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Acute and chronic toxicity of hydrogen sulfide to the fathead minnow, Pimephales promelas

Journal Article · · Environ. Sci. Technol.; (United States)
DOI:https://doi.org/10.1021/es60117a001· OSTI ID:6410151

Toxic effects of molecular hydrogen sulfide to eggs, fry, and juveniles of the fathead minnow, Pimephales promelas Rafinesque, were determined in flow-through bioassays. The 96-h LC50 of laboratory-cultured juveniles at 20/sup 0/C was 0.0243 mg/l. H/sub 2/S. Fry were approximately twice as sensitive. Response with temperature in wild stock juveniles varied from a 96-h LC50 of 0.7754 mg/l. at 6.5/sup 0/C to 0.0423 mg/l. H/sub 2/S at 25/sup 0/C. In chronic exposure to H/sub 2/S from egg through two generations of laboratory-cultured stock in flow-through bioassays, adverse effects on growth, survival, and fecundity occurred above 0.004 mg/l. H/sub 2/S. Chronic exposure of wild stock up to 346 days caused adverse effects on growth and survival above 0.008 mg/l. H/sub 2/S. At comparable temperatures apparent safe levels with long exposure were five- to sevenfold lower than the 96-h LC50 for both stocks. 5 tables.

Research Organization:
Univ. of Minnesota, St. Paul
OSTI ID:
6410151
Journal Information:
Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 10:6; ISSN ESTHA
Country of Publication:
United States
Language:
English