Phase transformation and growth of hygroscopic aerosols

PDF Version Also Available for Download.

Description

Ambient aerosols play an important role in many atmospheric processes affecting air quality, visibility degradation, and climatic changes as well. Both natural and anthropogenic sources contribute to the formation of ambient aerosols, which are composed mostly of sulfates, nitrates, and chlorides in either pure or mixed forms. These inorganic salt aerosols are hygroscopic by nature and exhibit the properties of deliquescence and efflorescence in humid air. For pure inorganic salt particles with diameter larger than 0.1 micron, the phase transformation from a solid particle to a saline droplet occurs only when the relative humidity in the surrounding atmosphere reaches a ... continued below

Physical Description

21 pages

Creation Information

Tang, I. N. November 1999.

Context

This book is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this book can be viewed below.

Who

People and organizations associated with either the creation of this book or its content.

Author

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this book. Follow the links below to find similar items on the Digital Library.

Description

Ambient aerosols play an important role in many atmospheric processes affecting air quality, visibility degradation, and climatic changes as well. Both natural and anthropogenic sources contribute to the formation of ambient aerosols, which are composed mostly of sulfates, nitrates, and chlorides in either pure or mixed forms. These inorganic salt aerosols are hygroscopic by nature and exhibit the properties of deliquescence and efflorescence in humid air. For pure inorganic salt particles with diameter larger than 0.1 micron, the phase transformation from a solid particle to a saline droplet occurs only when the relative humidity in the surrounding atmosphere reaches a certain critical level corresponding to the water activity of the saturated solution. The droplet size or mass in equilibrium with relative humidity can be calculated in a straightforward manner from thermodynamic considerations. For aqueous droplets 0.1 micron or smaller, the surface curvature effect on vapor pressure becomes important and the Kelvin equation must be used.

Physical Description

21 pages

Notes

Brookhaven National Laboratory, P.O. Box 5000, Upton, NY 11973-5000

Source

  • Other Information: PBD: 1 Nov 1999

Language

Item Type

Identifier

Unique identifying numbers for this book in the Digital Library or other systems.

  • Report No.: BNL--62295-99/11-REV
  • Report No.: KC030202
  • Grant Number: AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 752145
  • Archival Resource Key: ark:/67531/metadc709876

Collections

This book is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

What responsibilities do I have when using this book?

When

Dates and time periods associated with this book.

Creation Date

  • November 1999

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • Nov. 9, 2015, 1:41 p.m.

Usage Statistics

When was this book last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 9

Interact With This Book

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Tang, I. N. Phase transformation and growth of hygroscopic aerosols, book, November 1999; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc709876/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.