Rapid formation of sulfuric acid particles at near-atmospheric conditions

被引：140

作者：

Berndt, T

Böge, O

Stratmann, F

Heintzenberg, J

Kulmala, M

机构：

[1] Leibniz Inst Tropospharenforsch eV, D-04318 Leipzig, Germany

[2] Univ Helsinki, FIN-00014 Helsinki, Finland

来源：

SCIENCE | 2005年 / 307卷 / 5710期

关键词：

D O I：

10.1126/science.1104054

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We investigated the formation of new particles in a laboratory study, starting from H2SO4 produced in situ through the reaction of OH radicals with SO.. Newly formed particles were observed for H2SO4 concentrations above 7 x 106 per cubic centimeter. At 293 kelvin, a rough estimate yielded a nucleation rate of 0.3 to 0.4 particles per cubic centimeter per second for similar to10(7) particles per cubic centimeter of H2SO4 (particle size greater than or equal to 3 nanometers). These findings are in agreement with observations from the atmosphere. The results demonstrate that under laboratory conditions similar to the atmosphere, particle formation occurs at atmospheric H2SO4 concentration levels.

引用

页码：698 / 700

页数：3

共 37 条

[1]

[Anonymous], 1978, Microphysics of Clouds and Precipitation, DOI 10.1007/978-94-009-9905-3

[2] KINETICS AND MECHANISMS OF THE GAS-PHASE REACTIONS OF THE HYDROXYL RADICAL WITH ORGANIC-COMPOUNDS UNDER ATMOSPHERIC CONDITIONS [J].