摘要
本文较为全面地论述了COD测定方法的发展与研究现状。在论述了国标中COD标准方法不足之处的基础上,本文就标准方法的众多改进措施分类进行了比较与探讨,包括消解方法的改进、替代催化剂的研究以及氯离子干扰的消除,然后介绍了相关系数法、电化学法、分光光度法和流动注射法等COD测定替代技术。本文认为,研究试剂用量少、无污染的绿色COD测定方法具有重要而积极的意义,而研究适应性强、运行可靠、性价比高的COD在线监测仪则是COD监测的发展趋势。
This paper summarizes the research progress of COD determination methods overall at present. Based on the shortcomings of the COD determination method revised in National Standard, some improvement measures of the standard method, including (improvement) of slaking phrases, research of substitution catalysts and elimination of chlorine ion disturbance, are compared and (discussed.) Afterwards, some alternative methods, such as correlation coefficient analysis method, electrochemical analysis method, (spectrophotometric) analysis method, and flow inject analysis method, are introduced. At last, the authors point out the developing trend of COD determination method, a green COD determination method with less reagent consumption and no pollution, and the developing trend of COD monitoring,COD online monitoring instrument with wide adaptability and high performance-price ratio.
出处
《四川环境》
2005年第1期40-43,共4页
Sichuan Environment
