氯化氢气体对环境有危害，可造成水体污染，大部分由城市生活垃圾、医疗废弃物等焚烧产生。针对硝酸银容量法、硫氰酸汞分光光度法和离子色谱法监测气态污染源中氯化氢的局限，提出多次反射池傅里叶变换红外（FTIR）光谱法检测氯化氢气体浓度。该方法是在准确测量氯化氢气体红外吸收光谱的基础上，使用非线性最小二乘算法进行光谱定量分析，从而得到氯化氢气体含量。通过在实验室条件下测量的氯化氢气体浓度结果看，该方法可作为氯化氢气体定量分析的有效方法。

The hydrogen chloride is harmful to the environment and causes water pollution.It is mostly produced by the incineration of urban living garbage,medical waste and so on. According to the limitations of volumertric method for nitric acid silver,thiocyanate mercury spectrophotometry and ion chromatography to monitor the hydrogen chloride gas, multiple reflecton cell Fourier transform infrared spectrophotomery method is presented to detect the hydrogen chloride gas concentration. Based on accurately measuring the infrared absorption spectrum of the hydrogen chloride gas, spectrum is quantitatively analysised by using nonlinear least square algorithm in order to get the hydrogen chloride gas concentration. With the concentration results under laboratory conditions,this mehod is also effective way to quantitatively analyse the hydrogen chloride gas.