Figure 1.

Overview of selected test chemicals, giving reference to their physico-chemical properties (logHLC, logKow), their acute fish toxicity category and their mode of action. The numbers in brackets behind each chemical name indicate the acute fish toxicity category of the chemical (ENV/JM/MONO(2001)8; I = LC₅₀ ≤ 1 mg/L; II = LC₅₀ > 1−≤ 10 mg/L; III = LC₅₀ > 10−≤100 mg/L; >III = LC₅₀ > 100 mg/L; SI Section 4.b). Mode of action according to Russom et al. (1997): NPN, nonpolar narcotic; PN, polar narcotic; AChE, acetyl cholin esterase inhibitor.