Application of the biotic ligand model to predict copper acute toxicity to Medaka fish in typical Chinese rivers

摘要

LA_(50), the Lethal Accumulation of Cu on the Medaka fish (Oryzias latipes) gills that results in 50% mortality during a toxicological exposure (96 hours) in synthetic water was assessed by use of the biotic ligand model (BLM). The LA_(50) was employed to predict the 96 h Cu toxicity (LC _(50)) to this fish in different natural surface waters in China. The LC_(50) values were predicted with errors of no more than 1.55 for the river water except for two water samples, one of which was from a tidal river and the other of which was from a river that was subject to joint metal pollution and possibly affected by other pollutants.