Land Treatment of PAH-Contaminated Soil: Performance Measured by Chemical and Toxicity Assays
| Autor: | Carolyn M. Acheson, Qin Zhou, Lina Chang, Margaret J. Kupferle, Yonggui Shan, Richard C. Brenner, John R. Meier, Gregory D. Sayles |
|---|---|
| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Environmental Science & Technology. 33:4310-4317 |
| ISSN: | 1520-5851 0013-936X |
| DOI: | 10.1021/es9810181 |
| Popis: | The performance of a soil remediation process can be determined by measuring the reduction in target soil contaminant concentrations and by assessing the treatment's ability to lower soil toxicity. Land treatment of polycyclic aromatic hydrocarbon (PAH)-contaminated soil from a former wood-treating site was simulated at pilot scale in temperature-controlled soil pans. Nineteen two- through six-ring PAHs were monitored with time (initial total PAHs = 2800 mg/kg). Twenty-five weeks of treatment yielded a final total PAH level of 1160 mg/kg. Statistically significant decreases in concentrations were seen in total, two-, three-, and four-ring PAHs. Carcinogenic and five- and six-ring PAHs showed no significant change in concentration. Land treatment resulted in significant toxicity reduction based on root elongation, Allium chromosomal aberration, and solid-phase Microtox bioassays. Acute toxicity, as measured by the earthworm survival assay, was significantly reduced and completely removed. The Ames spiral p... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|