The effect of the temperature treatment compounds obtained by method co-precipitation zinc and tin (IV) salts on synthesis highly dispersed orthostannate in range 800 – 1300 °C was studied. nonstoichiometric ratio components initial composition phase resulting considered. powders is presented according to data X-ray analysis. Demonstrated chemical reactions occurring during experiment.

Five doped nanosized spinel ferrites were synthesized using the dicarboxylate and hydroxide coprecipitation method. XRD of samples confirmed increase in lattice parameters as compared to undoped samples. Decrease saturation magnetization coercive force are found these

The coprecipitation of U (VI) with iron corrosion products from aqueous solutions by zero valent iron was investigated. The evidence of coprecipitation was demonstrated by conducting experiments with well characterized scrap iron, pyrite and a mixture of both materials with experimental durations of up to four months. Results indicate that under anoxic conditions only less than one tenth of the...

The ammonium sulfate coprecipitation technique of Farr was applied in a study of the purified enterotoxins of Staphylococcus aureus. Ammonium sulfate coprecipitation of iodine-131-labeled enterotoxins A, B, and C, with the use of a 1.6 m concentration of (NH(4))(2)SO(4), revealed differences in the antigen-binding capacity of normal and immune rabbit sera for the enterotoxins. The coprecipitati...

Coprecipitation experiments of Np(V) and U(VI) with calcite were performed in mixed-flow reactors under steady state conditions at room temperature for up to 400 h at precipitation rates of 1.0 × 10-8 to 6.8 × 10-8 mol/(m2 s). The saturation index with respect to calcite varied between 0.04 and 0.95. Initial Np(V) or U(VI) concentrations were 1 μmol/L, 0.01 mol/L NaCl was used as background ele...

Multi-element determination of trace elements in urine and dialysis solutions by atomic absorption spectrometry has been investigated. Coprecipitation with samarium hydroxide was used for preconcentration of trace elements and elimination of matrix elements. To 10 ml of each sample was added 500 mul of 2 mgml(-1) samarium solutions; the pH was then adjusted to 12.2 in order to collect trace hea...