Metal Ion Toxicity

Crisponi, Guido; Nurchi, Valeria Marina

doi:10.1002/9781119951438.eibc0126.pub2

Cited by 11 publications

(10 citation statements)

References 27 publications

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“…Cobalt was found to form an octahedral complex with EDTA, again due to its large ionic radius and the presence of 6 readily accessible donor groups, and thus is expected to have a higher binding energy to EDTA than Be 2+ , a result supported by experimental data. 47,48 A square planar complex was observed to form with Co 2+ and 10-HBQS, with a s 4 value of 0.10 being very close to that of the ideal square planar geometry. Finally, to HL-NH 2 , Co 2+ took a conformation closest to a seesaw geometry (s 4 ¼ 0.65 and s 0 4 ¼ 0:44), in this complex only one hydrogen bond forms (O/H ¼ 2.04Å).…”

Section: Metal Binding Studymentioning

confidence: 84%

Towards more effective beryllium chelation: an investigation of second-sphere hydrogen bonding

et al. 2020

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Section: Metal Binding Studymentioning

confidence: 84%

Towards more effective beryllium chelation: an investigation of second-sphere hydrogen bonding

et al. 2020

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“…We chose Zn and Fe ions because they are vital nutrients with significant daily allowances for human health (Zn: 15 mg and Fe: 10−20 mg). 41 Also, Al ions were included due to their established role as ionic cross-linkers in hydrogel production, which is a common practice in the cosmetics and personal care industry. 42 Transmission electron microscopy (TEM) images of TiO 2 -MPN NPs, TiO 2 -TA-Zn (Figure 2b), TiO 2 -TA-Al (Figure 2d), and TiO 2 -TA-Fe NPs (Figure 2f) showed a uniform MPN layer of 3−5 nm in thickness.…”

Section: Preparation Of Tio 2 -Mpn Npsmentioning

confidence: 99%

Photochemically Inert Broad-Spectrum Sunscreen by Metal-Phenolic Network Coatings of Titanium Oxide Nanoparticles

Choi,

Rahman,

Kim

et al. 2024

ACS Appl. Mater. Interfaces

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Titanium dioxide (TiO 2 ) nanoparticles are extensively used as a sunscreen filter due to their long-active ultraviolet (UV)-blocking performance. However, their practical use is being challenged by high photochemical activities and limited absorption spectrum. Current solutions include the coating of TiO 2 with synthetic polymers and formulating a sunscreen product with additional organic UV filters. Unfortunately, these approaches are no longer considered effective because of recent environmental and public health issues. Herein, TiO 2 -metal-phenolic network hybrid nanoparticles (TiO 2 -MPN NPs) are developed as the sole active ingredient for sunscreen products through photochemical suppression and absorption spectrum widening. The MPNs are generated by the complexation of tannic acid with multivalent metal ions, forming a robust coating shell. The TiO 2 -MPN hybridization extends the absorption region to the high-energy-visible (HEV) light range via a new ligand-to-metal charge transfer photoexcitation pathway, boosting both the sun protection factor and ultraviolet-A protection factor about 4-fold. The TiO 2 -MPN NPs suppressed the photoinduced reactive oxygen species by 99.9% for 6 h under simulated solar irradiation. Accordingly, they substantially alleviated UV-and HEV-induced cytotoxicity of fibroblasts. This work outlines a new tactic for the eco-friendly and biocompatible design of sunscreen agents by selectively inhibiting the photocatalytic activities of semiconductor nanoparticles while broadening their optical spectrum.

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“…The mined amount of mercury has been almost constant over the centuries until 1500, when huge amounts were produced in Spain (Almaden) to be shipped to Spanish South America for silver extraction. A paper by Hylander and Meili [ 16 ], takes into account the trend in mercury production from this period to 2000. The discovery of gold in California in 1850 produced a jump in mercury production, as well as its use in chlor-alkali plants in the 20th century.…”

Section: Mercury Toxicity and Intoxicationmentioning

confidence: 99%

Mercury Toxicity and Detection Using Chromo-Fluorogenic Chemosensors

2021

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Mercury (Hg), this non-essential heavy metal released from both industrial and natural sources entered into living bodies, and cause grievous detrimental effects to the human health and ecosystem. The monitoring of Hg2+ excessive accumulation can be beneficial to fight against the risk associated with mercury toxicity to living systems. Therefore, there is an emergent need of novel and facile analytical approaches for the monitoring of mercury levels in various environmental, industrial, and biological samples. The chromo-fluorogenic chemosensors possess the attractive analytical parameters of low-cost, enhanced detection ability with high sensitivity, simplicity, rapid on-site monitoring ability, etc. This review was narrated to summarize the mercuric ion selective chromo-fluorogenic chemosensors reported in the year 2020. The design of sensors, mechanisms, fluorophores used, analytical performance, etc. are summarized and discussed.

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Metal Ion Toxicity

Abstract: General principles of metal ion toxicity in humans are discussed including comparative stabilities with a variety of ligands and interdependencies among metal ions. Short reviews are presented for lead, mercury, cadmium, chromium, beryllium, cobalt, nickel, and actinides.

Cited by 11 publications

References 27 publications

Towards more effective beryllium chelation: an investigation of second-sphere hydrogen bonding

Towards more effective beryllium chelation: an investigation of second-sphere hydrogen bonding

Photochemically Inert Broad-Spectrum Sunscreen by Metal-Phenolic Network Coatings of Titanium Oxide Nanoparticles

Mercury Toxicity and Detection Using Chromo-Fluorogenic Chemosensors

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