环境样品中<sup>90</sup>Sr和<sup>239+240</sup>Pu的联合分析

环境样品中⁹⁰Sr和^239+240Pu的联合分析

摘要: 针对气溶胶、沉降灰、土壤、生物及淡水等环境样品中⁹⁰Sr、^239+240Pu的联合分析进行了流程设计，并通过实际样品的测量对流程进行了验证。结果表明：⁹⁰Sr分析流程的化学回收率为44.3%~90.2%，平均值为73.8%；^239+240Pu分析流程的放化回收率为40.2%~104.3%，平均值为79.3%。在可给出单个样品化学（放化）回收率的前提下，该联合分析流程可以满足日常环境监测的要求。

Abstract: A procedure for joint analyses of ⁹⁰Sr and ^239+240Pu in aerosol, fallout, soil, biology and freshwater samples is reported. The procedure is validated by application to real samples. According to the measurement results, chemical recoveries of ⁹⁰Sr are in the range of 44.3%-90.2%, and the average is 73.8%; radiochemical recoveries of ^239+240Pu are in the range of 40.2%-104.3%, and the average is 79.3%. Under the premise that each sample has its own chemical (radiochemical) recovery, the procedure can satisfy the demand of the environmental monitoring.