离子色谱法测定无组织废气中溴化氢浓度

探讨无组织废气中溴化氢的测定方法。采样方法参照环境空气中氯化氢的采样方法,用淋洗液做吸收液,用大型气泡吸收管作收集器,点位设置按照《大气污染物综合排放标准(》GB16297-1996)附录C给出的无组织排放监控点设置方法进行;分析方法使用离子色谱法测定,分离度较高,相对标准偏差为1.7%～1.9%,加标回收率为93.8%～97.6%,溴离子的检测限为0.02μg/ml,当采样体积为60 L时,无组织废气中溴化氢的检出限为0.003 mg/m3。

Determination of Hydrogen Bromide Concentration in Unorganized Waste Gas by Ions Chromatography

This paper discussed testing methods of hydrogen bromide in unorganized waste gas.With reference to the sampling method of testing hydrogen chloride in ambient air,eluent was adopted as the absorption solution with large bubble absorption tube as collector.The sampling point is selected in accordance with the rules specified in appendix C of Integrated Emission Standard of Air Pollutants（GB16297-1996）.Using ion chromatography and high separation degree,the relative standard deviation is 1.7%~1.9%,recovery rate is 93.8%~97.6%,bromine ion detection limit is 0.02μg/ml.When the sample size is 60L,The detection limit of hydrogen bromide in unorganized waste gas is 0.003 mg/m3.