| 流动注射分析法测定水样中的NO2--N和NO3--N |
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| 引用本文： | 罗喜清. 流动注射分析法测定水样中的NO2--N和NO3--N[J]. 广西科学, 2001, 8(2): 108-110 |
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| 作者姓名： | 罗喜清 |
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| 作者单位： | 罗喜清（江苏江阴兴澄钢铁有限公司质量处江苏江阴市214400） |
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| 摘 要： | 采用流动注射技术测定水样中的NO-/2-N和NO-/3-N.以N-(1-萘基)乙烯二胺盐酸盐和对氨基苯磺酸为显色剂,在540nm下比色测定NO-/2-N的含量.水样中的NO-/3-N,在稀醋酸条件下用锌粉将其预还原成NO-/2-N后,也在上述相同的条件下测定其含量.NO-/2-N的检出限为0.005×10-/6,NO-/3-N的检出限为0.05×10-/6,分析速度为65次/小时.
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| 关 键 词： | 水样 流动注射分析法 测定 硝态氮 亚硝态氮 |
| 收稿时间： | 2000-09-12 |
| 修稿时间： | 2000-09-12 |
Determination of NO2--N & NO3--N in Water Samples by Flow Injection Analysis |
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| Luo Xiqin. Determination of NO2--N & NO3--N in Water Samples by Flow Injection Analysis[J]. Guangxi Sciences, 2001, 8(2): 108-110 |
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| Authors: | Luo Xiqin |
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| Affiliation: | Quality Department, Jiangsu Jiangyin Xincheng Iron and Steel Co., Ltd, Jiangyin, Jiangsu, 214400, China |
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| Abstract: | Flow injection analysis was used to detect the contents of NO2--N and NO3--N in water samples. The N-(1-naphthyl) ethylenediamine hydrochloride and p-aminobenzenesulfonic acid were used as chromogenic agents. The content of NO2--N was detected at 540 nm. The NO3--N in water samples was pre deoxidized to NO2--N by zinc powder under dilute acetic acid and then detected in the same condition. The detection limit of NO2--N is 0.005×10-6,and the detection limit of NO3--N is 0.05×10-6.The analysis speed is 65 times per hour. |
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| Keywords: | NO2--N NO3--N water sample flow injection analysis |
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