Adsorption Behavior of Metal Ions onto a Bovine Serum Albumin (BSA) Membrane Monitored by Means of an Electrode-Separated Piezoelectric Quartz Crystal

Mizuno, Chikaaki; Bao, Shanhu; Hinoue, Teruo; Nomura, Toshiaki

doi:10.2116/analsci.21.281

Cited by 19 publications

(6 citation statements)

References 23 publications

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“…The U–N bond length is longer than the lengths of other metal–nitrogen cations (i.e., Zn 2+ , Mg 2+ , Al 3+ , and Fe 3+ ions), leading to a depth effect for nitrogen combined with U VI ions. In summary, we proposed that the adsorption amount of U VI was mainly affected by Na + , Zn 2+ , Mg 2+ , and Ni 2+ ions in the coexisting ion aqueous solutions . Meanwhile, we also investigated the effect of individual ions on the removal efficiency of U VI by GO–BSA composites in aqueous solutions.…”

Section: Resultsmentioning

confidence: 97%

Bovine Serum Albumin-Coated Graphene Oxide for Effective Adsorption of Uranium(VI) from Aqueous Solutions

Yang

Liu

et al. 2017

Ind. Eng. Chem. Res.

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Graphene oxide (GO) was modified by a carbodiimide-induced covalent cross-linking with bovine serum albumin (BSA), enriched with numerous amino and carboxyl functional groups, for radioactive uranium (U VI ) removal. The adsorbent was confirmed through scanning electron microscopy, transmission electron microscopy, Fourier transform infrared, X-ray diffraction, atomic force microscopy, and X-ray photoelectron spectroscopy (XPS). We investigated the effect of factors such as the pH, contact time, and initial concentration on the adsorption of U VI . In this work, the adsorption process closely fitted the Langmuir isotherm model, and pseudo-second-order indicates that chemical adsorption dominates the adsorption process of U VI onto GO− BSA composites. These results show that the optimal adsorption amount of U VI of GO− BSA composites was 389 mg g −1 at 298.15 K, pH = 6, C 0 = 200 mg L −1 , and t = 80 min. According to kinetics and the thermodynamic model as well as XPS analysis of pre-and postadsorption of U VI , we propose that the adsorption behavior of U VI onto GO−BSA adsorbent is divided into two stages: (1) chelation of the organic functional groups onto the surface of GO−BSA with U VI ; (2) movement of U VI into the interior of the material after adsorption onto the surface. Moreover, the composites exhibit good adsorption efficiency in simulated seawater, indicating the potential of GO−BSA composites for U VI removal from seawater.

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Section: Resultsmentioning

confidence: 97%

Bovine Serum Albumin-Coated Graphene Oxide for Effective Adsorption of Uranium(VI) from Aqueous Solutions

Yang

Liu

et al. 2017

Ind. Eng. Chem. Res.

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“…We also applied membrane-based centrifugal ltration (molecular weight cut-off 3 kDa) as a general strategy to study the dissolution behavior of QD705. [41][42][43] This showed that even though the Te species released from the dissolution of QD705 were probably anionic, their adhesion to biomolecules was weak relative to that of cationic species, 44 with a À12% difference in slope (slope ¼ 0.8789) between the expected and measured ratios in the samples containing 0.5% rat serum (Fig. S6, ESI †).…”

Section: Establishment Of the Chemical Differentiation Methodsmentioning

confidence: 96%

Selective chemical vaporization of exogenous tellurium for characterizing the time-dependent biodistribution and dissolution of quantum dots in living rats

