Gentilizza M, Vadjić V
Institute for Medical Research and Occupational Health, Zagreb, Yugoslavia.
Sci Total Environ. 1987 Oct;66:225-34. doi: 10.1016/0048-9697(87)90090-8.
The size distribution of particles as a function of sulphate, ammonium and total suspended particulates was investigated in the air of two urban and one industrial area in winter and in summer. An Andersen cascade impactor was used for sampling. Regardless of the character of the area and irrespective of season the size weight distributions of sulphate and ammonium-containing particles were comparable in all separation stages. A relatively high value of equivalent ammonium ion/sulphate ion ratio for separation stages IV and V for the urban areas as well as a good correlation between sulphate and ammonium ion concentrations were determined. The results support the assumption of ammonium ion being a dominant cation which binds to sulphates in urban atmospheres.
在冬季和夏季，对两个城市地区和一个工业区空气中颗粒的大小分布与硫酸盐、铵以及总悬浮颗粒物之间的关系进行了研究。使用安德森级联冲击器进行采样。无论区域特征如何，也无论季节怎样，在所有分离阶段，含硫酸盐和铵的颗粒的大小重量分布都是可比的。确定了城市地区IV和V分离阶段相当高的等效铵离子/硫酸根离子比率值，以及硫酸盐和铵离子浓度之间的良好相关性。结果支持了铵离子是城市大气中与硫酸盐结合的主要阳离子这一假设。
