Assessing the chronic toxicity of nickel to a tropical marine gastropod and two crustaceans.

摘要: Abstract The mining and processing of nickel ores from tropical regions contributes 40% the global supply. potential impact these activities on marine ecosystems is poorly understood. Due to lack ecotoxicity data for species, there currently no available water quality guideline value that specific species. In this study, we investigated toxicity three invertebrates, gastropod Nassarius dorsatus, barnacle Amphibalanus amphitrite, copepod Acartia sinjiensis. All tests used chronic endpoints, namely larval growth, metamorphosis (transition nauplii cyprid larvae) development snail, respectively. Toxicity were carried out under environmentally relevant conditions (i.e. 27–30ᵒC, salinity 34–36‰, pH 8.1–8.4). Copper was also tested assurance purposes allow comparisons with previous studies. most sensitive species nickel, inhibited by 10% (EC10) at 5.5 (5.0–6.0) µg Ni/L (95% confidence limits (CL)). Based EC10 values, showed similar sensitivities growth 64 (37−91) 67 (53−80) Ni/L, existing in literature, A. sinjiensis so far nickel. This study has provided high which will contribute a waters. A sensitivity distribution generated paper supplemented literature data, comprising 12 representing 6 taxonomic groups. 5% hazard concentration (HC5) determined as 8.2 µg/L Ni.