Acute toxicity of two generic drilling fluids and six additives, alone and combined, to mysids (Mysidopsis bahia)

Technical Report · Fri Jan 01 00:00:00 EST 1988

OSTI ID:5102098

Parrish, P R; Macauley, J M; Montgomery, R M

Toxicity tests were conducted with two laboratory-prepared generic drilling fluids (muds) and six commonly used drilling-fluid additives to determine their toxicity, alone and combined, to mysids (Mysidopsis bahia). In 25 tests, the acute toxicity of combinations of one, two, or three of the drilling-fluid additives mixed with either drilling fluid was less than the toxicity predicted from the empirical 96-h LC50s for drilling fluid additive(s) and/or drilling fluid alone; the observed 96-h LC50s of the mixtures were from 1.3 to 23.6 times the values predicted from the presumption of additive toxicity.

• Research Organization: Environmental Protection Agency, Gulf Breeze, FL (USA). Environmental Research Lab.
• OSTI ID: 5102098
• Report Number(s): PB-88-154398/XAB; EPA-600/D-88/004
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
54 ENVIRONMENTAL SCIENCES
DRILLING FLUIDS
TOXICITY
WATER POLLUTION
ADDITIVES
MATHEMATICAL MODELS
MIXTURES
DISPERSIONS
FLUIDS
POLLUTION
560300* - Chemicals Metabolism & Toxicology
520200 - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)