HYGROSCOPIC GROWTH OF CONSUMER SPRAY PRODUCTS

Citation
Sk. Dua et al., HYGROSCOPIC GROWTH OF CONSUMER SPRAY PRODUCTS, Aerosol science and technology, 23(3), 1995, pp. 331-340
Citations number
11
Categorie Soggetti
Engineering, Mechanical","Environmental Sciences
ISSN journal
02786826
Volume
23
Issue
3
Year of publication
1995
Pages
331 - 340
Database
ISI
SICI code
0278-6826(1995)23:3<331:HGOCSP>2.0.ZU;2-I
Abstract
The hygroscopic growth of particles produced from 12 consumer spray pr oducts was studied to provide the quantitative basis for modeling thei r respiratory deposition. A tandem differential mobility analyzer (TDM A) was used for the measurement of growth of aerosol particles produce d by spray from three disinfectants, four deodorants, four air freshen ers, and a cooking medium. The soluble fractions of the aerosol partic les were measured for each product and from the growth theory, the mol ecular weights of the products were estimated. The size distributions of the spray product aerosols were also measured using a low-pressure impactor. It was observed that some of the spray product aerosol do no t grow at all, while others showed moderate to high growth. The growth ratio ranged from 1 to nearly ? depending on the nature of the produc t and the initial size of the aerosol. The soluble fractions and molec ular weights were in the range 0.01-0.96 and 15-700, respectively. The mass median aerodynamic diameters of the aerosols varied from 2.3 to 8.8 mu m and geometric standard deviations from 2.0 to 3.8.