Main Title |
Effects of Hardness, Alkalinity and pH on the Toxicity of Pentachlorophenol to 'Selenastrum Capricornutum' (Printz). |
Author |
Smith, P. D. ;
Brockway, D. L. ;
Stanch, F. E. ;
|
CORP Author |
Environmental Research Lab., Athens, GA. |
Year Published |
1987 |
Report Number |
EPA/600/J-87/272; |
Stock Number |
PB88-180369 |
Additional Subjects |
Toxicology ;
Culture media ;
Alkalinity ;
pH ;
Reprints ;
Selenastrum capricornutum ;
PCP ;
Pentachlorophenol
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB88-180369 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
12p |
Abstract |
The toxicity of pentachlorophenol (PCP) to Selenastrum capricornutum was examined in three different culture media: a hard and a soft form of Freeman's reference water and the algal assay bottle test (AABT) medium (a soft water). The 96-h growth potentials of the media were equal (28-29 mg/L dry wt.) but 96-h EC50s ranged sevenfold: 0.11 mg/L (AABT), 0.15 mg/L (Freeman's soft water) and 0.76 mg/L (Freeman's hard water). Culture media equilibrium pH and 96-h EC50s were strongly correlated (r=1.00). Evidence is presented that supports the hypothesis that the toxicity of PCP, a weak acid, is due primarily to the concentration of the undissociated species. |