What question did this study set out to answer?

This study aims to evaluate the ecotoxicity of hydrogen peroxide on the freshwater planarian Girardia tigrina, focusing on locomotion, regeneration, and reproduction.

February 13, 2026Environmental ToxicologyOpen Access

The Employment of Hydrogen Peroxide in Water Disinfection Poses a Threat to Aquatic Ecosystems Because of Its Toxicity to Nontarget Organisms

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Authors

LALetícia Queiroz AlmeidaUniversidade Federal do Tocantins TCThayrine Dias Carlos LBLeydiane Barbosa BezerraUniversidade Federal do Tocantins

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Implication

Experimental assessment of hydrogen peroxide's ecotoxicity in the freshwater planarian, highlighting environmental risks.

Key Points

This study aims to evaluate the ecotoxicity of hydrogen peroxide on the freshwater planarian Girardia tigrina, focusing on locomotion, regeneration, and reproduction.
Conducted acute and chronic assessments of hydrogen peroxide on Girardia tigrina.
Determined the LC50 for 48 hours at 123.55 mg/L.
Evaluated locomotion, regeneration, and reproduction effects at varying concentrations.
Conducted morphological examinations at higher hydrogen peroxide concentrations.
Identified delays in regeneration at 3 mg/L and significant fecundity reduction at 1.52 mg/L.
Observed morphological abnormalities at 12.86 mg/L, suggestive of hydrogen peroxide-induced mutations.
Recommended keeping hydrogen peroxide levels below 1.52 mg/L to protect ecological health.

Cite This Study

Almeida et al. (2026) studied this question.

synapsesocial.com/papers/698ebf4385a1ff6a930168bb https://doi.org/10.1002/tox.70050

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The Employment of Hydrogen Peroxide in Water Disinfection Poses a Threat to Aquatic Ecosystems Because of Its Toxicity to Nontarget Organisms

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Key Points

Cite This Study

The Employment of Hydrogen Peroxide in Water Disinfection Poses a Threat to Aquatic Ecosystems Because of Its Toxicity to Nontarget Organisms

Discussion

Member takes

Implication

Key Points

Cite This Study

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