Design and operation of a pressure-controlled inlet for airborne sampling with an aerodynamic aerosol lens

被引：94

作者：

Bahreini, Roya ^{[1
,2
]}

Dunlea, Edward J. ^{[1
]}

Matthew, Brendan M. ^{[1
,2
]}

Simons, Craig ^{[1
,2
]}

Docherty, Kenneth S. ^{[1
]}

DeCarlo, Peter F. ^{[1
,3
]}

Jimenez, Jose L. ^{[1
,4
]}

Brock, Charles A. ^{[2
]}

Middlebrook, Ann M. ^{[2
]}

机构：

[1] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA

[2] Natl Ocean & Atmospher Adm, Earth Syst Res Lab, Boulder, CO USA

[3] Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA

[4] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA

来源：

AEROSOL SCIENCE AND TECHNOLOGY | 2008年 / 42卷 / 06期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

D O I：

10.1080/02786820802178514

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Two pressure-controlled inlets (PCI) have been designed and integrated into the Aerodyne Aerosol Mass Spectrometer (AMS) inlet system containing an aerodynamic aerosol lens system for use in airborne measurements. Laboratory experiments show that size calibration and mass flow rate into the AMS are not affected by changes in upstream pressure (P-0) of the PCI as long as the pressure within the PCI chamber (P-PCI) is controlled to values lower than P-0. Numerous experiments were conducted at different P-PCI, P-0, and AMS lens pressures (P-Lens) to determine particle transmission efficiency into the AMS. Based on the results, optimum operating conditions were selected which allow for constant pressure sampling with close to 100% transmission efficiency of particles in the size range of similar to 100-700 nm vacuum aerodynamic diameter (d(va)) at altitudes up to similar to 6.5 km. Data from an airborne field study are presented for illustration.

引用

页码：465 / 471

页数：7

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