| Autor: |
Hall, W. Scott, Dickson, Kenneth L., Saleh, Farida Y., Rodgers, John H. |
| Zdroj: |
Archives of Environmental Contamination and Toxicology; September 1986, Vol. 15 Issue: 5 p529-534, 6p |
| Abstrakt: |
Research was conducted to assess the importance of suspended solids (ss) types and levels and associated organic carbon contents on the bioavailability of chlordane toDaphnia magna. The dose response relationship ofD. magna to chlordane was established in the absence of suspended solids. Test waters with suspended solids levels of approximately 0, 100, 500, and 750 mg/L contained a chlordane concentration which caused ~80% mortality of the test population in 48-hr. The effects of different types and levels of suspended solids onD. magna mortality were observed. Both montmorillonite clay (0 organic carbon) and pond sediments (1.7% organic carbon) reduced bioavailability of chlordane toD. magna. Suspended solids characteristics were not a determining factor In the reduction of the bioavailability of chlordane toD. magna as long as a threshold level (>200 to 300 mg/L) of suspended solids was present. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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