| 碱性过硫酸钾氧化-气相分子吸收光谱法测定水中总氮 |
| |
| 引用本文： | 莫怡玉,茅丽秋,吴卓智.碱性过硫酸钾氧化-气相分子吸收光谱法测定水中总氮[J].环境监测管理与技术,2010,22(4):47-49. |
| |
| 作者姓名： | 莫怡玉 茅丽秋 吴卓智 |
| |
| 作者单位： | 1. 湛江市海洋与渔业环境监测站,广东,湛江,524039
2. 湛江市港务管理局环境监测站,广东,湛江,524027 |
| |
| 摘 要： | 采用碱性过硫酸钾氧化-气相分子吸收光谱法测定水中总氮,用螺纹盖聚四氟乙烯消化管代替比色管,称重法校正体积,加大NaOH用量,讨论了干扰及消除办法。方法在0μg~20.0μg范围内线性良好,检出限为0.016 mg/L,标准溶液平行测定的RSD≤1.5%,实际水样加标回收率为99.2%~102%,测量结果的扩展不确定度为3.3%。
|
| 关 键 词： | 总氮 碱性过硫酸钾 气相分子吸收光谱法 水质 |
TotalNitrogen Determ ination inW ater by GasM olecular Absorption Spectrometry with Alkaline Potassium Persulfate Oxidation |
| |
| MO Yi-yu,MAO Li-qiu,WU Zhuo-zhi.TotalNitrogen Determ ination inW ater by GasM olecular Absorption Spectrometry with Alkaline Potassium Persulfate Oxidation[J].The Administration and Technique of Environmental Monitoring,2010,22(4):47-49. |
| |
| Authors: | MO Yi-yu MAO Li-qiu WU Zhuo-zhi |
| |
| Institution: | 1.Zhanjiang Ocean and Fishery Environmental Monitoring Station,Zhanjiang,Guangdong 524039,China;2.Zhanjiang Port Authority Environmental Monitoring Station,Zhanjiang,Guangdong 524027,China) |
| |
| Abstract: | Total nitrogen in water was determined by gas molecular absorption spectrometry with potassium persulfate oxidation.The detection used polyfluortetraethylene digestive tubes with whorl cap instead of colorimeter tubes,volume calibration by weighing method and increased NaOH dosage.The interference and its eliminate measurement were discussed.A good linearity was in range from 0 μg to 20.0 μg.The detection limit was 0.016 mg/L.RSD of parallel standard solution was ≤1.5%.Spiked recoveries of samples were between 99.2% and 102%.Expanded uncertainty of test results was 3.3%. |
| |
| Keywords: | Total nitrogen Alkaline potassium persulfate Gas molecular absorption spectrometry Water quality |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《环境监测管理与技术》浏览原始摘要信息 |
| 点击此处可从《环境监测管理与技术》下载免费的PDF全文 |
|
