Deciphering the Natural Attenuation of Cyanotoxins: Dissipation, Transformation Pathways, and Genotoxicity.

ABSTRACT: Microcystin-LR (MC-LR) and cylindrospermopsin (CYN) are toxic cyanotoxins frequently found in drinking water sources, posing significant health risks. This study conducted a microcosm experiment using surface lake water exposed to sunlight to investigate the natural attenuation processes of MC-LR and CYN. Results indicated that photodegradation plays a crucial role in the natural attenuation of cyanotoxins. The half-lives of MC-LR and CYN were 1 and 7 days in summer under a combined effect of direct and indirect photodegradation, respectively. The effectiveness of these natural processes varied seasonally, with faster dissipation rates observed during summer. Bacterial degradation notably affected only MC-LR in summer, with a negligible effect on CYN. The identified transformation products

SUBMITTER: Feng J 

PROVIDER: S-EPMC11851214 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature