|Published by Elsevier|
Garvin, M. C., Schijf, J., Kaufman, S. R., Konow, C., Liang, D., Nigra, A. E., Stracker, N. H., Whelan, R. J., & Wiles, G. C. (2020). A survey of trace metal burdens in increment cores from eastern cottonwood (Populus deltoides) across a childhood cancer cluster, Sandusky County, OH, USA. Chemosphere, 238, UNSP 124528. 10.1016/j.chemosphere.2019.124528
Also accessible in OhioLINK Electronic Journal Center
From the abstract:
"A dendrochemical study of cottonwood trees (Populus deltoides) was conducted across a childhood cancer cluster in eastern Sandusky County (Ohio, USA). The justification for this study was that no satisfactory explanation has yet been put forward, despite extensive local surveys of aerosols, groundwater, and soil. Concentrations of eight trace metals were measured by ICP-MS in microwave-digested 5-year sections of increment cores, collected during 2012 and 2013...
"Whereas our results do not implicate exposure to metals as a causative factor, we conclude that, after 1970, cottonwood trees have accumulated more Cd, Cr, and Ni, inside the childhood cancer cluster than elsewhere in Sandusky County."