Study on the Determination of Ammonia Nitrogen,Nitrate Nitrogen,and Nitrite in Soil by Gas-phase Molecular Absorption Spectroscopy
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.
gas phase molecular absorption spectrometersoilnitrate nitrogenammonia nitrogennitrite nitrogen
NETL
NSTL
万方数据
