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Table 5

Comparison between the composition of produced NOx during UO2 pellets dissolution and by bubbling of pure NO and NO2 through nitric acid solutions [9].

HNO3 (mol l−1) Mass of the UO2 pellet or NOx content of bubbled gas Quantity and composition of collected NOx

Total quantity (mol) NO NO2
3.4 UO2 1.0195 g 2.673 × 10−3 86% 14%
NO 25% 2.476 × 10−3 86% 14%
NO2 46% 5.805 × 10−3 87% 13%
4.5 UO2 1.0050 g 2.599 × 10−3 84% 16%
NO 25% 2.917 × 10−3 85% 15%
NO2 47% 7.153 × 10−3 84% 16%
6.7 UO2 0.9904 g 2.718 × 10−3 75% 25%
NO 25% 2.917 × 10−3 73% 27%
NO2 48% 7.367 × 10−3 54% 46%
NO2 5% 2.420 × 10−3 70% 30%

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