Method for precisely determining plutonium
A precision and titration technology, applied in the field of plutonium analysis, can solve the problems of many kinds of reagents added, complicated operation process, large amount of waste liquid, etc., and achieve the effect of accurate and reliable measurement results, simple operation process and less radioactive waste liquid
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[0018] Carry out precise analysis of plutonium content according to the experimental analysis procedures and selected conditions, and use potentiometric titration method to determine the plutonium content in the plutonium solution. The specific operation process is as follows:
[0019] Weigh the plutonium solution containing about 5.0mg of plutonium in a 25mL titration cup, evaporate the solution to nearly dryness, add 10mL of 1.0mol / LH 2 SO 4 Solution, add AgO (about 5mg each time) in batches until black silver oxide exists in the solution and keep it for 10 minutes; then add 1.5mL saturated sulfamic acid solution, stir for 5 minutes, stop stirring; For ferrous ammonium sulfate solution of 2.82117g / L, reduce Pu(Ⅵ) to Pu(Ⅳ), and make Fe(Ⅱ) excess about 2.0mg; The standard potassium dichromate solution is used as the titrant for titration, and the end point is indicated by the potential; according to the volume of the standard potassium dichromate solution consumed by the titr...
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