Fabbri S, Piva G, Sogni R, Fusconi G, Lusardi E, Borasi G
Unità Sanitaria Locale n.2, P.M.P., Piacenza, Italy.
Health Phys. 1994 Apr;66(4):375-9. doi: 10.1097/00004032-199404000-00001.
A experiment was conducted to study kinetics, transfer coefficients, and biological half-lives of 90Sr, 134Cs, and 137Cs from feed to milk. A cow was fed a diet containing alfalfa hay contaminated by Chernobyl fallout for 14.5 wk. The time-dependent activity in milk was approximated by a two-compartment model with fast biological half-lives of 2, 0.9, and 1 d and slow biological half-lives of 36.9, 8.7, and 12.4 d for 90Sr, 134Cs, and 137Cs, respectively. The transfer coefficients determined in the experiment were 0.0008 d L-1 for 90Sr, 0.0029 d L-1 for 134Cs, and 0.0031 d L-1 for 137Cs. The biological elimination phases of 134Cs and 137Cs were described by a two-compartment model while a one-compartment model was proposed for 90Sr.
进行了一项实验，以研究90Sr、134Cs和137Cs从饲料到牛奶的动力学、转移系数和生物半衰期。给一头奶牛喂食含有受切尔诺贝利沉降物污染的苜蓿干草的日粮，持续14.5周。牛奶中随时间变化的活度通过一个两室模型进行近似，对于90Sr、134Cs和137Cs，其快速生物半衰期分别为2天、0.9天和1天，慢速生物半衰期分别为36.9天、8.7天和12.4天。实验确定的转移系数对于90Sr为0.0008 d L-1，对于134Cs为0.0029 d L-1，对于l37Cs为0.0031 d L-1。134Cs和137Cs的生物消除阶段用两室模型描述，而90Sr则提出用一室模型。
