Publications by authors named "Jerry Yokel"
The purpose of this study was to assess ecotoxicity of former orchard soils contaminated with lead arsenate pesticides at the Hanford Site in Washington state (USA). Surface soil, plant, and invertebrate samples were collected from 11 sites in former orchard areas. Mean (standard deviation [SD]) for As and Pb in soil were 39.
View Article and Find Full Text PDFChemical and ecotoxicological characterization of Columbia River sediments below the Hanford site (USA).
Ecotoxicol Environ Saf
January 2007
Article Synopsis
- Columbia River sediments from four dams near the Hanford site were analyzed for metals, organics, and toxicity, revealing generally higher metal levels at Priest Rapids dam compared to downriver sites.
- Semivolatile compounds and organochlorine pesticides were found to be below reporting limits, and differences in radionuclide levels were minimal across locations.
- Toxicity tests indicated risks to benthic organisms, particularly due to metals likely originating from upstream mining and environmental factors such as low oxygen and high ammonia levels.
Article Synopsis
- The study aimed to analyze arsenic (As) and lead (Pb) levels in former orchard soils at the Hanford site, known for being contaminated with lead arsenate pesticides.
- Surface samples collected from multiple locations showed mean As levels of 30 mg/kg and Pb levels of 220 mg/kg, both exceeding typical background levels but consistent with orchard soils.
- There was a strong positive correlation between As and Pb concentrations, and while both metals decreased with depth, only Pb levels showed a statistically significant decline, indicating potential risks to human and ecological health.