兰州市冬季大气气溶胶中水溶性离子浓度研究

摘要

研究了兰州市1990年和2010年冬季在同一地点采集的大气气溶胶样品,使用离子色谱法对其中8种水溶性无机阴离子和6种阳离子进行了分析.结果发现,20年来由于工业和能源结构的改变以及机动车数量的急剧增加,气溶胶中主要水溶性离子的构成比例和排序正在发生明显变化；应注重其水溶性离子对人体的危害和影响.%We studied Lanzhou's atmospheric aerosol samples in winters between 1990 and 2010. The samples collected at the same location were analyzed on eight kinds of water-soluble inorganic anions and cations by using the ion chromatography. Due to the alteration of energy and industrial structures in Lanzhou and the rapid increase in the amount of vehicles, the main composition ratio and order of water-soluble ions in atmospheric aerosols and changed greatly in the past seven years. Great attention should be paid on the dangerons effect of water-soluble ions on humans.