The Opposite Effect of Metal Ions on Short-/Long-Range Water Structure: A Multiple Characterization Study
AbstractInorganic electrolyte solutions are very important in our society as they dominate many biochemical and geochemical processes. Herein, an in-depth study was performed to illustrate the ion-induced effect on water structure by coupling NMR, viscometer, Raman and Molecular Dynamic (MD) simulations. The NMR coefficient (BNMR) and diffusion coefficient (D) from NMR, and viscosity coefficient (Bvis) from a viscometer all proved that dissolved metal ions are capable of enhancing the association degree of adjacent water molecules, and the impact on water structure decreased in the order of Cr3+ > Fe3+ > Cu2+ > Zn2+. This regularity was further evidenced by Raman analysis; however, the deconvoluted Raman spectrum indicated the decrease in high association water with salt concentration and the increase in low association water before 200 mmol·L−1. By virtue of MD simulations, the opposite changing manner proved to be the result of the opposite effect on short-/long-range water structure induced by metal ions. Our results may help to explain specific protein denaturation induced by metal ions. View Full-Text
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Ma, K.; Zhao, L. The Opposite Effect of Metal Ions on Short-/Long-Range Water Structure: A Multiple Characterization Study. Int. J. Mol. Sci. 2016, 17, 602.
Ma K, Zhao L. The Opposite Effect of Metal Ions on Short-/Long-Range Water Structure: A Multiple Characterization Study. International Journal of Molecular Sciences. 2016; 17(5):602.Chicago/Turabian Style
Ma, Kai; Zhao, Lin. 2016. "The Opposite Effect of Metal Ions on Short-/Long-Range Water Structure: A Multiple Characterization Study." Int. J. Mol. Sci. 17, no. 5: 602.
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