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1 水中碱度与氯根的连续测定在水质化验中,锅炉水的碱度、氯根是低压锅炉水质标准中重要的两项指标。根据常规分析方法,碱度与氯根均要单独测定。测定锅水氯根时,常需用酸中和溶液在中性条件下再进行滴定。依据酸碱滴定和沉淀滴定的原理,条件不同,选用使其互不干扰的指示剂,从而拟定出酚酞碱度,甲基橙碱度、氯根的连续测定方法。
A continuous determination of water alkalinity and chloride In water quality testing, boiler water alkalinity, chloride is the low pressure boiler water quality standards two important indicators. According to the conventional analysis method, alkalinity and chloride root should be determined separately. Determination of pot chlorine, often need acid neutralization solution in the neutral conditions and then titration. According to the principles of acid-base titration and sedimentation titration, the conditions are different, and the indicators are selected so that they do not interfere with each other. Thus, the determination methods of phenolphthalein basicity, methyl orange basicity and chloride root are drawn up.