南通市酸雨时空分布特征及其对人体健康的影响分析

Spatial and Temporal Distribution Characteristics of Acid Rain in Nantong and its Impact on Human Health

利用2009-2012年南通市市区、如皋和吕泗3个酸雨监测站的酸雨资料和降水资料,分析了南通市酸雨的时空分布特征及其对人体建康的影响。结果表明:酸雨和强酸雨的发生天数在南通市呈现自北向南、自西向东逐渐增加的趋势,酸雨年平均pH值呈现自北向南、自西向东逐渐减小的趋势。酸雨的发生百分率、平均pH值及天数都具有明显的年际变化规律和月际分布特征。气象条件是酸性物颗粒扩散形成酸雨的最重要的影响因子。酸雨对人体的呼吸系统具有直接的危害,同时使饮用水源污染以及有毒重金属溶出,可引起机体呼吸系统、心脏及血液系统、免疫系统和内分泌系统等的广泛损伤。

Based on the acid rain data and precipitation data of three acid rain monitoring stations in Nantong City,Rugao and Lvsi from 2009 to 2012,this paper analyzes the spatial and temporal distribution characteristics of acid rain in Nantong City and its impact on human health.The results show that the days of acid rain and strong acid rain increase from north to South and from west to East in Nantong City,and the annual average pH value of acid rain decreases from north to South and from west to East.The percentage of acid rain,the average pH value and the days of acid rain have obvious inter annual variation and inter monthly distribution characteristics.Meteorological conditions are the most important factors for the diffusion of acid particles to form acid rain.Acid rain has direct harm to respiratory system of human body,and it also causes pollution of drinking water source and dissolution of toxic heavy metals,which can cause extensive damage to respiratory system,heart and blood system,immune system and endocrine system of human body.