气相分子吸收光谱法测定工业废气中氨含量

Determination of ammonia in industrial waste gas by GPMAS

本文建立了气相分子吸收光谱法检测工业废气中NH3含量的方法。实验结果表明,在线性范围内,线性相关系数良好,精密度、准确度均可以满足环境监测分析的要求。该方法灵敏度高、重复性好,不需要进行样品前处理,不需要使用剧毒的化学试剂。与传统的国家标准方法比较,该方法测定结果没有显著性差异,能够准确检测工业废气中NH3的含量,是一种值得推广应用的分析方法。

A gas-phase molecular absorption spectrometry method for the detection of ammonia in industrial waste gas is established in this paper.The experimental results show that in the linear range,the linear correlation coefficient is good,and the precision and accuracy can meet the requirements of environmental monitoring analysis.The method has high sensitivity and good repeatability,does not require sample pretreatment and toxic chemical reagents.Compared with the traditional national standard methods,the result has no significant difference.And it can accurately detect the ammonia in industrial waste gas.It is an analytical method worthy of popularization and application.