Effects of iron(III) chloride on the toxicity of cylindrospermopsin and its degradation products.

Cylindrospermopsin (CYN) is a widespread cyanobacterial toxin frequently detected in aquatic environments. We investigated whether iron(III) chloride, widely used in drinking water treatment and cyanotoxin removal technologies, affects the toxicity of CYN or its degradation products. Toxicity, assessed using the Thamnotoxkit F™ bioassay, remained unchanged following incubation with iron(III) chloride. These findings support the use of iron-based treatment strategies while highlighting the need to evaluate their effects under environmentally relevant conditions.