Which of the following is NOT toxic to amphibians?

• A. Phenolics
• B. Chloramines
• C. Latex gloves
• D. Activated carbon

Answer: (D)

Amphibians are extremely sensitive to chemicals in their environment because their skin is permeable and they often share water with contaminants. Activated carbon is not toxic to amphibians because it is an inert filtration medium that adsorbs contaminants without releasing harmful substances into the water. In contrast, phenolics are disinfectants that can disrupt cell membranes and denature proteins, making them toxic to amphibians. Chloramines, used for water disinfection, can damage gills and skin at concentrations typical in aquatic habitats, posing harm to amphibians. Latex gloves themselves aren’t inherently toxic, but residues or additives in gloves can irritate or provoke reactions in some animals; however, they don’t provide the same risk-free profile as activated carbon.