 | The following summarizes the monitoring results on radioactivity in fallout, foodstuffs, and cumulative samples during first half, 2008. Numbers of samples are 533. |
| Direct radiation¡GThe exposure rates were found between 0.036 and 0.078 £gSv/hr, which were within the variation of environmental background radiation. |
| Airborne particulates¡GGross beta activities were found between 0.19 and 1.84 mBq/m3, which were far below the warning level of 9¡Ñ103 mBq/m3. There is only naturally occurring radionuclide Be-7 was found with gamma spectrometry. |
| Water tray samples¡GGross beta activities were found between 0.03 and 1.76 Bq/m2 • month, which were far below the warning level of 9¡Ñ104 Bq/m2 • month. Sr-90 activities of all samples were below MDA. No man-made radionuclides were found with gamma spectrometry. |
| Rainwater and fallout (collected via water trays)¡GGross beta activities were found between MDA and 636 mBq/L. Tritium activities of all sample were below MDA. No man-made radionuclides wrer found with gamma spectrometry. |
| Grass¡GOnly naturally occurring radionuclides Be-7 and K-40 were found with gamma spectrometry. |
| Water sample¡GGross beta activities were found between MDA and 224 mBq/L. Tritium activities of all sample were below MDA. |
| Tealeaves sample¡GNaturally occurring radionuclides of Be-7 and K-40 were found with gamma spectrometry in Ping-Lin¡¦s and Nan-Tou¡¦s samples. The activities of Sr-90 were found between MDA and 0.14 Bq/kg • fresh respectively. |
| Soil and sand¡GNaturally occurring radionuclides Be-7, K-40, Th series and U series were found with gamma spectrometry. The activities of Sr-90 were found between MDA and 0.48 Bq/kg • dry. |
| Foodstuffs¡GIn the diet, gross beta activities were found between 21 and 110 Bq/kg• fresh. No man-made radionuclides were found with gamma spectrometry. In fish and seaweed, etc. No man-made radionuclides were found with gamma spectrometry. |
| Tap-water¡GGross alpha activities were below MDA of all samples, while gross beta activities were between MDA and 113 mBq/L, which meet the safety requirement for drinking water. |
| The imported foodstuffs¡GThe imported foodstuffs include seafood can, fresh vegetable, fresh fruit, dry fruit and dry seed, etc. Only naturally occurring radionuclide K-40 were found with gamma spectrometry. |
| Tile¡GData of radioactivity in selected tiles are lower than refernce level for building material. |
| Based on this biannual survey, we conclude that the artificial radioactivities in Taiwan are |
| within the variation of background environmental radiation. It is accessed that between January and June 2008, |
| the committed effective dose due to inhalation, food and tea leave consumption is far below |
| the required by law. |
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