Toxicity of sodium sulfide to common shiners dynamic bioassay

Journal Article · Tue May 01 04:00:00 EDT 1973 · Tappi; (United States)

OSTI ID:6979756

Chevalier, J R

Common shiners, Notropis cornutus (Mitchill), were exposed to sodium sulfide in concentrations from 0.33 to 3.95 ppm. A dynamic bioassay procedure was used in order to prevent oxygen depletion in test aquaria and to continually expose the test organisms to fresh chemical. Dilution water was purified by a reverse osmosis unit and did not vary chemically. Dilution water and the test solution (mixed at 300 ppm sodium sulfide) were delivered separately by two mechanical proportioning pumps into 12 aquaria. Median tolerance limits (TL50) were calculated for 24, 48, and 96 hr. They were 2.68, 1.72, and 1.64 ppm, respectively. These figures are approximately one-half of the TL50 values for static bioassays. The apparent decrease in TL50 may be partly attributable to the instability of the sodium sulfide in solution, and the true TL50 values may be somewhat lower than even the measured dynamic values. The observed instability of sodium sulfide would also emphasize the need to consider the extent of conversion or removal of such materials by natural processes when setting ambient river standards.

• Research Organization: Inst. of Paper Chemistry, Appleton, WI
• OSTI ID: 6979756
• Journal Information: Tappi; (United States), Journal Name: Tappi; (United States) Vol. 56:5; ISSN TAPPA
• Country of Publication: United States
• Language: English

Related Subjects

560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALI METAL COMPOUNDS
ANIMALS
AQUATIC ORGANISMS
BIOASSAY
CHALCOGENIDES
DATA
DOSES
DYNAMIC FUNCTION STUDIES
EXPERIMENTAL DATA
FISHES
INFORMATION
LETHAL DOSES
NUMERICAL DATA
SODIUM COMPOUNDS
SODIUM SULFIDES
SULFIDES
SULFUR COMPOUNDS
SURVIVAL CURVES
TOXICITY
VERTEBRATES