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1)  chemical oxygen demand
化学需氧量
1.
Relationship between the domestic sewage turbidityand chemical oxygen demand;
生活污水浊度与化学需氧量的关系
2.
A Quick Method for Determination of Chemical Oxygen Demand of Saponification Residue;
皂化残液化学需氧量的快速测定方法研究
3.
Research development on the modified method of the chemical oxygen demand determination;
化学需氧量测定改进方法的研究进展
2)  COD [英][,si: əʊ 'di:]  [美]['si 'o 'di]
化学需氧量
1.
Comparison of Monitoring COD in Water with Rapid Monitoring Method and Potassium Dichromate Method;
快速测定法和重铬酸钾法测定水中化学需氧量之比较
2.
DETERMINATION OF COD IN WASTEWATER EFFLUENTS BY MERCURY-FREE CLOSE-TUBE METHOD;
无汞盐密封法测定高氯浓度水样的化学需氧量
3.
The Proficiency Testing of Lower COD in Water is Verified;
水中超低浓度化学需氧量检测的能力验证
3)  chemical oxygen demand(COD)
化学需氧量
1.
Development of Determination of Chemical Oxygen Demand(COD) by UV Absorption Spectrum;
紫外吸收光谱法直接测定化学需氧量的研究进展
2.
A method is proposed for the determination of chemical oxygen demand(COD) in environmental water samples with merging zone stop-flow injection spectrophotometry in KMnO4 system.
研究了KMnO4体系流动注射合并带停留分光光度法对环境水样中化学需氧量(COD)测定的试验条件,包括反应试剂KMnO4的浓度、载流H2SO4的酸度、采样泵泵速及停留时间、反应温度、试剂体积和采样环体积。
3.
To rapidly determine the pollution extent of wastewater,the potential of near infrared(NIR) spectroscopy for measurement of chemical oxygen demand(COD) in wastewater was investigated.
为快速确定废水的污染程度,研究了运用近红外光谱法测量废水化学需氧量(COD)的可行性。
4)  CODcr
化学需氧量
1.
Study of detections for the CODcr in the waste water with model JHR-1 saving energy COD thermostatic heater;
JHR-1型节能COD恒温加热器测定废水中化学需氧量(CODcr)方法探讨
2.
The result showed that the effluent condition was very stable and had a high CODcr removal rate, the average removal rate was between 75 % and 80 % and the hydrophilicity of fiber could greatly improve the effluent condition.
结果表明:处理后出水稳定,化学需氧量CODcr去除率高,平均CODcr去除率在75% ̄80%;改善填料的亲水性能有利于提高出水水质,选用的聚丙烯腈纤维和聚乙烯醇纤维在同等处理条件下的处理效率分别高出参照纤维聚丙烯6。
3.
Ultraviolet spectrophotometry is used to determine the CODCr of landfill leachate.
采用紫外分光光度法对垃圾渗沥液中的化学需氧量(Chemical Oxygen Demand,CODCr)进行了测定。
5)  Chemical oxygen demand (COD)
化学需氧量
1.
The purpose of studying the correlation of total organic carbon (TOC) with permanganate index and chemical oxygen demand (COD) has been stated.
叙述了研究总有机碳与高锰酸盐指数及化学需氧量相关关系的目的。
2.
The results showed that the removal efficiency of chemical oxygen demand (COD) and decoloration efficiency were above 95%.
结果表明,经过该法处理后,废水中的化学需氧量(Chemical Oxygen Demand ,COD) 和色度的去除率都在95 % 以上。
3.
In this paper, ion interferences in the flow injection analysis (FIA) of Chemical Oxygen Demand (COD) using Boron-Doped Diamond (BDD) electrode were investigated and a mathematical method for chloride reduction was proposed.
本文对掺硼金刚石(BDD)膜电极结合流动注射(FIA)化学需氧量(COD)测定的干扰离子进行分析,并提出消除氯离子干扰的有效方法。
6)  chemical oxygen demand
化学需氧量(COD)
补充资料:化学需氧量
      水体中能被氧化的物质在规定条件下进行化学氧化过程中所消耗氧化剂的量,以每升水样消耗氧的毫克数表示,通常记为COD。水中各种有机物进行化学氧化反应的难易程度是不同的,因此化学需氧量只表示在规定条件下水中可被氧化物质的需氧量的总和。化学需氧量主要反映水体受有机物污染的程度。
  
  当前测定化学需氧量常用的方法有:①高锰酸钾法:用0.01N 高锰酸钾的酸性溶液为氧化剂,加入水样,煮沸10分钟,或者将水样放在沸水浴中煮30分钟,然后将高锰酸钾消耗量折算成每升水样耗氧的毫克数。此法多用于测定较清洁的水样。测定结果在1毫克/升以下表示水体很清洁;大于3~4毫克/升者表示水体已受到明显污染。②重铬酸钾法:以0.250N 重铬酸钾强酸溶液为氧化剂,以硫酸银为催化剂,加入水样,使之回流两小时,然后将重铬酸钾的消耗量折算为每升水样耗氧的毫克数。此法的氧化程度比高锰酸钾法高,用于污染严重的水和工业废水的水样。同一水样用上述两种方法测定的结果是不同的,因此在报告化学需氧量的测定结果时要注明测定方法。
  

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