Mateu J., Forteza R., Cerdà V., Colom-Altés M.
AEST, Departament de Química, Universitat de les Illes Balears, E-07071, Palma de Mallorca, Spain.
Anal Bioanal Chem. 1995 Sep;353(2):197-202. doi: 10.1007/s0021653530197.
Atmospheric aerosols collected by means of a cascade impaction system at the campus of the University of the Balearic Islands (Majorca, Spain) from November 1993 to February 1994 were analysed for chloride, nitrate, sulphate, ammonium, calcium, magnesium, sodium and potassium. Based on particle size distribution, the species studied were classified into three groups: (a) concentration decrease with particle size (sulphate and ammonium), (b) concentration increase with particle size (chloride, calcium, magnesium and sodium), and ( c) independent of particle size (nitrate and potassium). A principal component analysis (PCA) revealed a clear relationship between particle size and analyte origin. Also, the origin of sulphate and potassium fine and coarse particles was found to be different.
1993年11月至1994年2月期间，在西班牙马略卡岛巴利阿里群岛大学的校园内，通过级联冲击系统收集的大气气溶胶，对其中的氯化物、硝酸盐、硫酸盐、铵、钙、镁、钠和钾进行了分析。根据粒径分布，所研究的物质分为三组：(a) 浓度随粒径减小（硫酸盐和铵），(b) 浓度随粒径增大（氯化物、钙、镁和钠），以及 (c) 与粒径无关（硝酸盐和钾）。主成分分析（PCA）揭示了粒径与分析物来源之间的明确关系。此外，还发现硫酸盐和钾细颗粒与粗颗粒的来源不同。
