BS ISO 19361:2017适用于液体闪烁计数器，并要求准备闪烁计数器 通过混合测试样品和闪烁鸡尾酒获得的光源。测试样品可以是液体 （水或有机）或固体（颗粒、过滤器或刨花）。本文件描述了通过以下方法测量β放射性核素放射性活度的条件: 液体闪烁计数。使用液体闪烁计数的试验方法的选择涉及到电位的考虑 测试样品中是否存在其他β辐射源放射性核素。在这种情况下，需要进行特定的样本处理 通过分离或提取来隔离感兴趣的放射性核素，以避免 在计数阶段对其他发射β、α和γ放射性核素的干扰。本文件适用于活性浓度范围为 几个Bq？l-1到106 Bq？l-1。对于液体试样，可以稀释液体试样，以便 获得与测量仪器相容的溶液。对于固体样品 准备好的闪烁源的活性应与测量仪器兼容。测量范围与所使用的试验方法有关:试验部分的性质、样品的制备 闪烁体-测试部分混合物、测量组件以及共存物的存在 干扰放射性核素引起的活动。供试品制备（例如，用于3H测量的蒸馏，或用于14C的苯合成 测量等）不在本文件的范围内，具体测试方法中对此进行了描述 使用液体闪烁。交叉引用:ISO/IEC 17025:2005 ISO 5667-1:2006第2版（R10）ISO 5667-3: 2012年ED4ISO 18589-2:2015年ED2ISO 11929:2010年Ed 1ISO/IEC指南98-3:2008 Ed 1ISO 80000-10:2009 Ed 1ISO 7870-2:2013ISO 9698:2010 Ed 2ISO 11704:2010 Ed 1ISO 13168:2015ISO 13162:2011 Ed 1ISO 13164-4:2015ISO 13165-1:2013 ED1ISO/IEC指南99:2007 ISO 18589-5:2009 Ed 1购买本文件时提供的所有现行修订版均包含在购买本文件中。

BS ISO 19361:2017 applies to liquid scintillation counters and requires the preparation of a scintillation source obtained by mixing the test sample and a scintillation cocktail. The test sample can be liquid (aqueous or organic), or solid (particles or filter or planchet).This document describes the conditions for measuring the activity of beta emitter radionuclides by liquid scintillation counting.The choice of the test method using liquid scintillation counting involves the consideration of the potential presence of other beta emitter radionuclides in the test sample. In this case, a specific sample treatment by separation or extraction is implemented to isolate the radionuclide of interest in order to avoid any interference with other beta-, alpha- and gamma-emitting radionuclides during the counting phase.This document is applicable to all types of liquid samples having an activity concentration ranging from a few Bq?l-1 to 106 Bq?l-1. For a liquid test sample, it is possible to dilute liquid test samples in order to obtain a solution having an activity compatible with the measuring instrument. For solid samples, the activity of the prepared scintillation source shall be compatible with the measuring instrument.The measurement range is related to the test method used: nature of test portion, preparation of the scintillator - test portion mixture, measuring assembly as well as to the presence of the co-existing activities due to interfering radionuclides.Test portion preparations (such as distillation for 3H measurement, or benzene synthesis for 14C measurement, etc.) are outside the scope of this document and are described in specific test methods using liquid scintillation.Cross References:ISO/IEC 17025:2005ISO 5667-1:2006 Ed 2 (R10)ISO 5667-3:2012 ED4ISO 18589-2:2015 ED2ISO 11929:2010 Ed 1ISO/IEC GUIDE 98-3:2008 Ed 1ISO 80000-10:2009 Ed 1ISO 7870-2:2013ISO 9698:2010 Ed 2ISO 11704:2010 Ed 1ISO 13168:2015ISO 13162:2011 Ed 1ISO 13164-4:2015ISO 13165-1:2013 ED1ISO/IEC Guide 99:2007ISO 18589-5:2009 Ed 1All current amendments available at time of purchase are included with the purchase of this document.