Ion Mobility Spectrometry of Heavy Metals

Ilbeigi, Vahideh; Valadbeigi, Younes; Tabrizchi, Mahmoud

doi:10.1021/acs.analchem.6b01664

Cited by 25 publications

(10 citation statements)

References 33 publications

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“…Ion mobility spectrometry (IMS) is traditionally a simple, fast, and inexpensive technique for the detection of many kinds of important analytes, such as explosives, , abused drugs and alkaloids, − pesticides and insecticides, those used in chemical warfare, heavy metals, environmental pollutants, and biological analytes . Nowadays, the application of this technique has been extended to the gas-phase structural study of many kinds of isomeric systems, supermolecules, weakly bound assemblies, host–guest complexes, and metallosupermolecular complexes. − In IMS, the ions are separated based on their mobilities through a drift gas.…”

Section: Introductionmentioning

confidence: 99%

Small Host–Guest Systems in the Gas Phase: Tartaric Acid as a Host for both Anionic and Cationic Guests in the Atmospheric Pressure Chemical Ionization Source of Ion Mobility Spectrometry

2020

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The ionization of tartaric acid (TA) in an atmospheric pressure chemical ionization corona discharge ion source was studied by ion mobility spectrometry (IMS) with zero air as the drift gas. Density functional theory was used for structural and thermodynamic analyses of the produced ionic clusters. Ion mobility spectra of TA were recorded in both positive and negative modes of CD with and without ammonia and chloroform as dopants in order to produce NH4 + and Cl–, respectively, as the reactant ions (RIs). In the absence of these dopants, the RIs were mainly H3O+ and O2 – in the positive and negative CD, respectively. TA solutions in water and methanol were injected into the ionization region of the IMS instrument, and the product cations TA·H+(H2O) n , TA·H+(CH3OH), TA·NH4 +, and TA·NH4 +(CH3OH) were observed in the positive CD. Anionic clusters (TA-H)−, (TA-H)−·CH3OH, (TA-H)−·TA, TA·Cl–, and (TA)2Cl– were produced in the negative CD. The anions TA·Cl– and (TA)2Cl– were not produced in an air atmosphere, and we observed their peaks when pure oxygen was used as the drift gas. Optimized structures of the clusters showed that TA·NH4 +, TA·Cl–, and (TA)2Cl– are small host–guest systems in the gas phase, with TA as a host. (TA)2Cl– is a weakly bonded complex (an anion-bound dimer) that was observed at atmospheric pressure. The proton-bound dimer TA·H+·TA was not produced in the positive CD, while the anionic dimer (TA-H)−·TA was observed in the negative CD. This phenomenon was interpreted on the basis of the hydration of TA·H+ and (TA-H)−.

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Section: Introductionmentioning

confidence: 99%

Small Host–Guest Systems in the Gas Phase: Tartaric Acid as a Host for both Anionic and Cationic Guests in the Atmospheric Pressure Chemical Ionization Source of Ion Mobility Spectrometry

2020

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“…The thermodynamic adsorption experiment of SF@Cu-NFs was carried out by a typical batch method. First, 7 pieces of 1 mg washed and dried SF@Cu-NFs were added into 7 pieces of 10.0 mL different concentration Pb(II) solutions (5,20,50,80, 100, 400, 500 mg L −1 ) placed in the tube at 298 K, respectively. Then the suspensions were sealed and were vibrated for 2 h at room temperature to ensure the complete adsorption.…”

Section: Adsorption Isotherm Experiments and Adsorption Thermodynamicsmentioning

confidence: 99%

“…[3]. The large amount of Pb(II) discharge in water environment and Pb(II) accumulation in human body can lead to physical defects such as nephropathy, hepatopathy, and encephalopathy [4,5]. Even more, high concentration of lead ions will do harm to children's health [6].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Adsorption-Interaction Mechanism of Pb(II) at Surface of Silk Fibroin Protein-Derived Hybrid Nanoflower Adsorbent

Xiong

Duan

et al. 2020

Materials

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For further the understanding of the adsorption mechanism of heavy metal ions on the surface of protein-inorganic hybrid nanoflowers, a novel protein-derived hybrid nanoflower was prepared to investigate the adsorption behavior and reveal the function of organic and inorganic parts on the surface of nanoflowers in the adsorption process in this study. Silk fibroin (SF)-derived and copper-based protein-inorganic hybrid nanoflowers of SF@Cu-NFs were prepared through self-assembly. The product was characterized and applied to adsorption of heavy metal ion of Pb(II). With Chinese peony flower-like morphology, the prepared SF@Cu-NFs showed ordered three-dimensional structure and exhibited excellent efficiency for Pb(II) removal. On one hand, the adsorption performance of SF@Cu-HNFs for Pb(II) removal was evaluated through systematical thermodynamic and adsorption kinetics investigation. The good fittings of Langmuir and pseudo-second-order models indicated the monolayer adsorption and high capacity of about 2000 mg g−1 of Pb(II) on SF@Cu-NFs. Meanwhile, the negative values of Δ r G m ( T ) θ and Δ r H m θ proved the spontaneous and exothermic process of Pb(II) adsorption. On the other hand, the adsorption mechanism of SF@Cu-HNFs for Pb(II) removal was revealed with respect to its individual organic and inorganic component. Organic SF protein was designated as responsible ‘stamen’ adsorption site for fast adsorption of Pb(II), which was originated from multiple coordinative interaction by numerous amide groups; inorganic Cu3(PO4)2 crystal was designated as responsible ‘petal’ adsorption site for slow adsorption of Pb(II), which was restricted from weak coordinative interaction by strong ion bond of Cu(II). With only about 10% weight content, SF protein was proven to play a key factor for SF@Cu-HNFs formation and have a significant effect on Pb(II) treatment. By fabricating SF@Cu-HNFs hybrid nanoflowers derived from SF protein, this work not only successfully provides insights on its adsorption performance and interaction mechanism for Pb(II) removal, but also provides a new idea for the preparation of adsorption materials for heavy metal ions in environmental sewage in the future.

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“…More recently, it has been employed for the separation of elemental species and speciated forms of d-and f-block metals. [21][22][23][24] In IMS, ions traverse through the drift tube under the influence of a low, static DC electric field. The ion's gas-phase mobility (K, cm 2 s -1 V -1 ) through the tube is a function of their interaction with neutral species in their microscopic environment; measured by the ion-neutral collision cross section (CCS or Ω).…”

Section: ***mentioning

confidence: 99%

Differential Mobility Spectrometry-Mass Spectrometry (DMS-MS) for Uranium Ion Prefiltration to Improve Isotope Ratio Analysis

Ayodeji¹,

Perdomo²,

Shelley³

et al. 2020

Preprint

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Ion Mobility Spectrometry of Heavy Metals

Cited by 25 publications

References 33 publications

Small Host–Guest Systems in the Gas Phase: Tartaric Acid as a Host for both Anionic and Cationic Guests in the Atmospheric Pressure Chemical Ionization Source of Ion Mobility Spectrometry

Small Host–Guest Systems in the Gas Phase: Tartaric Acid as a Host for both Anionic and Cationic Guests in the Atmospheric Pressure Chemical Ionization Source of Ion Mobility Spectrometry

Investigation on the Adsorption-Interaction Mechanism of Pb(II) at Surface of Silk Fibroin Protein-Derived Hybrid Nanoflower Adsorbent

Differential Mobility Spectrometry-Mass Spectrometry (DMS-MS) for Uranium Ion Prefiltration to Improve Isotope Ratio Analysis

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