论文部分内容阅读
一般常以硫酸钡重量法测定SO_4~(2-)含量,其操作手续繁复、分析时间长、且耗费较多的电。我们改用自制温度滴定仪,按自动滴定法测定明矾石矿氨浸液的SO_4~(2-)含量,简化了操作步骤,大大提高了分析工作效率。任何化学反应总是伴随着热效应;或放出热量;或吸入热量。这种热效应与反应物浓度有关,温度滴定法就是由化学反应体系温度变化来指示反应的起始点和终点,从而测得成份含量的一种容量分析方法。本方法设备简单,操作容易,
Generally, the content of SO_4 ~ (2-) in barium sulfate gravimetric method is usually measured. The procedure of operation is complex, the analysis time is long, and the electricity is consumed more. We use the self-made temperature titrator, according to the automatic titration of alum stone ammonia leaching solution SO 4 ~ (2) content, simplifying the operation steps, greatly improving the efficiency of the analysis. Any chemical reaction is always accompanied by a thermal effect; or emit heat; or inhale heat. This thermal effect and reactant concentration, temperature titration is the chemical reaction system temperature changes to indicate the starting point and the end of the reaction, which measured the content of a component of the capacity analysis. The method has the advantages of simple equipment, easy operation,