气相分子吸收光谱法测定土壤中氨氮、硝酸盐氮、亚硝酸盐的研究
Study on the Determination of Ammonia Nitrogen,Nitrate Nitrogen,and Nitrite in Soil by Gas-phase Molecular Absorption Spectroscopy
朱锦华1
作者信息
- 1. 广东省绿色产品认证检测中心有限公司,广东 广州 510000
- 折叠
摘要
分子吸收光谱的原理,通过测量样品中特定波长下的光谱吸收情况,从而确定样品中硝酸盐氮、氨氮和亚硝酸盐氮的含量,结果表明,硝酸盐氮、氨氮和亚硝酸盐氮质量浓度在 0.10～4.0 mg/L之间具有很好的线性关系,检出限分别为 0.18、0.05、0.10 mg/kg,回收率为88.6%～101%;方法重复性良好,可用于土壤中氨氮、硝酸盐氮、亚硝酸盐氮的快速测定.
Abstract
The principle of molecular absorption spectroscopy is to determine the content of nitrate nitrogen,ammonia nitrogen,and nitrite nitrogen in the sample by measuring the spectral absorption at a specific wavelength.The results show that there is a good linear relationship between nitrate nitrogen,ammonia nitrogen,and nitrite nitrogen between 0.10 and 4.0 mg/L,with detection limits of 0.18 mg/kg,0.05 mg/kg,0.10 mg/kg,and recovery rates between 88.6%and 101%,respectively.The method has good repeatability and can be used for rapid determination of ammonia nitrogen,nitrate nitrogen,and nitrite nitrogen in soil.
关键词
气相分子吸收光谱仪/土壤/硝酸盐氮/氨氮/亚硝酸盐氮Key words
gas phase molecular absorption spectrometer/soil/nitrate nitrogen/ammonia nitrogen/nitrite nitrogen引用本文复制引用
出版年
2024
NETL
NSTL
万方数据