Premium
The acute toxicity of picloram, picloram potassium salt, and picloram triisopropanolamine salt to aquatic organisms
Author(s) -
Mayes Monte A.,
Dill D. C.
Publication year - 1984
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620030209
Subject(s) - picloram , daphnia magna , acute toxicity , rainbow trout , biology , toxicology , chemistry , toxicity , botany , fishery , fish <actinopterygii> , organic chemistry
The toxicity of technical picloram acid (93.8% active ingredient), picloram potassium salt (43.5% active ingredient) and picloram triisopropanolamine salt (65.2% active ingredient) to aquatic organisms was evaluated in static acute toxicity tests. Species tested were the fathead minnow ( Pimephales promelas Rafinesque), rainbow trout ( Salmo gairdneri Richardson), bluegill ( Lepomis macrochirus Rafinesque), and the daphnid ( Daphnia magna Straus). The rainbow trout was the most sensitive species tested with 96‐h LC50 values of 19.3, 48 and 51 mg/L for picloram acid, picloram potassium salt and picloram triisopropanolamine salt, respectively. These values are 36 × greater than the amount of picloram detected in freshwater streams following the application of picloram to experimental watersheds.