Treatment

ChlF ratio F690/F735

1) from aquarium

1.875 ± 0.015

2) from distilled water

1.846 ± 0.012

3) from Fe₂O₃ nanoparticles

2.125 ± 0.016

4) from Fe₃O₄ nanoparticles

2.083 ± 0.018