An iron(II) solution is often used as a reducing agent in titrimetry and standardized with cerium(IV) or potassium dichromate. Such an iron(II) standard solution is needed for not only titrimetric analyses, but also instrumental ones. Iron(II) is unstable even in a highly acidic solution, mainly due to air-oxidation; therefore, its standardization is required before use. In the present study...

We optimized proton-induced X-ray emission (PIXE) for tissue analysis in a toxicity-disposition study. We used cultured rabbit renal slices as the biological system to demonstrate the use of PIXE analysis. The renal slices were exposed to HgCl2, CdCl2, K2Cr2O7, or NaAsO2 alone or in a mixture. The PIXE analysis provides information on concentrations of elements above atomic number 11, and it is...

conclusions the observations suggest that simv may have a protective effect against cr(vi)-induced oxidative stress in the rat lung. background chromium is a naturally occurring heavy metal found in the environment. objectives the aim of the present study was to determine the effect of simvastatin (simv) on sodium dichromate [cr(vi)]-induced oxidative stress in the rat lung. materials and metho...

In the cation of the title salt, (C(12)H(14)N(2))[Cr(2)O(7)], the two pyridinium moieties are in an anti orientation with respect to one another. The dihedral angle between the pyridine rings is 6.3 (2)°. The N-C-C-N torsion angle is 177.5 (2)°. In the dianion, the Cr(VI) ions are in a slightly distorted tetra-hedral coordination environment and the bond angles at the independent Cr(VI) ions ar...

Supramolecular 3D Zn(II) coordination polymer {[Zn(bim)(bdc)]⋅0.8DMF⋅0.4EtOH⋅0.1H2O }n (Zn-MOF), constructed from Zn2+ ions, bis(imidazol-1-yl)methane (bim) and terephthalate (bdc2−) anions, was synthesized structurally characterized. Zn-MOF crystallizes in the tetragonal crystal system, space group P42/n. Each ion coordinates two neutral bim molecules a bridging bidentate mode via nitrogen ato...

results the level of gsh significantly decreased. in contrast, the plasma level of mda significantly increased in a dose dependent manner in crvi-treated rats, when compared to control animals. simv had no effect on the biochemical parameters when compared to control rats, but significantly increased gsh concentration and decreased mda level in crvi-treated rats. materials and methods sixty-fou...