Beresford N A
Institute of Terrestrial Ecology, Merlewood Research Station, Cumbria, Great Britain.
Sci Total Environ. 1989 Sep;85:81-90. doi: 10.1016/0048-9697(89)90307-0.
The transfer of Ag-110m from the Chernobyl fallout to sheep tissues is discussed. Ag-110m was only detected in the liver and occasionally the brain of the sheep analysed. The transfer of Ag-110m associated with perennial rye-grass, harvested soon after deposition in 1986, was greater to the liver of both ewes and lambs than that of Cs-137. Transfer coefficients of Ag-110m for lamb liver exceeded those for ewe livers. However, in a 1987 field study there was no difference between transfer coefficients of Ag-110m for ewes and lambs. It is suggested that there is a slow turnover of Ag-110m in the liver of sheep and that unlike radiocaesium, Ag-110m from the Chernobyl fallout did not become more available once incorporated into plant tissues.
讨论了切尔诺贝利放射性沉降物中的银 - 110m向绵羊组织的转移情况。在所分析的绵羊中，仅在肝脏中检测到银 - 110m，偶尔在大脑中也能检测到。1986年沉降后不久收获的多年生黑麦草所含的银 - 110m，向母羊和羔羊肝脏的转移量均大于铯 - 137。羔羊肝脏中银 - 110m的转移系数超过了母羊肝脏。然而，在1987年的一项田间研究中，母羊和羔羊的银 - 110m转移系数并无差异。研究表明，绵羊肝脏中银 - 110m的周转缓慢，并且与放射性铯不同，切尔诺贝利放射性沉降物中的银 - 110m一旦被植物组织吸收，并不会变得更容易被利用。
