摘要
苏州市距秦山直线约８５ｋｍ，１９９０～１９９２年，我们针对秦山核电站监测结果：（１）环境空气ｒ连续监测，正常情况下剂量率０．０９～０．１３μＧｙ／ｈ，１９９２年平均剂量率为１０．１×１０－８Ｇｙｈ－１；（２）１９９１年本市调查和估算结果室内、外ｒ辐射剂量率分别为１０１和６４ｎＧｙ·ｈ－１；室内、外宇宙射线电离成分（不包括中子）所致空气吸收剂量率分别为２６．０和２８．８ｎＧｙ·ｈ－１；宇宙射线、天然辐射和天然贯穿辐射所致居民人均年有效剂量当量分别为０．２４ｍＳｖ、０．５６ｍＳｖ和０．８ｍＳｖ；所致集体年有效剂量当量分别为０．１８．０．４２和０．６×１０３人·Ｓｖ；（３）大气气溶胶总ａ平均为４．５×１０－４Ｂｑ·Ｍ－３；总Ｂ为２．８１×１０－３Ｂｑ·Ｍ－３，α／β比值约０．１６；（４）１９９２年大气沉降约总β全年月平均为２．４８×１０７Ｂｑ·ｋｍ－２月－１；（５）环境水体除雪水（１９９０年）１３４，１３７Ｃｓ高出其他水体５０倍外，无异常发现；（６）土壤、食品中天然和人工放射性核素分析除个别偏高外，均属本底水平。
uzhou is located on the leeward of Qinshan Nuclear Power Station, 85 kilometres away from Qinshan,here we report the methods and results of the environmental monitoring from 1990 to 1991in Suzhou. The results are as follows: (1 )In 1992, the average value of natural tadiation dose rate inall is 10. 1 × 10-8Gyh-1. (2)In 1991, the --ray dose rate inside buildings is 101 nGy. h-1 and outsidebuildings 64 nGy. h-1. The average values of the dose rate inside buildrigs and outside bulidings fromcosmic rays are 26. 0 and 28. 8nGy. h-1 .respectively; The annual effective dose equivalents fromcosmic ray, natural radiation and natural penetrating radiation are 0. 24, 0. 56 and 0. 8mSv,respectively;and correspondingly, The anunal collective effective dose equivalents are 0. 1 8, 0. 42 and0. 6×103 manSv, respectively; (3) In atmosphere, aerosol, the total radiation dose rate of a-- ray and 6--ray are 4.5× 10-4 and 2. 81 × 10--3 Bq· M-3,and the α/β radio is about 0. 16; (4)In 1992,themonthly average value of the total β radiation dose rate in atmosphere depositon is 2. 48 × 107Bq.km-2 ; (5)Except for snow water,in which the radiation level of 134'137Cs(1990,Suzhou ) is 50 timeshigher than that of other places, We found no abnormallity in the environmental water; (6 )Thenatural and artificial radionuclide in the Soil and food are all in the range of background level exceptthe few which are higher.
出处
《苏州医学院学报》
1995年第1期19-23,共5页
Acta Academiae Medicinae Suzhou
关键词
秦山核电站
辐射
剂量
放射性核素
苏州市
Qinshan nuclear power station
dose rate
radiation
radionuclide (P. 19)
