| 碘化钾碱性高锰酸钾法测定化学需氧量有关问题的释疑 |
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| 引用本文： | 张士权,李英芹,范俊欣.碘化钾碱性高锰酸钾法测定化学需氧量有关问题的释疑[J].油气田环境保护,2005,15(2):45-47. |
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| 作者姓名： | 张士权 李英芹 范俊欣 |
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| 作者单位： | 中国石油环境监测总站 |
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| 摘 要： | 最常见的化学需氧量(COD)的测定方法是铬酸钾法和高锰酸钾法。但用上述两种方法测定废水中COD时易受到氯离子的干扰。为此,提出了用“碘化钾碱性高锰酸钾法”消除氯离子干扰的机理。对碘化钾高锰酸钾法验证的结果表明,该方法适用于测定油气田和炼化企业高氯、低氯废水的COD。求出用碘化钾高锰酸钾法与铬酸钾法测定的COD比值,可将碘化钾碱性高锰酸钾测定法的CODOH.KI换算成铬酸钾法的CODCr值来衡量水体的有机物污染情况及判断废水是否达到排放标准。
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| 关 键 词： | 碘化钾 高锰酸钾 化学需氧量 测定方法 |
| 收稿时间： | 01 7 2005 12:00AM |
| 修稿时间： | 2005年1月7日 |
Potassium Iodide-Potassium Permanganate Method Used to Determine Chemical Oxygen Demand |
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| Zhang Shiquan,Li Yingqin,Fan Junxin.Potassium Iodide-Potassium Permanganate Method Used to Determine Chemical Oxygen Demand[J].Environmental Protection of Oil & Gas Fields,2005,15(2):45-47. |
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| Authors: | Zhang Shiquan Li Yingqin Fan Junxin |
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| Institution: | PetroChina Environmental Monitoring Station |
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| Abstract: | The common methods for determining chemical oxygen demand (COD) contain potassium chromate and potassium permanganate. Those methods have some disadvantage such as chlorion disturbance. A new method for removing chlorion disturbance named potassium iodide-potassium permanganate is proposed. The test shows that this method is suitable for measuring COD of high-chlorinate and low-chlorinate wastewater produced from oil-gas fields and refineries. The ratio of COD from potassium iodide-potassium permanganate to that from potassium chromate can be used to identify pollutants in wastewater and realize wastewater emission standard. |
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| Keywords: | potassium chromate potassium permanganate chemical oxygen demand measuring method |
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