Agglomerated AgNPs were
observed in sea urchin larva at 51 h after exposure to AgNPs
with a concentration of 0.3 mg/L. XANES shows that
agglomerated AgNPs contain oxidized Ag species complexed
with S and O/N ligands. FTIR results confirm the presence of
additional sulphur compounds suggestive of a biological
response to the toxicity of AgNPs in the sea urchins.
Additionally, it could be concluded from the FTIR results that
there is a loss of calcite in the sea urchins exposed to AgNPs