01-16-2014, 03:57 AM
cesium and strontium (binds with calcium in the bones - its the real threat) still leaking at the rate of 300 tons a day into the pacific
we just dont test for the strontium 90...... cesium is more readily measurable and they extrapolate from there to determine strontium contamination that remains unseen and un reported.
as of 2011 "This study measures the concentrations of the main strontium radioisotopes (90Sr and 89Sr) released into the sea over the three months following the accident at the Fukushima Dai-ichi nuclear power plant. The researchers took part in an oceanographic campaign led by Woods Hole Oceanographic Institution, in June, 2011. They analysed samples of water from the surface and from up to 200 metres in depth in an area between 30 and 600 kilometres off the eastern coast of Japan. This work was carried out in collaboration with the University of Seville.
The concentrations found were up to 85 Bq·m-3 (becquerels per cubic metre) for strontium 90 and 265 Bq·m-3 for strontium 89. These findings point to an increase of up to two orders of magnitude -- a hundredfold- in concentrations of strontium-90 in the sea, with respect to the background values for this part of the Pacific before the Fukushima accident, which were 1.2 Bq·m-3. The presence of strontium-89, with a half-life of only 50 days, was further proof of a recent release. The highest concentrations of radioactive strontium were found 130 kilometres from the coast, in the eddies that form at the meeting point between the Kuroshio and Oyashi ocean currents.
The levels of strontium-90 were compared with those of caesium 137, collected in the same survey. This allows researchers to estimate that between March and June 2011 the nuclear accident led to a release into the sea of between 90 and 900 Tbq of Sr-90."
http://www.sciencedaily.com/releases/201...084207.htm
we just dont test for the strontium 90...... cesium is more readily measurable and they extrapolate from there to determine strontium contamination that remains unseen and un reported.
as of 2011 "This study measures the concentrations of the main strontium radioisotopes (90Sr and 89Sr) released into the sea over the three months following the accident at the Fukushima Dai-ichi nuclear power plant. The researchers took part in an oceanographic campaign led by Woods Hole Oceanographic Institution, in June, 2011. They analysed samples of water from the surface and from up to 200 metres in depth in an area between 30 and 600 kilometres off the eastern coast of Japan. This work was carried out in collaboration with the University of Seville.
The concentrations found were up to 85 Bq·m-3 (becquerels per cubic metre) for strontium 90 and 265 Bq·m-3 for strontium 89. These findings point to an increase of up to two orders of magnitude -- a hundredfold- in concentrations of strontium-90 in the sea, with respect to the background values for this part of the Pacific before the Fukushima accident, which were 1.2 Bq·m-3. The presence of strontium-89, with a half-life of only 50 days, was further proof of a recent release. The highest concentrations of radioactive strontium were found 130 kilometres from the coast, in the eddies that form at the meeting point between the Kuroshio and Oyashi ocean currents.
The levels of strontium-90 were compared with those of caesium 137, collected in the same survey. This allows researchers to estimate that between March and June 2011 the nuclear accident led to a release into the sea of between 90 and 900 Tbq of Sr-90."
http://www.sciencedaily.com/releases/201...084207.htm