The estimation of radiation dosage showed that the maximum effective dose equivalent received by local residents from water in Yangtze River area was only about 2 % of natural radiation level in that area. 辐射剂量估算表明,长江水系后民经本途径产生的最大个人有效剂量当量仅占该地区天然辐射水平的2%左右。
The maximum annual effective dose equivalent to resident ( adult ) caused by ingesting the food and inhaling the air is 9. 27 X 10-7Sv / a and the collective effective dose equivalent is 0. 36 man-Sv / a. 公众居民(成人)因吸入和食入含~(131)I和~(134137)Cs的空气和食品所致的最大年有效剂量当量为9.27×10~(-7)Sv,集体有效剂量当量为0.36man-Sv/a。