核电厂蒸汽发生器淤泥中主要金属元素的电感耦合等离子体发射光谱分析方法研究

Analysis Method Research on Main Metal Element of Steam Generator Sludge by Inductively Coupled Plasma Optical Emission Spectrometer in Nuclear Power Plant

摘要: 核电厂蒸汽发生器淤泥组成成分及其变化趋势对二回路水化学工况控制起着重要的评价和指导作用。本文开发了湿法消解电感耦合等离子体发射光谱联用分析方法，并将其应用于核电厂蒸汽发生器淤泥元素成分的定量分析。结果显示，淤泥中的主要元素有铝、钙、铬、铁、镁、锰、镍，各元素的质量分数为0.69%～67.76%。本方法的加标回收率为84.3%～110.7%，相对标准偏差不超过0.60%(n=7)，方法的检测限为0.04～3.10 μg/L。

Abstract: The composition and composition change trend of steam generator sludge play an important role in the evaluation and guidance for the secondary circuit water chemical control in nuclear power plant. Wet digestion-inductively coupled plasma optical emission spectrometry combination method was developed, which was applied on element quantitative analysis of steam generator sludge in nuclear power plant. The major element components contain aluminium, calcium, chromium, iron, magnesium, manganese and nickel with the mass percent content of 0.69%-67.76%. The adding standard recovery rates ranging from 84.3% to 110.7% are obtained. The relative standard deviations of concentration are not more than 0.60% (n=7). The detection limits of the analysis method are in the range of 0.04-3.10 μg/L.