水体中氨氮的固相显色—反射光谱测定

Determination of NH_3-N in waters by solid phase coloration-reflectance spectroscopy

报道一种环境水体中氨氮测定方法.采用奈斯勒试剂处理的分子筛吸收环境水体中的氨氮,形成NH2Hg2IO固相显色体,反射光谱法直接测定.探讨了该方法的基本原理、影响因素及测定条件.该方法快速、简便.线性范围1~8μg.mL-1,检测限达0.1μg.mL-1,用于地表水和污水的检测,结果满意.

A new method for the determination of NH3-N by reflectance spectrometry was developed.The method was based on the reaction of NH3 with Nessler s reagent treated by molecular sieve,and the reflectance value F(R),which is directly proportional to the amount of NH2Hg2IO in solid phase,was measured by the reflection spectrometer.The determination principle,effect factors and experimental conditions of the method were discussed.The proposed method is fast and simple.The linear range of the determination was 1~8 ...