| Main Title |
Effects of sediment holding time on sediment toxicity / |
| Author |
Becker, G. Scott. ;
Becker, D. S. ;
Ginn, T. C.
|
| Other Authors |
|
| CORP Author |
PTI Environmental Services, Bellevue, WA.;Environmental Protection Agency, Seattle, WA. Region X. |
| Year Published |
1990 |
| Report Number |
EPA 910/9-90-009; EPA-68-D8-0085 |
| Stock Number |
PB91-149575 |
| OCLC Number |
38147469 |
| Additional Subjects |
Sediments ;
Water pollution effects(Animals) ;
Puget Sound ;
Marine biology ;
Time dependence ;
Comparison ;
Tables(Data) ;
Graphs(Charts) ;
Toxicity tests ;
Amphipod mortality test ;
Neanthes biomass test ;
Microtox test
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| ESAD |
EPA 910-9-90-009 |
2 copies |
Region 10 Library/Seattle,WA |
06/09/2016 |
| NTIS |
PB91-149575 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
v, 34, A-9 leaves : ill., map ; 28 cm. |
| Abstract |
Four of the sediment bioassays commonly used to assess the toxicity of Puget Sound sediments were used to evaluate the influence of sample holding time on the toxicity of sediment samples collected from a highly contaminated site and a reference area in the sound. The four sediment bioassays evaluated included the following: 10-day amphipod mortality test, 20-day Neanthes biomass test, 15 minute Microtox test (saline extract), 48-hour echinoderm embryo abnormality test. The results of the amphipod mortality test suggests that sediment holding times longer than 6 weeks may result in bioassay responses that are substantially different from those observed after a 2-week holding time. The results from the Neanthes biomass test indicate that holding times of 6 weeks or longer may result in bioassay responses that are different from those observed after a 1 week holding time. The results of the Microtox test suggests that sediment holding times of 4 weeks or longer may result in bioassay responses that are substantially different from those observed after a 2-week holding time. The results of the echinoderm embryo abnormality test were not evaluated. |
| Notes |
"June 1990." "EPA Contract 68-D8-0085." "PTI Contract C744-11." "Puget Sound Estuary Program"--Cover. "EPA 910/9-90-009"--Cover. "Four of the sediment bioassays commonly used to assess the toxicity of Puget Sound sediments were used to evaluate the influence of sample holding time on the toxicity of sediment samples collected from a highly contaminated site and a reference area in the sound."--Exec. summary. Includes bibliographical references (leaves 33-34). |
