Table 3: Magnetite content determined by ICP for formulations indicated (mean ± SD).

Sample
(% w/w)

(% w/w)
EE%
(Fe)
EE%
(magnetite)

Magnetite70.9169.784 ± 0.33
F84.483.09 ± 0.2368.94 ± 0.3074.01 ± 0.27
F94.480.605 ± 0.1513.50 ± 0.5314.49 ± 0.48
F114.482.382 ± 0.4653.14 ± 0.4557.05 ± 0.43
E26.841.22 ± 0.3917.84 ± 0.4919.15 ± 0.29
E37.531.80 ± 0.2726.32 ± 0.3828.26 ± 0.17
E56.731.22 ± 0.3818.14 ± 0.6019.47 ± 0.58