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Analysis of the EXAFS data provides an average Cr-O interatomic distance and Debye-Waller factor of 0.165 and 0.0053 nm, respectively, which are in good agreement with those for the chromate anion in Na 2 CrO 4 -4H 2 O. These results, in combination with the previous ones of Hawkins et...
The infrared spectrum of a mineral is a characteristic feature, which permits the identification of mineral species. The absorption bands arise from vibrations of the atoms or ions in the structure, and the frequencies of vibrations are dependent on the mass of the atoms, the restraining forces ...
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One suggestion for the loss of protection against further oxidation is the volatilization of Cr by the formation of volatile Cr-bearing species such as CrO3 [27, 28] and/or oxy-hydroxide CrO2(OH)2 [26, 29]. The volatilization of Cr leads to its depletion in the oxide layer and the ...
2020). Chromium discharged into environment mainly exists in the form of Cr(III) and Cr(VI) (Miretzky and Cirelli, 2010). Cr(VI) not only forms highly toxic compounds, such as HCrO4−, CrO42− and Cr2O72−, which has a long life-span in the environment, it is also a ...
The immune-inflammatory response is associated with increased nitro-oxidative stress. The aim of this mechanistic review is to examine: (a) the role of redox-sensitive transcription factors and enzymes, ROS/RNS production, and the activity of cellular an
Interestingly, the reductive efficiency (RE) of Cr(VI) in water was appreciably higher than that in ice. Thus, it was proposed that the migration ability of FRs in water is distinctly higher than that in ice, likely because the migration performance of FRs is closely related to the ...
The oxidation state of a transition metal in a crystal lattice is conventionally viewed as reflecting physical ionization: electrons have been transferred to or from the atom, leaving a point-like charged entity (ion). Such a picture is still sometimes i
The effect of indices of crystal facets on the properties of nanomaterials has attracted widespread interest. However, the synthesis of silver chloride (Ag