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Determination of chemical oxygen demand in aqueous samples with non-electrochemical methods
Trends in Environmental Analytical Chemistry ( IF 11.2 ) Pub Date : 2017-05-24 , DOI: 10.1016/j.teac.2017.05.002
Jian Ma

Water contamination is a globally important environmental concern, with chemical oxygen demand (COD) being a criteria in water quality assessment, providing information on the availability of chemically degradable fractions of organic pollutants. However, the standard method for COD analysis is time-consuming and results may vary between laboratories. Efforts to resolve these problems have mostly focussed on improvements to both digestion and detection techniques and this review addresses recent trends in the determination of COD in aqueous samples, based on published literature since 2000. The features of principal methods are critically reviewed, focusing on their practical applicability. This review includes an overview of: 1) standard methods; 2) novel digestion techniques; 3) varying detection methods, such as chemiluminescence, spectrophotometry and others; 4) and future trends in COD measurements. Electrochemical techniques are excluded, as despite their importance as an environmental friendly alternative for COD measurement, these methods have only recently been developed and require a full and separate review.



中文翻译:

非电化学方法测定水性样品中的化学需氧量

水污染是全球重要的环境问题,化学需氧量(COD)是水质评估的标准,可提供有关有机污染物可化学降解部分的可用性的信息。但是,用于COD分析的标准方法非常耗时,并且不同实验室之间的结果可能会有所不同。解决这些问题的努力主要集中在改进消化和检测技术上,本综述基于2000年以来发表的文献,着眼于测定含水样品中COD的最新趋势。实际适用性。这篇综述包括以下内容的概述:1)标准方法;2)新颖的消化技术;3)多种检测方法,例如化学发光法,分光光度法等 4)COD测量的未来趋势。电化学技术被排除在外,因为尽管它们作为COD测量的环境友好替代品的重要性,但这些方法只是最近才被开发出来,需要进行全面且单独的审查。

更新日期:2017-05-24
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