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碳是钢铁中主要测定元素,已知的测定方法颇多,而各方法均有其测量范围,其中适应性最强的要算非水法了,它对高、低含量的碳均能测到较为满意的结果,因此近来在国内外被广泛地使用于日常分析中.由于非水法是用肉眼来判断滴定终点,所以对测定精度带来一定影响.曾有人采用光电效应的原理来监控滴定终点.鉴于通常在非水体系中要加入易吸收二氧化碳的有机胺,这样的非水溶液就具有一定的缓冲能力,其结果使得满定无明显的突跃点,所
Carbon is the main determinant element in steel. There are many known measurement methods, and each method has its measuring range. Among them, the most adaptable one is non-water method, which can measure both high and low carbon content More satisfied with the results, it has recently been widely used in domestic and international analysis in the routine because the non-aqueous method is to use the naked eye to determine the end of the titration, so the measurement accuracy to a certain extent Some people have used the principle of photoelectric effect to monitor the titration Since non-aqueous systems usually incorporate readily absorbed carbon dioxide into organic amines, such non-aqueous solutions have some buffering capacity that results in no significant jumps in fullness