July 14, 2008, phys.org: Dioxin risk in soil and plant tissues after long-term biosolids application Citat: "...Dioxins were not detected in the corn grains. Only trace levels were found in the corn stover, and there was no statistical difference between the control and the biosolids-amended plots. These observations suggest that dioxins from land application of biosolids do not pose any risk to human health or the environment, if biosolids are land applied according to the USEPA regulations...", backup
July 14, 2008, phys.org: Dioxin risk in soil and plant tissues after long-term biosolids application Citat: "...Dioxins were not detected in the corn grains. Only trace levels were found in the corn stover, and there was no statistical difference between the control and the biosolids-amended plots. These observations suggest that dioxins from land application of biosolids do not pose any risk to human health or the environment, if biosolids are land applied according to the USEPA regulations...", backup