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。
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.
作者
朱锦华
Zhu Jinhua(Guangdong Green Product Certification and Testing Center Co.,Ltd.,Guangzhou Guangdong 510000,China)
出处
《山西化工》
CAS
2024年第9期61-64,共4页
Shanxi Chemical Industry
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
gas phase molecular absorption spectrometer
soil
nitrate nitrogen
ammonia nitrogen
nitrite nitrogen
