Hygroscopic growth of ultrafine ammonium sulphate aerosol measured using an ultrafine tandem differential mobility analyzer

被引：121

作者：

Hämeri, K

Väkevä, M

Hansson, HC

Laaksonen, A

机构：

[1] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland

[2] Univ Stockholm, Inst Appl Environm Res, Stockholm, Sweden

[3] Univ Kuopio, Dept Appl Phys, FIN-70211 Kuopio, Finland

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES | 2000年 / 105卷 / D17期

关键词：

D O I：

10.1029/2000JD900220

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

An ultrafine tandem differential mobility analyzer has been developed for measurements of the hygroscopicity of ultrafine aerosol particles, between 8 and 50 nm in mobility diameter. In this paper, the main operation features of the device are presented along with a detailed evaluation for the limits of its operation. The instrument is suitable for both laboratory-generated and atmospheric aerosol measurements. Hygroscopic growth data are presented for ammonium sulphate particles in the ultrafine size range, and comparisons are made with both experimental literature data and with theory. The data include determination of hygroscopic growth curves, deliquescence behavior, and hysteresis. These data will find applications in studies of the formation and growth of atmospheric aerosols.

引用

页码：22231 / 22242

页数：12

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