本文件规定了一种测定一批矿物基建筑材料游离氡析出率的方法。本文件仅涉及使用两种试验方法测定222Rn呼气:液体闪烁计数法（LSC）和伽马射线光谱法（见附录A和附录B）。 当采用本文件所述的测定方法时，thoron（220Rn）的呼气不会影响试验结果。交叉引用:ISO 11665-1ISO 11929ISO/IEC 17025NEN 5699ISO 13164（所有部分）ISO 19361购买本文件时提供的所有当前修订版均包含在购买本文件中。

This document specifies a method for the determination of the free radon exhalation rate of a batch of mineral based building materials. This document only refers to222Rn exhalation determination using two test methods: liquid Scintillation Counting (LSC) and gamma ray spectrometry (see Annex A and Annex B). The exhalation of thoron (220Rn) does not affect the test result when applying the determination methods described in this document.Cross References:ISO 11665-1ISO 11929ISO/IEC 17025NEN 5699ISO 13164 (all parts)ISO 19361All current amendments available at time of purchase are included with the purchase of this document.