活化分析普遍采用“相对法”,所用的对照标准是将标准溶液封于石英安瓿瓶中或滴在高纯滤纸或聚乙烯薄膜上,这些标准有不易浸取、或空白干扰大、或易择发元素损失等缺点。本方法用苯酚和甲醛在氨性介质中合成酚醛树脂。在甲阶树脂中加入所需种类和浓度的标准溶液成均相分配,然后经过固化、粉碎、研磨,在模具中压成φ8×2mm的圆片待用。此标准 Activation analysis commonly used “relative law”, the control standard used is the standard solution sealed in quartz ampoules or drops in high-purity filter paper or polyethylene film, these standards are not easy to leach, or blank interference, or easy to choose Hair loss and other shortcomings. The method uses phenol and formaldehyde to synthesize phenolic resin in ammonia medium. In the first-class resin by adding the desired type and concentration of the standard solution into the homogeneous distribution, and then after curing, grinding, grinding, pressed into a mold φ8 × 2mm wafers to be used. This standard