GRADIENT DISTRIBUTION OF ACID RAIN IN THE SCENIC RESORTOF THE BAIYUN MOUNTAIN IN GUANGZHOU

编号 zgly0000333560

文献类型 期刊论文

文献题名 GRADIENT DISTRIBUTION OF ACID RAIN IN THE SCENIC RESORTOF THE BAIYUN MOUNTAIN IN GUANGZHOU

作者 黄健  李福娇  江奕光  李琼 

作者单位 GuangzhouInstituteofTropicalandMarineMeteorology 

母体文献 Journal of Tropical Meteorology（热带气象学报：英文版） 

年卷期 2004,10(1)

页码 95-105

年份 2004 

分类号 X517 

关键词 酸雨  化学成分  白云山  广州 

文摘内容 This paper analyzes the samples of rainwater from January to October 1999 at three monitoring sites of Baiyun Mountain and of aerosol composition in near-surface layer in January and June 1999 at two sites.The results suggest that (1) The pH value of rainwater is between 3.13 and 7.18, and the frequency of acid rain is more than 58%. With the ascent of the monitoring sites, the pH value of rainwater decreases, and the frequencyof acid rain increases. (2) In January, the chemical aerosol compositions at different altitudes are similar, but in June the acidity of aerosol rises at the higher site because of the increase of SO4^2-. (3) In rainwater, the proportion is such that SO4^2-is the most significant anion and Ca^2+ is the most important cation, but both of them decrease as the altitude ascends. The proportion of NO3^- and NH4^+ rise at the higher site and have more contribution to the acidity of rainwater. (4) As the impact of automobile emissions around Baiyun Mountain, the proportion of NO3^-/SO4^2-molecular concentration reaches 0.40, and NO3^- is relatively more important to the rain acidity at the higher site。