Mass Transfer Rates of Polycyclic Aromatic Hydrocarbons Et-Weenm Icron- Size Particles and Their Environment- Theoretical Estimates

By Scholander, P.

Book Id: WPLBN0000213297
Format Type: PDF eBook
File Size: 0.7 MB
Reproduction Date: 2005

Title:	Mass Transfer Rates of Polycyclic Aromatic Hydrocarbons Et-Weenm Icron- Size Particles and Their Environment- Theoretical Estimates
Author:	Scholander, P.
Volume:
Language:	English
Subject:	Government publications, United Nations., United Nations. Office for Disarmament Affairs
Collections:	Government Library Collection, Disarmament Documents
Historic Publication Date:
Publisher:	United Nations- Office for Disarmament Affairs (Unoda)


Citation APA MLA Chicago Scholander, P. (n.d.). Mass Transfer Rates of Polycyclic Aromatic Hydrocarbons Et-Weenm Icron- Size Particles and Their Environment- Theoretical Estimates. Retrieved from http://www.gutenberg.us/

Description
Government Reference Publication

Excerpt
Introduction: Particle association is an important characteristic of polycyclic aromatic hydrocarbons (PAHs) both in relation to their behavior in the ambient air and in relation to their suspected role as initiators of lung cancer in man. Before inhalation in the ambient air, this association or adsorption of PAHs can be characterized as a solid-gas equilibrium, and after t h e deposition of particles and PAHs in the lung it can be described as a solid-liquid equilibrium. Crude estimates for these equilibria can be obtained from the literature. In the ambient air, a dominant fraction of the heavier PAHs is bound to particles (1,2), and, when these particles have been deposited in the lung, almost all adsorbed hydrocarbons will be released to the surrounding media (3-5). In contrast to these equilibria, very little is known about the rate of those mass transfer processes that lead to these equilibria. This should be of vital importance to the understanding of the subsequent biological action of these substances.