Acute toxicity of chromium, mercury, molybdenum and nickel to the amphipod Allorchestes compressa

Abstract

In acute toxicity tests on A. compressa, the 96-h LC₅₀ values for mercury, chromium, nickel and molybdenum were: respectively, 0.08, 5.56,34.68 and 247.12 mg I^-1. The results suggest that mercury has the most toxic effect on A. compressa, followed by chromium, nickel and molybdenum. The applicability of acute toxicity tests in establishing water-quality criteria is discussed.