| K2S2O8-离子色谱法测定水中总氮量 |
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| 引用本文： | 康勤书,周永强,陈浩. K2S2O8-离子色谱法测定水中总氮量[J]. 分析试验室, 2008, 27(5): 112-114 |
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| 作者姓名： | 康勤书 周永强 陈浩 |
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| 作者单位： | 华中农业大学理学院,武汉,430070 |
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| 摘 要： | 在不锈钢蒸汽消毒器中用K2S2O8将水中含氮物质中的N氧化为NO3-,用离子色谱测定,从而测定水中总氮量。实验对K2S2O8氧化液用量及反应时间等进行探讨,并对长江水中总氮量进行了测定。实验结果表明测定最佳条件是氧化时间10 min以上、氧化剂用量为理论用量的5倍;长江水(武汉段)总氮量为2.09 mg/L,测得的总氮量与文献报道的基本吻合。
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| 关 键 词： | 离子色谱法 总氮 K2S2O8 |
| 文章编号： | 1000-0720(2008)05-112-03 |
| 修稿时间： | 2007-03-27 |
Determination of total nitrogen in water samples by ion chromatography with potassium peroxodisulphate |
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| KANG Qin-shu,ZHOU Yong-qiang,CHEN Hao. Determination of total nitrogen in water samples by ion chromatography with potassium peroxodisulphate[J]. Chinese Journal of Analysis Laboratory, 2008, 27(5): 112-114 |
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| Authors: | KANG Qin-shu ZHOU Yong-qiang CHEN Hao |
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| Abstract: | The determination of total Nitrogen in water sample was studied by ion chromatography with potassium peroxodisulphate.Time of digestion and dosage of potassium peroxodisulphate were discussed in the experiments,it shows the optimal conditions include more than 10 min digestion and 5 times of potassium peroxodisulphate ideal dosage.Under the conditions,the N-samples in the simulative water and in Changjiang river were determined respectively.Good recovery of nitrogen shows it is feasible to determine the total Nitrogen in the water samples by this method.The total nitrogen from changjiang river in wuhan was 2.09 ppm and agreed well with the previouly reported values. |
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| Keywords: | Ion Chromatography Total Nitrogen Potassium peroxodisulphate |
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