Imidazole functionalized organic monoliths for capillary microextraction of Co(II), Ni(II) and Cd(II) from urine prior to on-line ICP-MS detection

Liu, Xiaolan; Suo, Feiya; He, Man; Chen, Beibei; Hu, Bin

doi:10.1007/s00604-017-2087-5

Cited by 13 publications

(1 citation statement)

References 31 publications

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“…The analytical merits of the proposed method were compared with those of other methods. [38][39][40][41][42][43] As shown in Table 3, the DLs of this method are lower than previously published reports. The RSDs are superior or similar to other methods.…”

Section: Characterization Of Material the Morphologies Of G-c3n4mentioning

confidence: 46%

Dispersive Micro-solid Phase Extraction with Fibrous TiO2@g- C3N4 Nanocomposites Coupled with ICP-MS for the Determination of Cobalt and Nickel in Environmental and Biological Samples

Chen¹,

Liu²,

Yan³

et al. 2020

At.Spectrosc.

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In this work, fibrous TiO2@g-C3N4 nanocomposites (FTGCNCs) were used for dispersive micro-solid phase extraction of Co and Ni prior to their determination by inductively coupled plasma mass spectrometry. As a new adsorbent, the surface on FTGCNCs have rich functional groups such as-NH2,-NH-and =N-, which can selectively adsorb target ions. The adsorption behaviors of Co and Ni on FTGCNCs were investigated. The results indicated that the analytes were quantitatively retained on FTGCNCs in the pH range of 5.0-8.0 and eluted completely with 1.0 mL of 0.5 mol L-1 HNO3 solution. The main factors influencing the preconcentration and determination of the analytes were investigated in detail, including the pH of the sample solution, dosage of adsorbent, extraction/elution time, elution parameters and sample volumes. Under the optimum conditions, the detection limits of this method were 0.12 pg mL-1 and 1.34 pg mL-1 for Co and Ni, respectively. The relative standard deviations were 3.9% for Co and 4.8% for Ni (n=9, c=1.0 ng mL-1). This method was used for the determination of trace/ultra-trace Co and Ni in environmental water samples with satisfactory results. In order to verify this method, three certified reference materials of stream sediment, human hair and mussel were analyzed using the proposed method, and the determined results were in agreement with the certified values.

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Section: Characterization Of Material the Morphologies Of G-c3n4mentioning

confidence: 46%

Dispersive Micro-solid Phase Extraction with Fibrous TiO2@g- C3N4 Nanocomposites Coupled with ICP-MS for the Determination of Cobalt and Nickel in Environmental and Biological Samples

Chen¹,

Liu²,

Yan³

et al. 2020

At.Spectrosc.

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Zwitterion-functionalized polymer microspheres as a sorbent for solid phase extraction of trace levels of V(V), Cr(III), As(III), Sn(IV), Sb(III) and Hg(II) prior to their determination by ICP-MS

et al. 2018

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This paper describes the preparation of zwitterion-functionalized polymer microspheres (ZPMs) and their application to simultaneous enrichment of V(V), Cr(III), As(III), Sn(IV), Sb(III) and Hg(II) from environmental water samples. The ZPMs were prepared by emulsion copolymerization of ethyl methacrylate, 2-diethylaminoethyl methacrylate and triethylene glycol dimethyl acrylate followed by modification with 1,3-propanesultone. The components were analyzed by elemental analyses as well as Fourier transform infrared spectroscopy, and the structures were characterized by scanning electron microscopy and transmission electron microscopy. The ZPMs were packed into a mini-column for on-line solid-phase extraction (SPE) of the above metal ions. Following extraction with 40 mM NHNO and 0.5 M HNO solution, the ions were quantified by ICP-MS. Under the optimized conditions, the enrichment factors (from a 40 mL sample) are up to 60 for the ions V(V), As(III), Sb(III) and Hg(II), and 55 for Cr(III) and Sn(IV). The detection limits are 1.2, 3.4, 1.0, 3.7, 2.1 and 1.6 ng L for V(V), Cr(III), As(III), Sn(IV), Sb(III) and Hg(II), respectively, and the relative standard deviations (RSDs) are below 5.2%. The feasibility and accuracy of the method were validated by successfully analyzing six certified reference materials as well as lake, well and river waters. Graphical abstract Zwitterion-functionalized polymer microspheres (ZPMs) were prepared and packed into a mini-column for on-line solid-phase extraction (SPE) via pump 1. Then V(V), Cr(III), As(III), Sn(IV), Sb(III) and Hg(II) ions in environmental waters were eluted and submitted to ICP-MS via pump 2.

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A monolithic copolymer prepared from N-(4-vinyl)-benzyl iminodiacetic acid, divinylbenzene and N,N′-methylene bisacrylamide for preconcentration of cadmium(II) and cobalt(II) from biological samples prior to their determination by ICP-MS

Wang

Chi

et al. 2019

Microchim Acta

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Imidazole functionalized organic monoliths for capillary microextraction of Co(II), Ni(II) and Cd(II) from urine prior to on-line ICP-MS detection

Cited by 13 publications

References 31 publications

Dispersive Micro-solid Phase Extraction with Fibrous TiO2@g- C3N4 Nanocomposites Coupled with ICP-MS for the Determination of Cobalt and Nickel in Environmental and Biological Samples

Dispersive Micro-solid Phase Extraction with Fibrous TiO2@g- C3N4 Nanocomposites Coupled with ICP-MS for the Determination of Cobalt and Nickel in Environmental and Biological Samples

Zwitterion-functionalized polymer microspheres as a sorbent for solid phase extraction of trace levels of V(V), Cr(III), As(III), Sn(IV), Sb(III) and Hg(II) prior to their determination by ICP-MS

A monolithic copolymer prepared from N-(4-vinyl)-benzyl iminodiacetic acid, divinylbenzene and N,N′-methylene bisacrylamide for preconcentration of cadmium(II) and cobalt(II) from biological samples prior to their determination by ICP-MS

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