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Titolo:
EVALUATION OF A LABORATORY-GENERATED NOEC FOR LINEAR ALKYLBENZENE SULFONATE IN OUTDOOR EXPERIMENTAL STREAMS
Autore:
FAIRCHILD JF; DWYER FJ; LAPOINT TW; BURCH SA; INGERSOLL CG;
Indirizzi:
US FISH & WILDLIFE SERV,NATL FISHERIES CONTAMINANT RES CTR,4200 NEW HAVEN RD COLUMBIA MO 65201
Titolo Testata:
Environmental toxicology and chemistry
fascicolo: 10, volume: 12, anno: 1993,
pagine: 1763 - 1775
SICI:
0730-7268(1993)12:10<1763:EOALNF>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
DAPHNIA-MAGNA; SURFACTANTS; TOXICITY; ECOSYSTEMS; SEDIMENT;
Keywords:
LAS; EXPERIMENTAL STREAMS; INVERTEBRATES; HYALELLA-AZTECA; PIMEPHALES-PROMELAS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
36
Recensione:
Indirizzi per estratti:
Citazione:
J.F. Fairchild et al., "EVALUATION OF A LABORATORY-GENERATED NOEC FOR LINEAR ALKYLBENZENE SULFONATE IN OUTDOOR EXPERIMENTAL STREAMS", Environmental toxicology and chemistry, 12(10), 1993, pp. 1763-1775

Abstract

Laboratory and field studies were conducted with linear alkylbenzene sulfonate (LAS) to evaluate the use of laboratory-generated NOECs for protecting aquatic organisms in outdoor experimental streams. Fathead minnows (Pimephales promelas) and freshwater amphipods (Hyalella azteca) were exposed in the laboratory to an environmentally realistic mixture of LAS (average chain length C-11.9) for 7 d; fathead minnows werealso exposed in a 28-d study. Calculated NOEC values based on survival and growth ranged from 0.3 to 0.9 mg/L for fathead minnows and from 0.6 to 1.4 mg/L for amphipods. Toxicity of LAS in 4-, 7-, and 28-d exposures of fathead minnows was similar because mortality occurred within the initial 24 h of exposure; mortality was more sensitive than growth as a chronic end point. The addition of 5% sewage effluent to well and stream water had little effect on the bioavailability of LAS; however, total organic carbon levels were low (<3 mg/L) in all treatments. A 45-d exposure of three outdoor experimental streams to 0.36 mg/L LAS had no effects on survival of fathead minnows or amphipods, dynamicsof benthic invertebrates, growth of periphyton, or processing of detrital leaves. Results indicated that the laboratory-generated NOEC for LAS was protective of experimental stream communities under the studied conditions.

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Documento generato il 25/09/20 alle ore 13:42:48