NDLI: A multifunctional HTDMA system with a robust temperature control

Content Provider	Springer Nature Link
Author	Ye, Xingnan Chen, Tianyi Hu, Dawei Yang, Xin Chen, Jianmin Zhang, Renyi Khakuziv, Alexei F. Wang, Lin
Copyright Year	2009
Abstract	The hygroscopicity of atmospheric aerosols significantly influences their size distribution, cloud condensation nuclei ability, atmospheric residence time, and climate forcing. In order to investigate the hygroscopic behavior of aerosol particles and serious haze in China, a Hygroscopic Tandem Differential Mobility Analyzers (HTDMA) system was designed and constructed at Fudan University. It can function as a scanning mobility particle sizing system to measure particle size distribution in the range of 20–1000 nm in diameter, as well as a hygroscopicity analyzer for aerosol particles with diameters between 20–400 nm in the range of 20%–90% RH (relative humidity). It can also measure the effect of uptake of inorganic acids or semi-VOCs on the hygroscopic behavior of aerosols, such as typical inorganic salts in atmospheric dust or their mixtures. The performance tests show that the system measured particle size of the standard polystyrene latex spheres (PSLs) is 197 nm, which is in excellent agreement with the certified diameter D=199±6 nm, as well as a standard deviation of the repeated runs SD=8.9×10−4. In addition, the measured hygroscopic growth factors of the model compounds, (NH4)2SO4 and NaNO3, agree with the Köhler theoretical curves. The results indicate that the HTDMA system is an excellent and powerful tool for studying the hygroscopic behavior of submicron aerosols and meets the demand required for laboratory research and fieldwork on atmospheric aerosols in China.
Starting Page	1235
Ending Page	1240
Page Count	6
File Format	PDF
ISSN	02561530
Journal	Advances in Atmospheric Sciences
Volume Number	26
Issue Number	6
e-ISSN	18619533
Language	English
Publisher	SP Science Press
Publisher Date	2009-11-14
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	HTDMA hygroscopic behavior atmospheric aerosols set up evaluation Geophysics/Geodesy Meteorology/Climatology
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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