Research estimated toxicity of refuse-derived fuel fly ash (RDF-FA) on two earthworms species, Lumbricus terrestris and Eisenia foetida. Specific objectives were to: (1) Compare their 14-day LC50s under light and dark conditions; (2) separate toxicity due to osmotic, pH and physical factors from that of heavy metal contaminants; (3) compare relative differences of artificial soil and commercial soil as exposure media for evaluating toxicity to earthworms. The 14-d LC50s for L. terrestris in dark and light were 57.0 and 48.34 % RDF-FA, and 59.25 and 41.00 % RDF-FA for E. foetida using artificial soil. All of the toxicity resulted from heavy metals within the RDF-FA. Using L. terrestris, the LC50s for artificial soil and commercial soil were 52.30 and 64.34%.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc504583 |
| Date | 05 1900 |
| Creators | Jahani, Aghamolla |
| Contributors | Fitzpatrick, Lloyd C., Goven, Arthur James, 1950-, Venables, Barney J., Kester, Andrew S. |
| Publisher | University of North Texas |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | vii, 77 leaves: ill., Text |
| Rights | Public, Jahani, Aghamolla, Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved. |
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