摘要
沿海城市工业迅速发展所造成的酸雾问题已引起了国内外环保部门的高度重视,如美国加州南部沿岸多次出现酸雾的pH值在3.0以下,最低为1.63。青岛地区1983年观测到酸雾pH值为4.22—4.52,而我们在1991年6—7月份的观测表明,pH平均为3.84,最低(娄山化工厂)为1.7,酸度有显著增强的趋势。近几年来青岛市酸雨的pH值平均为4.42,最小为3.48,可以看出,酸雾的酸性远较酸雨为强。因此城市酸雾的研究更为重要和迫切。
Based on the hydrodynamics and chemical thermodynamics of acidic fogs, a two-dimensional physico-chemical numerical model of advection-radiation fog has been developed to investigate the formation and evolution of fog and the acidification process of fog water, and to estimate regional distribution of sulfur dioxide and pH of fog water in Qingdao in summer. Turbulence, advection, radiation, gravitational settling and SO2 (g) transformation are included in the model. The calculated results show good agreements with measured concentrations of fog and pH of fog water, and may be account for the presence of very acid fogs in Qingdao or along the Shandong coast and may be important for the understanding of acid rain.
出处
《海洋科学集刊》
CAS
1995年第1期65-79,共15页
Studia Marina Sinica
