Measurement of aerosol sulfuric acid 1. Experimental setup, characterization, and calibration of a novel mass spectrometric system

被引:6
作者
Curtius, J [1 ]
Arnold, F [1 ]
机构
[1] Max Planck Inst Nucl Phys, Atmospher Phys Div, D-69029 Heidelberg, Germany
关键词
D O I
10.1029/2001JD000604
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
An instrument for the direct in situ measurement of aerosol sulfuric acid in the atmosphere has been developed, characterized and calibrated. The instrument termed Volatile Aerosol Component Analyzer (VACA) utilizes chemical ionization mass spectrometry technique for the detection of sulfuric acid. Prior to the mass spectrometric identification the sample flow is heated, and sulfuric acid is evaporated from the aerosol. The VACA system is characterized as a function of temperature, residence time in the flow reactor, aerosol size, and chemical composition. A unit consisting of an aerosol generator, a differential mobility analyzer, a hygrometer, and a condensation nuclei counter is used to calibrate the VACA instrument.
引用
收藏
页码:31965 / 31974
页数:10
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