Method for determining content of impurity elements in uranium nitride solid sample
A technology of impurity elements and determination methods, applied in the field of chemical detection
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Embodiment 1
[0055] 1 sample dissolved
[0056] Weigh 1.0g of sample, place the sample in a 150mL quartz beaker, add 5mL of concentrated nitric acid solution, heat and dissolve on a temperature-adjusted electric heating plate at 230°C to 260°C, after the sample is completely dissolved, evaporate it to a small amount at low temperature, and take Next, cool to room temperature.
[0057] 2 Separation of uranium matrix
[0058] Use 5.5mol / L nitric acid solution as the medium, wash the beaker three times, and transfer the sample to the quartz separatory funnel that has been added with 20mL uranium extraction reagent. Shake the separatory funnel for 30 seconds and let it stand for 10 minutes. Place the lower clear liquid in a well-balanced reversed-phase chromatography separation column. Use a 10mL quartz volumetric flask to receive the eluent to the mark, dilute to volume, and shake well for testing.
[0059] 3 Preparation of standard solution
[0060] Preliminary determination of each eleme...
Embodiment 2
[0084] 1 sample dissolved
[0085] Weigh 1.0g of sample, place the sample in a 150mL quartz beaker, add 7.5mL of concentrated nitric acid solution, heat and dissolve on a temperature-adjusting electric heating plate at 230°C to 260°C, and after the sample is completely dissolved, evaporate it to a small amount at low temperature. Remove and cool to room temperature.
[0086] 2 Separation of uranium matrix
[0087] Using 8mol / L nitric acid solution as the medium, wash the beaker three times, and transfer the sample to a quartz separatory funnel that has been added with 30mL uranium extraction reagent. Shake the separatory funnel for 30 seconds and let it stand for 10 minutes. Place the lower clear liquid in a well-balanced reversed-phase chromatography separation column. Use a 10mL quartz volumetric flask to receive the eluent to the mark, dilute to volume, and shake well for testing.
[0088] 3 Preparation of standard solution
[0089] Preliminary determination of each elem...
Embodiment 3
[0112] 1 sample dissolved
[0113] Weigh 1.0g of sample, place the sample in a 150mL quartz beaker, add 10mL of concentrated nitric acid solution, heat and dissolve on a temperature-adjusting electric heating plate at 230°C to 260°C, and after the sample is completely dissolved, evaporate it to a small amount at low temperature, and take Next, cool to room temperature.
[0114] 2 Separation of uranium matrix
[0115] Use 10mol / L nitric acid solution as the medium, wash the beaker three times, and transfer the sample to the quartz separatory funnel that has been added with 40mL uranium extraction reagent. Shake the separatory funnel for 30 seconds and let it stand for 10 minutes. Place the lower clear liquid in a well-balanced reversed-phase chromatography separation column. Use a 10mL quartz volumetric flask to receive the eluent to the mark, dilute to volume, and shake well for testing.
[0116] 3 Preparation of standard solution
[0117] Preliminary determination of each ...
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