体内氡及其子体

长期吸入氡将在人体脂肪和体液中形成氡的贮存库。倘若一个人由氡浓度较高的环境转移到氡浓度较低的环境,将呼出贮存在体内的氡。氡的初始呼出率取决于吸入的氡浓度。本文描述了体内氡及其子体的行为,以及氡呼出率与进食后时间的关系。已经观察到饭后氡呼出率有较大的、但持续时间不长的增加。进食对体内没有镭的人的氡呼出率的影响与对体内有镭的人的氡呼出率的影响是类似的。应该指出胸腔内的大量的氡子体的放射性可能影响对体内钚或其他锕系元素的测量。

RADON AND ITS DAUGHTERS IN VIVO

Prolonged exposure to radon should build up a reservoir ofradon in body fat and fluids.Move of the subject to an environment witha lower radon concentration from an environment with a higher level ofradon would result in an exhalation of radon,and the initial exhalationrate of radon should depend on the radon concentration inhaled.This paper describes the behavior of radon and its daughters in vivoand a relationship between the radon exhalation rate and the time after a meal.A major but short-lived postprandial increase in the exhalation rate of radonwas observed.We report a similar effect in the exhalation rate of redonby persons containing no radium.It should be noted that the possibility exists that a large amount of radondaughters in the chest may interfere in the investigation of possible internalcontamination with plutonium or other actinides by external counting.