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首页> 外文期刊>Journal of Environmental Radioactivity >The investigation of ~(137)Cs and ~(90)Sr background radiation levels in soil and plant around Tianwan NPP, China
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The investigation of ~(137)Cs and ~(90)Sr background radiation levels in soil and plant around Tianwan NPP, China

机译：田湾核电厂周围土壤和植物中〜（137）Cs和〜（90）Sr背景辐射水平的调查

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摘要

~(137)Cs and ~(90)Sr background levels in soil and plant around Tianwan Nuclear Power Plant (NPP) are reported. Eighty-four soil samples and 44 plant samples were collected from March 2000 to April 2002. The samples were analyzed by gamma spectrometry and radiochemical separation procedure to quantify ~(137)Cs and ~(90)Sr radioactivities. The concentrations (Bq kg~(-1) dry weight) have been observed in the range of 0.6— 1.6 for ~(90)Sr and 1.4—6.9 for ~(137)Cs in soils, their average values are 1.0 ± 0.3 and 4.6 ± 1.6, respectively, which are relatively lower than the reported values in neighboring countries. The mean concentrations (in Bq kg~(-1) fresh weight except for tea and grass which is expressed in Bq kg~(-1) dry weight) of ~(137)Cs and ~(90)Sr are 0.1 ± 0.03 and 7.7 ± 4.1 in pine needle, 0.27 ± 0.05 and 3.0 ± 1.1 in tea, 0.65 ± 0.19 and 2.1 ± 0.3 in grass, 0.033 ±0.021 and 0.084 ±0.045 in wheat, 0.019 ±0.01 and 0.23 ±0.06 in China cabbage, and 0.009 ± 0.007 and 0.024 ± 0.084 in rice, respectively. The pine needle and tea can be regarded as indicator species for ~(90)Sr and ~(137)Cs. The soil-to-plant transfer factor (TF) values of ~(90)Sr and ~(137)Cs are, respectively, 0.022 and 0.031 for rice, 0.066 and 3.83 for China cabbage, 0.0088 and 0.089 for wheat, and 0.037 and 0.56 for grass.
机译：据报道田湾核电站（NPP）周围土壤和植物中的〜（137）Cs和〜（90）Sr背景水平。从2000年3月至2002年4月，收集了84个土壤样品和44个植物样品。样品通过伽马能谱法和放射化学分离程序进行分析，以量化〜（137）Cs和〜（90）Sr放射性。在土壤中，〜（90）Sr的浓度（Bq kg〜（-1）干重）在0.6- 1.6范围内，〜（137）Cs的浓度在1.4-6.9范围内，平均值为1.0±0.3和分别为4.6±1.6，分别低于邻国的报告值。 〜（137）Cs和〜（90）Sr的平均浓度（除茶叶和草以外，以Bq kg〜（-1）的鲜重表示，以茶干Bq kg〜（-1）的干重表示）为0.1±0.03和松针7.7±4.1，茶0.27±0.05和3.0±1.1，草0.65±0.19和2.1±0.3，小麦0.033±0.021和0.084±0.045，白菜0.019±0.01和0.23±0.06、0.009大米分别为±0.007和0.024±0.084。松针和茶可以视为〜（90）Sr和〜（137）Cs的指示剂。 〜（90）Sr和〜（137）Cs的土壤-植物转移因子（TF）值分别为水稻为0.022和0.031，大白菜为0.066和3.83，小麦为0.0088和0.089、0.037和0.037草为0.56。

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