Given the bacteriology and taking into account the chemical oxygen demand, plus we have a bit of tributyl phosphate — not a product I see very often.
考虑到细菌学和化学需氧量，再加上我们发现有一点磷酸三丁酯——这不是我经常看到的产物。
| 单词 | Chemical oxygen demand |
| 释义 |
Chemical oxygen demand
原声例句
环境与科学 Given the bacteriology and taking into account the chemical oxygen demand, plus we have a bit of tributyl phosphate — not a product I see very often. 考虑到细菌学和化学需氧量，再加上我们发现有一点磷酸三丁酯——这不是我经常看到的产物。 CHINA DAILY Total emissions of chemical oxygen demand and ammonia nitrogen will see an 8-percent drop, and that of oxynitride and volatile organic compounds will be reduced by more than 10% from 2020 levels, said the plan. 化学需氧量、氨氮、氮氧化物、挥发性有机物排放总量比2020年分别下降8%、8%、10%以上、10%以上。
中文百科
化学需氧量化学需氧量（英语：COD，Chemical Oxygen Demand）是以化学方法测量水样中有机物被强氧化剂氧化时所消耗之氧的相当量，用以表示水中有机物量的多寡。水样在一定条件下，以氧化1升水样中还原性物质所消耗的氧化剂的量为指标，折算成每升水样全部被氧化后，需要的氧的毫克数，以mg/L表示。它反映了水中受还原性物质污染的程度。该指标也作为有机物相对含量的综合指标之一。 化学需氧量还可与生化需氧量（BOD）比较，BOD/COD的比率反映出了污水的生物降解能力。
英语百科
Chemical oxygen demand 化学需氧量In environmental chemistry, the chemical oxygen demand (COD) test is commonly used to indirectly measure the amount of organic compounds in water. Most applications of COD determine the amount of organic pollutants found in surface water (e.g. lakes and rivers) or wastewater, making COD a useful measure of water quality. It is expressed in milligrams per liter (mg/L), which indicates the mass of oxygen consumed per liter of solution. |
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