火力发电厂动力机组水汽系统中,水或蒸汽中的硅(活性硅和全硅)的含量是水质控制的一项重要指标,特别是对高参数、大容量的机组。目前,我国许多火电厂都已装备了分光光度计等仪器用于含硅量等的测定。由于动力机组水汽系统各部位的水或蒸汽中硅含量的不同,因此用分光光度法测定时需要制作若干根不同浓度范围,比如0～100μg/l、 The thermal power plant water vapor system, water or steam in the silicon (active silicon and silicon) is an important indicator of water quality control, especially for high-parameter, high-capacity unit. At present, many of our thermal power plants are equipped with spectrophotometer and other equipment for the determination of silicon content. Due to the different contents of silicon in water or steam in the various parts of the water vapor system of the power unit, several different concentration ranges need to be made when measured by spectrophotometry, such as 0 to 100 μg / l,