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. 2019 Mar 31;9(4):494. doi: 10.3390/nano9040494

Table 1.

Element ratio variations by using the EDX method of magnetic nanoparticles and after modification with APTMS.

Sample Atomic Content, % [NH2], µM/g
N Fe Si O
Fe3O4 NPs - 43.1 - 56.9 -
Fe3O4-Aminated NPs 1.0 36.0 2.3 60.7 86.57