Iodine 131 measured at purification center in Shizuoka and increasing
Iodine 131 is measured from dired sludge and incineration ash at purification center of Shizuoka prefecture.
About incineration ash, the iodine 131 level is increasing from 11/11/2011.
Incineration ash
Nakashima purification center Bq/kg
| Sample taken | Iodine | Cesium |
| 3/1/2012 | 107 | 317 |
| 2/2/2012 | 80 | 159 |
| 1/5/2012 | 18 | 209 |
| 12/9/2011 | 59 | 260 |
| 11/11/2011 | 19 | 273 |
| 10/14/2011 | ND | 352 |
| 9/15/2011 | ND | 411 |
| 8/18/2011 | ND | 304 |
| 7/21/2011 | ND | 439 |
| 6/20/2011 | ND | 731 |
| 5/27/2011 | ND | 631 |
Dried sludge
Johoku purification center
| Sample taken | Iodine | Cesium |
| 3/1/2012 | 18 | ND |
| 2/2/2012 | 140 | ND |
| 1/5/2012 | 58 | ND |
| 12/9/2011 | 190 | ND |
| 11/11/2011 | 26 | ND |
| 10/14/2011 | 114 | ND |
| 9/15/2011 | ND | ND |
| 8/22/2011 | 85 | ND |
| 7/21/2011 | 50 | ND |
| 6/20/2011 | 148 | 36.7 |
| 5/27/2011 | 12.2 | 16.2 |
Nakajima purification center
| Sample taken | Iodine | Cesium |
| 3/1/2012 | 72 | ND |
| 2/2/2012 | 50 | ND |
| 1/5/2012 | ND | ND |
| 12/9/2011 | 51 | ND |
| 11/11/2011 | 28 | ND |
| 10/14/2011 | 32 | ND |
| 9/15/2011 | ND | ND |
| 8/22/2011 | 70 | ND |
| 7/21/2011 | 33 | 87 |
| 6/20/2011 | 26.3 | ND |
| 6/13/2011 | 29.0 | 22.1 |
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