Preparation of a novel amino functionalized ion-imprinted hybrid monolithic column for the selective extraction of trace copper followed by ICP-MS detection

Fei, Jia-jun; Wu, Xiaohong; Sun, Yue-lun; Zhao, Lu; Min, Hong Ki; Cui, Xiao‐Bing; Chen, Yijun; Liu, Shu; Lian, Hong-zhen; Li, Chen

doi:10.1016/j.aca.2021.338477

Cited by 30 publications

(16 citation statements)

References 38 publications

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“…23,24 Nevertheless, this can be eliminated by sample pretreatment before analysis and thus, an extraction and preconcentration step is oen pre-requisite to instrumental determination. [25][26][27] Considering the nanoadsorbents, solid phase microextraction and dispersive solid phase microextraction (DSPME) is one among the most promising approach for the separation and preconcentration of metal ions presented at trace or ultra-trace level in complex matrix solutions. [28][29][30][31] Traditional adsorbents such as ion exchange resin, zeolites, activated carbon and clays have been studied for the adsorption of mercury ions.…”

Section: Introductionmentioning

confidence: 99%

Preconcentration and determination of trace Hg(ii) using ultrasound-assisted dispersive solid phase microextraction

2022

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Section: Introductionmentioning

confidence: 99%

Preconcentration and determination of trace Hg(ii) using ultrasound-assisted dispersive solid phase microextraction

2022

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“…The WHO has actually advocated for a more stringent arsenic drinking water standard, with a maximum permitted content of 10 ppb. As(III) is more mobile under aqueous conditions and is significantly more hazardous to humans than As(V). , Because of the low concentration of analyte ions and/or matrix interferences, direct detection of ultratrace As(III) concentrations using spectroscopic techniques remains difficult. − These sophisticated instruments are not sensitive enough to detect low-level concentrations with a complex sample matrix. , The development of trace metal ion measurement methods, on the other hand, could help improve their monitoring and assessment and therefore reduce the occurrence of health problems linked to heavy metal ions. − The quantification of new toxins is a common research topic that may be used to track contamination levels, evaluate control measure effectiveness, and assess biota consequences. − Therefore, to eliminate matrix components and improve the detection limit, sample extraction and preconcentration procedures should be employed.…”

Section: Introductionmentioning

confidence: 99%

“…20−22 These sophis-ticated instruments are not sensitive enough to detect low-level concentrations with a complex sample matrix. 23,24 The development of trace metal ion measurement methods, on the other hand, could help improve their monitoring and assessment and therefore reduce the occurrence of health problems linked to heavy metal ions. 25−27 The quantification of new toxins is a common research topic that may be used to track contamination levels, evaluate control measure effectiveness, and assess biota consequences.…”

Section: ■ Introductionmentioning

confidence: 99%

Selective Extraction of Trace Arsenite Ions Using a Highly Porous Aluminum Oxide Membrane with Ordered Nanopores

et al. 2022

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Metal ion extraction and determination at trace level concentration are challenging due to sample complexity or spectral interferences. Herein, we prepared a through-hole aluminum oxide membrane (AOM) by electrochemical anodization of aluminum substrates. The prepared AOM was characterized by scanning electron microscopy, surface area analysis, porosity measurements, and X-ray photoelectron spectroscopy. The AOM with ordered nanopores was highly porous and possess inherent binding sites for selective arsenite sorption. The AOM was used as a novel sorbent for solid-phase microextraction and preconcentration of arsenite ions in water samples. The AOM’s sub-micrometer thickness allows water molecules to flow freely across the pores. Before instrumental determination, the suggested microextraction approach removes spectral interferents and improves the analyte ion concentration, with a detection limit of 0.02 μg L–1. Analyzing a standard reference material was used to validate the procedure. Student’s t-test value was less than critical Student’s t-value of 4.303 at a 95% confidence level. With coefficients of variation of 3.25%, good precision was achieved.

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“…Several methods are known for the determination of Cu(II) such as atomic absorption spectroscopy, inductively coupled plasma atomic emission spectroscopy, and inductively coupled plasma mass spectrometry . These methods have good stability and accuracy for the determination of Cu(II) in the laboratory.…”

Section: Introductionmentioning

confidence: 99%

Adsorbent-Assisted In Situ Electrocatalysis: Highly Sensitive and Stable Electrochemical Sensor Based on AuNF/COF-SH/CNT Nanocomposites for the Determination of Trace Cu(II)

Pan

Tong

Wang

et al. 2022

ACS Sustainable Chem. Eng.

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The weak conductivity of covalent organic frameworks (COFs) limits their wide application in electrochemical sensors. Here, a novel electrochemical sensor (AuNFs/COF-SH/CNTs/GCE) was designed and constructed by a one-step electrochemical deposition of Au nanoflowers (AuNFs) on a hybrid nanocomposite of sulfhydryl-functional covalent organic framework/carbon nanotubes (COF-SH/CNTs) for the determination of Cu(II) in seawater. AuNFs/COF-SH/CNTs/GCE was prepared in a three-step method including in situ synthesis, post-synthesis, and one-step electrochemical deposition. The adsorption and catalytic performances of the modified electrode were improved based on the mechanism of “adsorption-catalysis stripping determination”. By combining the excellent catalytic properties of the AuNFs with the good adsorption capacity of COF-SH toward Cu(II), as well as the good conductivity of CNTs, the AuNFs/COF-SH/CNTs/GCE exhibited excellent performance for the determination of Cu(II). Through optimization of the experimental conditions, a low detection limit of 0.47 nM and a wide linear range of 1.6 nM-4.7 μM were obtained. Moreover, the sensor possessed good stability with a relative standard deviation of less than 5% after 20 repeated measurements. The results are consistent with certified values when used for the determination of certified reference materials. In summary, the AuNFs/COF-SH/CNTs/GCE, with high stability and sensitivity, has been successfully applied for the determination of Cu(II) in seawater samples with satisfactory results.

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Preparation of a novel amino functionalized ion-imprinted hybrid monolithic column for the selective extraction of trace copper followed by ICP-MS detection

Cited by 30 publications

References 38 publications

Preconcentration and determination of trace Hg(ii) using ultrasound-assisted dispersive solid phase microextraction

Preconcentration and determination of trace Hg(ii) using ultrasound-assisted dispersive solid phase microextraction

Selective Extraction of Trace Arsenite Ions Using a Highly Porous Aluminum Oxide Membrane with Ordered Nanopores

Adsorbent-Assisted In Situ Electrocatalysis: Highly Sensitive and Stable Electrochemical Sensor Based on AuNF/COF-SH/CNT Nanocomposites for the Determination of Trace Cu(II)

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