北京大气气溶胶部分无机组分及相关气体的浓度变化

Concentrations of Aerosol and Related Gases in Beijing

利用SJAC MOBIC在 2 0 0 0 0 5～ 2 0 0 0 0 9的 3个采样时段测量了北京大气中的气溶胶SO4 2 - 、NO3- 、NO2 - 、Cl- 及相关气体组分 ,得出了这些污染组分的逐时变化 .结果表明气溶胶Cl- 、NO2 - 、NO3- 及气体HCl、HNO2 和HNO3有明显的变化规律 ,SO2 和气溶胶SO4 2 - 的变化取决于SO2 的排放 ,SO4 2 - 的峰值一般比SO2 的峰值晚

The measurement was made in 3 periods from May to September of 2000 in Beijing. The measurement species included SO 4 2- , NO 3 -, NO 2 -, Cl - of aerosol and related gases. The hourly variation of the concentration was presented. It showed that NO 3 -, NO 2 -, Cl - of aerosol and HCl, HNO 2, HNO 3 of gas varied with regularity . The variation of gas SO 2 and aerosol SO 4 2- depended on the emission of SO 2. The peak time of SO 4 2- was about 2 hours later than SO 2.