重铬酸盐法和快速消解分光光度法测定废水中 化学需氧量的分析比较  

Analysis and Comparison of the Determination of Chemical Oxygen Demand in Wastewater Using Dichromate Method and Rapid Digestion Spectrophotometry

作　　者：戴巧容 Dai Qiaorong(Pingshan Management Bureau of Shenzhen Ecological Environment Bureau,Shenzhen 518122,China)

机构地区：[1]深圳市生态环境局坪山管理局,广东深圳518122

出　　处：《皮革制作与环保科技》2024年第21期5-6,9,共3页Leather Manufacture and Environmental Technology

摘　　要：化学需氧量(COD)是衡量水体受还原性物质污染程度的关键参数,也是评估水体中有机物相对含量的一项重要指标。在实验室分别采用重铬酸盐法和快速消解分光光度法测定水样的COD,并根据测量结果对两种方法进行比较。首先从实验设计、数据处理入手,深入研究这两种方法的特点与差异,再通过实例说明如何利用这些方法测试不同样品类型,最后进行总结并提出建议。Chemical oxygen demand is a key parameter for measuring the degree of pollution caused by reducing substances in water,and it is also an important comprehensive indicator for evaluating the relative content of organic matter in water.The chemical oxygen demand(COD)in water samples was measured using the dichromate method and rapid digestion spectrophotometry in the laboratory,and the two methods were compared based on the measurement results.First of all,the characteristics and diff erences of the two methods are deeply studied from the aspects of experimental design and data processing.Examples are then given to show how these methods can be used to test diff erent sample types.Finally,summarize and give some suggestions.

关 键 词：工业废水 重铬酸盐法 快速消解分光光度法 化学需氧量 

分 类 号：TS5[轻工技术与工程—皮革化学与工程]