Cheng

Sun

2015

J. Anal. At. Spectrom.

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“…Aer differentiating the diffusible ion species in samples prepared at various concentration ratios of Ag + /Ag total , Cd 2+ /Cd total , and TeO 3 2À / Te total (the total concentration for each element, including both the spiked metal ions and the intact MNMs), the slopes between the expected and practically measured ratios (ideally the value should be 1) for Ag + /Ag total , Cd 2+ /Cd total , and TeO 3 2À /Te total were 0.0008, 0.5726, and 0.8789, respectively. These values revealed that, due to interactions between the cationic metal species and sulfur-or phosphorus-containing compounds that were excluded by the 3 kDa membranes, 20,[134][135][136][137][138] the ability to use a physical size-discrimination strategy to separate diffusible metal ion species in the presence of an abundance of biomolecules was suppressed signicantly, especially for cationic Ag + and Cd 2+ species. Even though TeO 3 2À , a candidate species evaluated for QD dissolution, is anionic, and its binding to biomolecules should be relatively weak, 136 there was still an error of 12% between the expected and measured ratios when using the ultraltration method.…”

Section: Ultraltrationmentioning

confidence: 99%

Considerations of inductively coupled plasma mass spectrometry techniques for characterizing the dissolution of metal-based nanomaterials in biological tissues

Sun

2015

J. Anal. At. Spectrom.

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Dissolution of metal-based nanomaterials (MNMs) leads to the release of metal ion species; this phenomenon is a major concern affecting the widespread application of MNMs because it can affect their subsequent biodistribution patterns and toxic responses toward living biological systems. It is crucial that we thoroughly understand the dissolution behavior and chemical fate-and associated health effects-of MNMs when assessing their safety considerations. To date, however, quantitative characterization of the transformations of MNMs within living animal bodies has remained a methodological challenge. In this Review, we address the technical issues, the state of the art, and the limitations of currently available sample preparation procedures, as well as the various differentiation schemes coupled with inductively coupled plasma mass spectrometry (ICP-MS) techniques for analysis, that have been employed to reveal MNM dissolution in complicated biological tissue samples. In addition, we highlight the importance of developing new analytical strategies for ICP-MS to facilitate unbiased investigations into the dissolution behavior of MNMs with respect to their long-term biological effects and nanotoxicological properties. 4MNMs through recapitulation of known toxic mechanisms at cellular levels. 17 The transformations and fates of MNMs are very complex, but can be classified broadly into two states: residual nanostructures and released metal ion species. 19,20 When they remain in the form of intact nanoparticulate matter, MNMs in biological systems can adhere to organ cells to influence membrane properties or penetrate into intracellular space to interrupt normal cell functions; alternatively, after they have dissolved, their ionic species can inactivate or compromise the functionality of vital enzymes. 15 Therefore, if exposed MNMs persist or do not meet the criteria for being excreted via renal and hepatic clearance, 21-23 it is believed that the physiological responses to MNMs finally should be similar to the species associated to their chemical compositions. 24 For QDs, for example, concerns about their toxicity are attributed mainly to their degradation and release of notorious heavy metals (e.g., Cd ions), despite several QD toxicity studies having demonstrated minimized adverse effects in living rats and primates. 25-27 Accordingly, the dissolution of MNMs is dependent on the metal ions' solubility and association with available ligands in a given aqueous medium (possessing various ionic strengths, pH, and existing biological molecules), the concentration gradient between the particle's surfaces and the phase of the bulk solution, and the aggregation states of the MNMs. MNMs of smaller sizes and higher surface-to-volume ratios can also display peculiar physicochemical properties that are responsible for their reactivity, dissolution, and interactions with biological components. 24,28 In addition, reactive oxygen species generated during their metabolic processes can also accelerate the dissolution effects of MNMs...

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Adsorption Behavior of Metal Ions onto a Bovine Serum Albumin (BSA) Membrane Monitored by Means of an Electrode-Separated Piezoelectric Quartz Crystal

Cited by 19 publications

References 23 publications

Bovine Serum Albumin-Coated Graphene Oxide for Effective Adsorption of Uranium(VI) from Aqueous Solutions

Bovine Serum Albumin-Coated Graphene Oxide for Effective Adsorption of Uranium(VI) from Aqueous Solutions

Selective chemical vaporization of exogenous tellurium for characterizing the time-dependent biodistribution and dissolution of quantum dots in living rats

Considerations of inductively coupled plasma mass spectrometry techniques for characterizing the dissolution of metal-based nanomaterials in biological tissues

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