[Acute toxicity of ammonia to Artemia sp].
The acute toxicity of total ammonia-N, (NH3 + NH4+), and un-ionized ammonia-N, NH3-N, on newly hatched Artemia nauplii and Artemia adults was measured in 24, 48, 72, and 96-h semi-static bioassays system. There was a significant difference (P < 0.05) in medial lethal concentrations (LC50) obtained during the tests. The LC50 values on nauplii ranged from 650 mg/l, in 24-h, to 399.1 mg/l total ammonia-N, in 96-h, while the LC50 values on adults ranged from 1290.4 mg/l to 600.5 mg/l total ammonia-N, in the same period. Two methods for calculations of un-ionized ammonia toxicity are analyzed and discussed.
Ostrensky
A
A
Laboratório de Carcinocultura, Centro de Biologia Marinha, Pontal do Sul, PR.
Wasielesky Júnior
W
W
Pestana
D
D
D000641:Ammonia / Q000633:toxicity*; D000818:Animals; D001156:Artemia / Q000187:drug effects*; D006863:Hydrogen-Ion Concentration; D013997:Time Factors
D000641:Ammonia
Toxicidade aguda da amônia para Artemia sp.