| 摘要: |
| 针对现行总氮标准测定方法存在的操作繁琐、耗时长等缺点，采用COD消解加热器消解代替原标准方法中的高温高压消解步骤，以简化实验步骤、缩短用时，建立快速测定水中总氮的分析方法。通过对本方法进行平行实验、加标回收实验以及与标准方法的对比实验等分析实验结果，方法的线性范围为0～4.00mg/L，平均加标回收率是102.3%，标样平行实验的相对标准偏差是1.05%，准确度、精确度和回收率均达到标准要求，方法具有一定的推广价值。 |
| 关键词: 总氮 快速测定 COD消解加热器 |
| DOI： |
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| Study on Rapid Determination Method of Total Nitrogen in Water |
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| Abstract: |
| A rapid determination method of total nitrogen using a COD digestion heater was introduced. The method overcame the shortcomings of the standard method which were complicated and time-consuming. The parallel test, recovery test and the comparing test with standard method were tried. The linear range of the method was 0～4.00mg/L. The average recoveries were 102.3%. Parallel experimental relative standard deviation was 1.05%. This method was novel, simple and precise. This method has no significant difference in accuracy, precision and recovery compared to the standard method and possessed of popularization and application value. |
| Key words: total nitrogen the rapid determination COD digestion heater |
