Abstract: The measurement was made in July and November 2000 in Guangzhou. The measurement species included SO₄^2-，NO₃^-，NO₂^-，Cl^- of aerosol and related gases. The hourly variation of the concentration was presented. It showed that NO₃^-，NO₂^-，Cl^- of aerosol and HCl, HNO₂，HNO₃ of gas varied with regularity. The variation of gas SO₂ and aerosol SO₄^2- depended on the emission of SO₂. The ratio of Sa/St was much higher in November than July.

Key words: aerosol, sulfate, sulfur dioxide, nitrate, nitrite, nitric acid, nitrous acid

摘要： 利用SJAC-MOBIC在2000年7月和11月两个采样时段测量了广州大气中的气溶胶SO^2-₄，NO^-₃，NO^-₂，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^-，NO^-₂，NO^-₃及气体HCl，HNO₂，HNO₃有明显的变化规律，SO₂和SO^2-₄的变化取决于SO₂的排放，11月的Sa/St明显高于7月。

关键词: 气溶胶, 硫酸盐, 二氧化硫, 硝酸盐, 亚硝酸盐, 硝酸, 亚硝酸