(KMOV.com) -- Inspectors with the Illinois Emergency Management Agency detected small amounts of radiation and they say is most likely from Japan.
The inspectors took air samples and grass clippings in Madison County and other areas on Wednesday. Minute amounts of iodine were detected, but the inspectors said there is no immediate danger to local residents.
Radiation expert, Sue Langhorst, Ph.D. from Washington University said, "The fact that we can measure this very low amount, is not of any harm to anyone." She said everything is safe including milk.
Doctor Langhorst went on to demostrate, using a Geiger counter, how every day products like salt substitute emit radiation. She said, however, the increased radiation found in Illinois is almost certainly from Japan.