The Course in Time of the Strontium Retention in Man

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Abstract
The body burdens of 90Sr in 9 luminizers were determined in the time period of 900-2600 days following intake by excretion analysis using a power function; the power of the time in days b = 0.412 [pllus or minus] 0.072 was ascertained. A method is suggested for combining these results of analysis of the middle phase of the Sr retention with the results of the early phase. Using the data of Bishop et al. to describe the early phase leads to the exponent b = 0. 304 [plus or minus] 0.013, and to the initial correction = 0.259 [plus or minus] 0.077 days for the retention power function in Marhsall''s modified form. The terminal biological half-life for the late phase of retention is estimated to be T = 9000 [plus or minus] 1100 days by the use of the data available on stable Sr as well as the parameters b and e and using the value f1 = 20%. The 3 parameters b, t and T describe the retention of Sr during the whole course according to the relation [image] days.

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