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SL368: Aquatic Toxicology Notes: Diquat

Figure 2. Species sensitivity distribution for aquatic plants exposed to expected environmental concentrations of diquat (not treatment concentrations). The straight line represents the model fit to all of the data (y = 11.285ln(x) + 83.41; R2 = 0.9373). Maximum aqueous concentrations from the literature are higher than the most sensitive species, indicating a lack of a margin of safety for approximately 18% of species.