Authors:D. Chaliampalias, G. Vourlias, E. Pavlidou, and K. Chrissafis
temperature where the oxidation rate is high resulted in the delamination of a significant part of the as-formed oxide because of the thermal expansion coefficient mismatch between the different types of ironoxides formed in the scale [ 14 ]. This was also
mineral cerussite (lead carbonate) from the deposit in Kazakhstan which is close in composition to the commonly used synthetic lead white, and hematite (ironoxide Fe 2 O 3 ), which is currently sourced from iron ore deposits in the Kirov Rog area of
Authors:Mona M. Fawzy, Mohamed S. Kamar, and Gehad M. Saleh
fluorite grains and their associations 4.2.6 Ironoxide minerals (Jarosite) It is a hydrous sulfate mineral with potassium and iron; it is formed in the ore deposits by the oxidation of iron sulfides. The studied jarosite grains have yellowish to reddish
Series of basic sulphates which were precipitated by the hydrolysis of Fe(OH)SO4 in the presence and absence of metallic iron were studied from compositional, crystallographic and thermal decomposition points of view. The results are presented and discussed. It was found that high pure iron oxides as well as high grade red iron oxide pigments can be obtained by agitating the basic sulphates in hot ammonical medium followed by roasting. Commercial exploitation of the results is suggested.
Sentinel lymph node detection is widely used to identify lymph nodes that receive lymphatic drainage from a primary tumor.
99mTc labeled iron oxide nanoparticles were prepared to invent a new colorful radioactive agent for sentinel lymph node detection.
Iron oxide nanoparticles were produced by co-precipitation of FeCl3 and FeCl2 in the presence of NaOH. Then iron oxide nanoparticles were labeled with 99mTc. 99mTc labeled nanoparticles (7.4 MBq/0.1 mL) were intradermally injected in the distal hind limb of 16 rabbits. Dynamic and static
lymphoscintigraphic images were taken for 24 h. Labeling efficiencies of 99mTc-iron oxide nanoparticles were over 99%. Their sizes are between 50 and 60 nm. 99mTc-iron oxide nanoparticles were accumulated in the popliteal lymph node in 11 of 16 rabbits (69%). Retention of nanoparticles
in the popliteal lymph node was obvious at from 2nd through 24th hours. The radioactive lymph node was identified easily by
gamma probe. The popliteal lymph node was excised and established for radioactivity and black dye. These black and radioactive
nanoparticles may be potential agent successfully used for sentinel lymph node detection.
Authors:V. Kadwad, N. Jyotsna, N. Sivaprasad, and P. Sinha
An easy adoptable technique has been developed to prepare magnetizable cellulose by the process of wet grinding of a mixture of iron oxide (magnetite) and cellulose in a stirred ball mill. Anti rabbit IgG was covalently coupled to this magnetizable cellulose. The immunosorbent thus prepared has been used in radioimmunoassays of T3 and T4 for the separation of bound and free antigens. The reliability of the above immunosorbent has been validated by studying assay parameters such as non-specific binding (NSB), maximum binding (B0), CV etc. The single step process of wet grinding adopted here not only firmly binds magnetite and cellulose physically, but also lowers the size of the resulting magnetizable cellulose. The conventional method of preparation involves the coprecipitation of cellulose dissolved in cuprammonium hydroxide solution along with iron oxide, followed by extensive grinding and sieving of the iron oxide impregnated cellulose.
The curing and adsorption behaviors of an epoxy/amidoamine system under the influence of iron, aluminum, and zinc oxides are studied by using differential scanning calorimetry (DSC) and diffuse reflectance infrared spectroscopy (DRIFT). From DRIFT, it is obtained that the amidoamine curing agent is preferentially adsorbed on the three metal oxide surfaces. The amount of amidoamine adsorbed is in the order of iron oxide>zinc oxide>aluminum oxide. Moreover, the iron and zinc oxides adsorb resins more firmly than the aluminum oxide. The results of DSC analyses indicate that more amine related exotherms are found in the specimen filled with the iron oxide but more amide related exotherms are found in the zinc oxide added specimens and they are related to the difference in the preferential adsorption found on three metal oxides. The curing characteristics are also changed in the presence of metallic fillers and the greatest change is obtained from the specimen containing the iron oxide.
Authors:J. Orewczyk, S. Jasieńska, J. Pacyna, T. Skrzypek, and S. Iwanczenko
Application of thermal analysis to determine a quantity portion of iron oxides in symmetric blast furnace sinters is presented.
In the multicomponent sample, calcium ferrites and many silicate phases beside doped iron oxides phases were observed.
The dependence of sinter phase composition from basicity and relation with physicochemical properties is defined.
In machine drawn weldor safety glasses with a different protection grade and a total iron oxide content of 6.8–9.5% the lattice
coordination of iron and the Fe2+/Fetot ratio were determined by Mössbauer spectroscopy. In combination with electron beam microanalysis and specific sample preparation,
homogeneity disturbances were observed inside the defect glass as well as on its surface.