通常可用简单仪器来检出和定量地测定放射性物质,其灵敏度是远非其它分析技术所能达到的,在理论上,如果一非放射性物质与一放射性物质定量地起反应,并且形成的化合物能够从未起反应的放射性物质中分离出来,则非放射性物质即便量非常少,亦能分析出来。本法在于在滤纸上由放射性物质和非放射性物貭形成一种沉淀,洗滌該滤紙,以除去未 A simple instrument is usually used to detect and quantify radioactive material, which is far less sensitive than other analytical techniques. Theoretically, if a non-radioactive material and a radioactive material react quantitatively and the resulting compound is capable of From non-reactive radioactive material isolated, the non-radioactive material even very small amount can also be analyzed. The law consists in forming a precipitate from radioactive and non-radioactive substances on filter paper, washing the filter paper to remove