Radon emanation is a well-known source of uncertainty at determination of activity concentration index for building materials and NORM. To reduce this uncertainty both radon emanation coefficient of the sample material and radon leakage from the measuring container should be considered. Two different methods (the rapid method and precise method, which requires to keep the sample sealed for at least three weeks), which are based on the use of only gamma-ray spectrometer, are proposed for testing radon emanation. Both methods also allow simultaneous determination of the specific activity of radium and an assessment of radon exhalation rate from the surface of the finished building products. In addition, the method for determination of radon leakage from the container is proposed. The reliability of the sealing methods of containers is compared and standard PET-flasks with a high radon-tightness are offered. The criteria to control radon leakage and radon emanation coefficient are given for three types of test samples: (a) building materials, (b) natural materials of mineral origin (sands, clays, rocks etc.), and (c) artificial materials, such as absorbents, filters, radioactive wastes. A simplified screening test to control activity concentration index for building materials without a need to keep the sample sealed before the measurement is proposed.

在确定建筑材料和NORM的活动浓度指数时，散是众所周知的不确定性来源。为了减少这种不确定性，应同时考虑样品材料的ra散发系数和从测量容器漏出的leakage。提出了两种方法（快速方法和精确方法，要求将样品密封至少三周），它们仅基于伽马射线能谱仪的使用，用于测试testing的散发。两种方法都可以同时测定镭的比活度，并可以评估建筑成品表面的ra析出率。另外，提出了一种确定determination从容器中泄漏的方法。比较了容器密封方法的可靠性，并提供了具有高ra气密性的标准PET烧瓶。针对三种类型的测试样品给出了控制ra泄漏和ra释放系数的标准：（a）建筑材料，（b）矿物来源的天然材料（沙，粘土，岩石等），以及（c）人造材料，例如吸收剂，过滤器，放射性废物。提出了一种简化的筛选测试，以控制建筑材料的活性浓度指数，而无需在测量前保持样品密封。（c）人造材料，例如吸收剂，过滤器，放射性废物。提出了一种简化的筛选测试，以控制建筑材料的活性浓度指数，而无需在测量前保持样品密封。（c）人造材料，例如吸收剂，过滤器，放射性废物。提出了一种简化的筛选测试，以控制建筑材料的活性浓度指数，而无需在测量前保持样品密封。