化学需氧量测定方法的研究与探讨

Research and Discussion on Detection of Chemical Oxygen Demand

化学需氧量是评价水体有机物污染的重要指标之一,是常规分析测试的主要项目。阐述了标准回流法中催化剂、掩蔽剂、消解方法、氧化剂方面的研究,探讨了分光光度法、电化学法、动力学法、流动注射分析法、相关系数法、原子吸收法等测定方法的发展研究,同时,介绍了COD在线自动监测,提出了化学需氧量测定方法的趋势,为环境监测工作提供有利价值。

Chemical oxygen demand was an important indicator of organic pollution evaluation of water, which is one of the main items of conventional analytical testing. The catalyst, masking agents, digestion method, oxidant in the standard reflux method were described . The development of methods such as spectrophotometry, electrochemistry, kinetics, flow injection analysis, correlation coefficient, atomic absorption spectrometry determination were discussed. Besides, the COD-line automatic monitoring is introduced. The trend of chemical oxygen demand determination method was put forward, which provided a favorable value for environmental monitoring.