title: Acute toxicity of ammonia-base neutral sulfite pulp mill waste liquor to rainbow trout.
abstract: The acute toxicity to rainbow trout of untreated ammonia-base neutral sulfite pulp mill waste liquor was demonstrated in these experimants. A mean LC50 of 0.82% and 95% confidence interval of 0.08 - 1.56% was obtained in four static bioassays. Lignin, sulfur dioxide, and ammonia were implicated as toxic components. The latter two were probably the most toxic.
mesh_terms: D000818:Animals; D005618:Fresh Water / Q000032:analysis; D007220:Industrial Waste; D007928:Lethal Dose 50; D010100:Oxygen / Q000032:analysis; D010209:Paper; D012487:Salmonidae / Q000502:physiology*; D013447:Sulfites / Q000633:toxicity*; D014337:Trout / Q000502:physiology*
chemical_list: D007220:Industrial Waste; D013447:Sulfites; D010100:Oxygen