Acute toxicity bioassay of mercuric chloride: An alien fish from a river

Abstract

This article aims to examine the acute toxicity of mercuric chloride (HgCl₂) to Gambusia holbrooki by static bioassays. It is demonstrated that the LC₅₀ values are decreasing as time increases, so that about 50% of all mortality occurred in the first 24 h. The LC₅₀ values for HgCl₂ at 24, 48, 72, and 96 h of exposure, were 0.56, 0.41, 0.36, and 0.36 mg L⁻¹, respectively.