Table 1: Soluble fraction of nickel (mg L−1) released from NiO-NPs in BG-11 culture medium at pH 7.

[NiO-NPs][Ni2+]
mg L−1mg L−1

0.1n/a
1n/a
100.80 ± 0.05
1006.42 ± 0.6

n/a: not detected.