Based on the newly-developed techniques, the transfer behaviors of ⁹⁰Sr and ¹³⁷Cs under natural conditions were studied. The concentrations of ⁹⁰Sr and ¹³⁷Cs in soil, grass, vegetable and cow milk samples were determined. The obtained soil to grass transfer factor of ⁹⁰Sr was 54 times as that of ¹³⁷Cs. The grass to milk transfer coefficients showed that ¹³⁷Cs is much easier into milk than ⁹⁰Sr. The total effective dose for a public due to ⁹⁰Sr and ¹³⁷Cs intake through vegetable and milk was estimated to be 2.29 μSv a⁻¹, being well below the exemption level recommended by the ICRP.

中文翻译：

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意大利中部自然条件下90Sr和137Cs从土壤到草地到牛奶的转移行为及其暴露风险

基于新开发的技术，研究了⁹⁰ Sr和¹³⁷ Cs在自然条件下的转移行为。测定了土壤、草、蔬菜和牛奶样品中⁹⁰ Sr 和¹³⁷ Cs的浓度。⁹⁰ Sr获得的土草转移因子是¹³⁷ Cs 的54 倍。草到奶的转移系数表明¹³⁷ Cs 比⁹⁰ Sr更容易进入牛奶。由于通过蔬菜和牛奶摄入⁹⁰ Sr 和¹³⁷ Cs，公众的总有效剂量估计为 2.29 μSv a ^-1，远低于 ICRP 建议的豁免水平。