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. 2021 Mar 3;9(3):216. doi: 10.3390/vaccines9030216

Table 1.

Half-lives (t ½ in min) resulting from the nanoparticles degradation process.

pH 5.5 1 pH 8.5 1 pH 6.9 (tap) 2
NP-HE 202 106 122

1 Water hardness 30 °fH. 2 Tap water from Pamplona, Spain. Water hardness 20 °fH.