Combining microfluidic technology with an ion‐imprinted method proved to be a promising process for preparing selective materials. © 2017 Society of Chemical Industry

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Phosphate‐imprinted polymer as an efficient modifier for the design of ion‐selective electrode

Özkütük

Yıldız

Gündüz

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND In this study, the ion‐selective electrode (ISE) based on ion‐imprinted polymer (IIP) for the determination of phosphate has been described. For selective recognition of IIP, phosphate (analyte–template), chitosan and N‐(2‐aminoethyl)‐3‐aminopropyl‐trimethoxysilan (AAPTS) (functional monomers), ephychlorohydrin and tetraethoxysilicate (TEOS) (cross‐linking agents) were used. RESULTS The electrode was prepared using the IIP. The IIP‐1‐, IIP‐2‐ and IIP‐3‐based membranes showed a detection limit of 7.6 × 10−6, 5.1 × 10−6 and 2.5.10−7 mol L−1, respectively. Attractive features of these IIP‐based ion‐selective electrodes are a rather low detection limit and high selectivity compared with other phosphate molecules. CONCLUSION The proposed method has been applied successfully to analyze phosphate in household waste samples with recoveries of ≥90%. © 2021 Society of Chemical Industry (SCI).

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Preconcentration of phosphate ion onto ion-imprinted polymer

Cited by 29 publications

References 41 publications

Amino-functionalized Nano-size Composite Materials for Dispersive Solid-Phase Extraction of Phosphate in Water Samples

Amino-functionalized Nano-size Composite Materials for Dispersive Solid-Phase Extraction of Phosphate in Water Samples

A facile ion imprinted synthesis of selective biosorbent for Cu²⁺ via microfluidic technology

Phosphate‐imprinted polymer as an efficient modifier for the design of ion‐selective electrode

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Preconcentration of phosphate ion onto ion-imprinted polymer

Cited by 29 publications

References 41 publications

Amino-functionalized Nano-size Composite Materials for Dispersive Solid-Phase Extraction of Phosphate in Water Samples

Amino-functionalized Nano-size Composite Materials for Dispersive Solid-Phase Extraction of Phosphate in Water Samples

A facile ion imprinted synthesis of selective biosorbent for Cu2+ via microfluidic technology

Phosphate‐imprinted polymer as an efficient modifier for the design of ion‐selective electrode

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A facile ion imprinted synthesis of selective biosorbent for Cu²⁺ via microfluidic technology