Use of an Exposure Chamber to Maintain Aqueous Phase Nanoparticle Dispersions for Improved Toxicity Testing in Fish

Researchers:

David Boyle, Halis Boran, Andrew J. Atfield, Theodore B. Henry

Abstract:

A novel chamber for maintaining aqueous phase dispersions of nanoparticles (NPs) to enable improved toxicity testing in larval zebrafish was developed. Aqueous concentrations were within 80% of initial NP concentrations, and the 96-h median lethal concentration (LC50) values were highly reproducible (coefficient of variation <0.16, n = 3 tests). Significantly lower toxicity for each NP tested (Ag, Cu, and TiO2 NPs) in static beakers suggested that traditional acute toxicity tests may underestimate aqueous phase toxicity of NPs.

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Citation:

Boyle D, Boran H, Atfield AJ, Henry TB. 2015. Use of an exposure chamber to maintain aqueous phase nanoparticle dispersions for improved toxicity testing in fish. Environmental Toxicology and Chemistry 34:583-588.