An Instrument for Measuring the Liquid Water Content of Aerosols
Open Access
- 1 January 1997
- journal article
- research article
- Published by Taylor & Francis in Aerosol Science and Technology
- Vol. 27 (1) , 50-61
- https://doi.org/10.1080/02786829708965457
Abstract
An instrument for measuring the liquid water content of aerosols is described. Aerosol samples are collected on PTFE membrane filters and then are placed in a closed chamber in which the relative humidity can be controlled over a range from 5 to 95%. A β-gauge measures the changing aerosol mass from a low humidity through a range of increasing humidities and then through a range of decreasing humidities. The instrument corrects for changes in air density in the β-gauge. A method for correcting electronic drift is described. A comparison of liquid water mass measurements of a test aerosol with gravimetric mass measurements gave a regression slope of 0.98 and a standard deviation of 0.7μg/m3. Examples of analyses on a generated aerosol and a fine fraction atmospheric sample are given.Keywords
This publication has 20 references indexed in Scilit:
- An improved method for measuring aerosol strong acidity: Results from a nine-month study in St Louis, Missouri and Kingston, TennesseePublished by Elsevier ,2003
- Organics alter hygroscopic behavior of atmospheric particlesJournal of Geophysical Research: Atmospheres, 1995
- Mixing characteristics and water content of submicron aerosols measured in Los Angeles and at the grand canyonAtmospheric Environment. Part A. General Topics, 1993
- Notes. Precision and accuracy of a .beta. gauge for aerosol mass determinationsEnvironmental Science & Technology, 1982
- Relative humidity and temperature dependence of the ammonium nitrate dissociation constantAtmospheric Environment (1967), 1982
- A .beta.-gage method applied to aerosol samplesEnvironmental Science & Technology, 1981
- A Cyclone for Size-Selective Sampling of Ambient AirJournal of the Air Pollution Control Association, 1980
- Atmospheric particulate mass measurement with beta attenuation mass monitorEnvironmental Science & Technology, 1976
- Atmospheric particulate mass monitoring with a β radiation detectorAtmospheric Environment (1967), 1974
- Monitoring of Atmospheric Aerosol Parameters with the Integrating NephelometerJournal of the Air Pollution Control Association, 1969