Journal or Publishing Institution: Bulletin of Environmental Contamination and Toxicology
Date of Publication: 06/01/2007
Study: http://link.springer.com/article/10.1007%2Fs00128-007-9091-0
Author(s): Brausch, J.M., Beall, B., and Smith, P.N.
Article Type: Peer Reviewed Study
Abstract: Polyethoxylated tallowamine (POEA) is a non-ionic surfactant used in many herbicide formulations to increase the ability of active ingredients to penetrate leaf cuticles. However, it has also been shown to disrupt respiratory membranes in aquatic organisms. In this study, Daphnia magna was used to examine the lethal and sub-lethal toxicity of three POEA formulations consisting of 5:1, 10:1, and 15:1 average oxide:tallowamine. The formulation consisting of 10:1 was the most acutely toxic with a 48-h LC50 value of 97.0 μg/L and 15:1 was least toxic at 849.4 μg/L. All formulations inhibited growth at concentrations between 100 and 500 μg/L.
Keywords: Daphnia magna, water flea, Polyethoxylated tallowamine (POEA), surfactants, acute toxicity
Citation:
Brausch, J.M., Beall, B., and Smith, P.N., 2007. Acute and sub-lethal toxicity of three POEA surfactant formulations to Daphnia magna. Bulletin of Environmental Contamination and Toxicology, 78(6), 510-514.
Category:
- Environmental effects
- Pesticide use
Record ID: 250
