【摘要】 对广州地区降水酸度、酸雨频率的年际变化进行了研究,发现近十几年来广州地区的酸雨污染有所减缓,但2001-2003年有恶化的趋势。为探究原因,追溯主要酸雨污染物来源,并对各酸雨污染物进行综合评价,结论表明,广州地区的大气环境已从过去的以SO2为主的煤烟型污染转变为以NOX为主的氧化型污染。还讨论了广州地区气象条件对酸雨形成的影响。更多还原

【Abstract】 Annual changes of acidity in precipitation, acid raining frequencies in Guangzhou area has been monitored. It is found that the acid rain pollution in Guangzhou area in recent ten years has been abated to some extent. However, pH value in the precipitation in 2001 and 2002 was determined to be about 4.5. The site investigations show that the type of air pollution in Guangzhou area has changed from SO_ 2 derived from coal-smoke discharge to NO_ Xdue to the increases of automobiles.更多还原