Reply #15: Strontium also found in Yokohama gutter

[kristopher]

Radioactive strontium found in Yokohama gutter
BY YOSHIKAZU SATO STAFF WRITER
2011/10/16

YOKOHAMA -- Radioactive strontium has been found in a street gutter in Yokohama, appearing to confirm that the radioactive isotope has spread far beyond districts close to the Fukushima No. 1 nuclear power plant.

Sediment in the gutter in the Okurayama district of Kohoku Ward contained 129 becquerels of radioactive strontium-89 and strontium-90 combined per kilogram, city officials announced on Oct. 14. The results follow an earlier report that deposits of strontium had been found on a nearby apartment building's rooftop.

...Radioactive cesium of 39,012 becquerels per/kg was also detected in the sample from the gutter but it is the presence of strontium that makes the Yokohama reports exceptional. There had previously been no reports of strontium contamination beyond 100 kilometers of the Fukushima plant.

Although Kohoku Ward is about 250 kilometers from the Fukushima plant, the concentration found in the gutter is higher than the 77 becquerels per kilogram detected in soil in Fukushima city between April and May...

http://www.asahi.com/english/TKY201110150314.html