| 广州市降水化学特征及变化趋势分析 |
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| 引用本文： | 叶书栋,刘剑筠,吴仁海.广州市降水化学特征及变化趋势分析[J].中山大学学报(自然科学版),2008(Z1). |
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| 作者姓名： | 叶书栋 刘剑筠 吴仁海 |
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| 作者单位： | 广东省环境技术中心;暨南大学资产与实验室管理处;中山大学环境科学研究所; |
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| 摘 要： | 对1991-2000年广州市降水化学成分特征、降水酸度、主要酸性污染气体浓度及各自的变化趋势进行分析,结果表明广州市降水酸化明显,但有逐步好转的迹象。降水化学成分中SO_4~(2-)对酸化仍起主要作用,但其作用略呈下降趋势,同时NO_3~-对降水的酸化作用呈上升趋势;Ca~(2+)、NH_4~+在中和降水的酸性方面仍起十分重要的作用,且两者的作用基本上保持稳定。大气中主要酸性气体的浓度对降水的酸度和酸雨频率有很大的影响,呈正相关的关系。
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| 关 键 词： | 酸性降水 化学成分 广州 |
Analysis on the Chenmical Characteristics and Variation Tendency of Precipitation in Guangzhou City |
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| YE Shu-dong,LIU Jian-jun,WU Ren-hai.Analysis on the Chenmical Characteristics and Variation Tendency of Precipitation in Guangzhou City[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2008(Z1). |
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| Authors: | YE Shu-dong LIU Jian-jun WU Ren-hai |
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| Institution: | YE Shu-dong~1,LIU Jian-jun~2,WU Ren-hai~3 (1.Guangdong Environmental Technology Central,Guangzhou 510230,China,2.Assets , Laboratory Management,Jinan University,Guangzhou 510632,3.Institute of Environmental Science,Sun Yat-sen University,Guangzhou 510275,China) |
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| Abstract: | Chemica composition characteristics,acidity,concentration of major acidic air pollutants and the variation tendency were analyzed for precipitation of 1991-2000 in Guangzhou city.It turns out that acidification of precipitation is obvious and presents moderate gradually.As a chemical composition,SO_4~(2-)is the major factor in influencing the acidity of precipitation greatly,but with a reducing influence.In addition,the influence on precipitation from NO_3~-is increasing.Ca~(2+)and NH_4~+play an important p... |
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| Keywords: | acid precipitation chemical composition Guangzhou |
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