On-Line Determination of Single Particle Size and Density inthe 5 - 100 nm Diameter Range

Information

• NSF Award
• 9061198

Owner

• AEROSOL DYNAMICS INC.

• Award Id

  9061198

• Award Effective Date

  1/1/1991 - 33 years ago

• Award Expiration Date

  9/30/1991 - 32 years ago

• Award Amount

  $ 49,852.00

• Award Instrument

  Standard Grant

It is proposed a diagnostic method for the on-line, semi- continuous determination of the size and density of individual particles in the 5 nm to 100 nm size range. This is accomplished through a double size spectrometry system. Particles are first sized by their Stokes diameter, and then sized by their aerodynamic diameter. The Stokes diameter sizing gives the geometric diameter of the particle for round particles. The aerodynamic sizing is dependent on particle density as well as Stokes diameter. The result is a distribution of particle densities at each selected Stokes diameter. The Stokes sizing is done by an electrical mobility separation, the aerodynamic sizing is done using a single-stage hypersonic impactor. Since particles are singly charged, the rate of particle capture in can be measured on-line using an electrometer. The system is effective over the 5 to 100 nm diameter range.

• Program Officer

  Ritchie B. Coryell

• Min Amd Letter Date

  12/28/1990 - 33 years ago

• Max Amd Letter Date

  12/28/1990 - 33 years ago

• ARRA Amount

• Name

  Aerosol Dynamics

• City

  Berkeley

• State

  CA

• Country

  United States

• Address

  2329 Fourth Street

• Postal Code

  947102401

• Phone Number

  4156499360

• First Name

  Susanne

• Last Name

  Hering

• Email Address

  Susanne@AerosolDynamics.com

• Start Date

  1/1/1991 12:00:00 AM

• Name

  Engineering-Chemical

• Code

  53

• Name

  Engineering-Mechanical

• Code

  56