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CeO2 nanocrystallines were prepared by homogeneous complexed-precipitation method, using cerous nitrate and ammonium tartrate as raw materials. The effects of cerous tartrate complex compound and the way of producing precipitation on the particle size of samples were investigated. The samples were characterized by XRD, TEM and SEM. The SEM micrograph shows(More)
A new catalytic kinetic spectrophotometry method for the determination of trace manganese based on the oxidation reaction of H2O2 with methylthymol blue in Na2B4O7-NaOH medium has been developed. The range of the determination range was 0.20-40.00 microg x L(-1). The apparent activation energy and apparent rate constant were 73.24 kJ x mol(-1) and 5.62 x(More)
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