作为氡衰变的长寿命子体的210 Po是具有α衰变的极毒性且挥发性较强的核素，容易吸附在气溶胶中，随呼吸进入人体从而造成内照射，危害人体健康，深受研究者的关注。本文将微波消解法用于测定气溶胶中210 Po的活度浓度，结果表明：微波消解方法获得的结果比传统方法高8％～36％，而且测量时间由传统方法的8天缩减为2天，并可同时处理更多的样品数量。相比于传统方法，大大加快了样品处理的速度，降低了损失率。%Polonium-210 , as the long-life progeny of radon decay , is a kind of highly toxic and volatile nu-clide with strong alpha decay which can be easily adsorbed in aerosol .If breathed into the human body , internal exposure will be caused to endanger human body health which attracts many researchers 'attention.In this pa-per, a method using the microwave digestion technology to measure 210 Po in atmospheric aerosol was presented . The results showed that 210 Po in atmospheric aerosol was digested more sufficiently using the microwave system . Dissolution rate was increased by 8%~36% depending on the radioactivity concentration .The experimental period decreased from 8 days to 2 days.Compared with the existing methodology , we could handle more sam-ples at the same time .The method greatly increased the speed of the sample processing and reduced the loss rate.
展开▼
