BS ISO 13164-4:2015描述了测定氡-222（222Rn）活性的试验方法 通过萃取和液体闪烁计数在非盐水中的浓度。氡-222放射性浓度，可通过目前使用的本试验方法进行测量 对于10毫升的测试样品，可用仪器至少高于0.5 Bq l-1，测量时间为1小时。该测试方法可成功用于饮用水样品，由 实验室应确保本试验方法对未经试验基质水样的有效性。 附录A给出了必要的计数条件，以满足所需的检测限 饮用水监测。交叉引用:ISO 3696ISO 80000-10ISO/IEC 17025ASTM D5072-09ISO 8258ISO/IEC指南98- 3 GUM:1995EURACHEM/CITAC指南CG4:2012ISO 5667-1ISO 5667-3ISO 5667-14ISO 11929ISO 13164-1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。

BS ISO 13164-4:2015 describes a test method for the determination of radon-222 (222Rn) activity concentration in non-saline waters by extraction and liquid scintillation counting.The radon-222 activity concentrations, which can be measured by this test method utilizing currently available instruments, are at least above 0,5 Bq l-1 for a 10 ml test sample and a measuring time of 1 h.This test method can be used successfully with drinking water samples and it is the responsibility of the laboratory to ensure the validity of this test method for water samples of untested matrices. Annex A gives indication on the necessary counting conditions to meet the required detection limits for drinking water monitoring.Cross References:ISO 3696ISO 80000-10ISO/IEC 17025ASTM D5072-09ISO 8258ISO/IEC Guide 98-3GUM:1995EURACHEM/CITAC Guide CG4:2012ISO 5667-1ISO 5667-3ISO 5667-14ISO 11929ISO 13164-1All current amendments available at time of purchase are included with the purchase of this document.