Howard B J, Wells C, Barnett C L, Howard D C
Centre for Ecology and Hydrology, Lancaster Environment Centre, Library Avenue, Bailrigg, LA1 4AP, UK.
Centre for Ecology and Hydrology, Lancaster Environment Centre, Library Avenue, Bailrigg, LA1 4AP, UK.
J Environ Radioact. 2017 Feb;167:254-268. doi: 10.1016/j.jenvrad.2016.10.018. Epub 2016 Dec 21.
Under the International Atomic Energy Agency (IAEA) MODARIA (Modelling and Data for Radiological Impact Assessments) Programme, there has been an initiative to improve the derivation, provenance and transparency of transfer parameter values for radionuclides from feed to animal products that are for human consumption. A description of the revised MODARIA 2016 cow milk dataset is described in this paper. As previously reported for the MODARIA goat milk dataset, quality control has led to the discounting of some references used in IAEA's Technical Report Series (TRS) report 472 (IAEA, 2010). The number of Concentration Ratio (CR) values has been considerably increased by (i) the inclusion of more literature from agricultural studies which particularly enhanced the stable isotope data of both CR and F and (ii) by estimating dry matter intake from assumed liveweight. In TRS 472, the data for cow milk were 714 transfer coefficient (F) values and 254 CR values describing 31 elements and 26 elements respectively. In the MODARIA 2016 cow milk dataset, F and CR values are now reported for 43 elements based upon 825 data values for F and 824 for CR. The MODARIA 2016 cow milk dataset F values are within an order of magnitude of those reported in TRS 472. Slightly bigger changes are seen in the CR values, but the increase in size of the dataset creates greater confidence in them. Data gaps that still remain are identified for elements with isotopes relevant to radiation protection.
在国际原子能机构（IAEA）的MODARIA（放射性影响评估建模与数据）计划下，已开展一项举措，旨在改善从饲料到供人类食用的动物产品中放射性核素转移参数值的推导、来源和透明度。本文描述了修订后的MODARIA 2016牛奶数据集。如先前关于MODARIA山羊奶数据集所报告的那样，质量控制导致IAEA技术报告系列（TRS）第472号报告（IAEA，2010年）中使用的一些参考文献被剔除。通过以下方式，浓度比（CR）值的数量大幅增加：（i）纳入更多农业研究文献，特别是增强了CR和F的稳定同位素数据；（ii）根据假定的活重估算干物质摄入量。在TRS 472中，牛奶数据分别为714个转移系数（F）值和254个CR值，描述了31种元素和26种元素。在MODARIA 2016牛奶数据集中，现在报告了基于825个F数据值和824个CR数据值的43种元素的F和CR值。MODARIA 2016牛奶数据集的F值与TRS 472中报告的值在一个数量级之内。CR值的变化稍大一些，但数据集规模的增加使人们对这些值更有信心。对于与辐射防护相关的同位素元素，仍存在数据空白。
