| Main Title |
Investigation of particulate matter monitoring using contact electricity : final report / |
| Author |
John, Walter. ;
Reischl, Georg ;
Devor, William ;
Wesolowski, Jerome J.
|
| Other Authors |
|
| CORP Author |
California State Dept. of Health, Berkeley. Air and Industrial Hygiene Lab.;Environmental Sciences Research Lab., Research Triangle Park, NC. |
| Publisher |
U.S. Environmental Protection Agency, Environmental Sciences Research Laboratory, Office of Research and Development, |
| Year Published |
1978 |
| Report Number |
EPA-600/2-78-212; PB289565 |
| Stock Number |
PB-289 565 |
| OCLC Number |
52543849 |
| Additional Subjects |
Aerosols ;
Surfaces ;
Air pollution ;
Monitors ;
Electric charge ;
Continuous sampling ;
Impact ;
Air pollution detection ;
Contact electricity
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 600-2-78-212 |
|
Headquarters Library/Washington,DC |
10/31/2016 |
| EKBD |
EPA-600/2-78-212 |
|
Research Triangle Park Library/RTP, NC |
07/04/2003 |
| ELBD ARCHIVE |
EPA 600-2-78-212 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD RPS |
EPA 600-2-78-212 |
repository copy |
AWBERC Library/Cincinnati,OH |
10/17/2014 |
| ESAD |
EPA 600-2-78-212 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-289 565 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
ix, 70 pages : illustrations ; 28 cm. |
| Abstract |
To better understand the contact electrification monitor for particulate matter, charge transfer by aerosol particles impacting on metal surfaces has been investigated. Monodisperse, uniformly charged or neutral aerosol particles (1-5 micrometer diameter) from a vibrating orifice or fluidized bed generator were bounced on a metal probe. The transfer of precharge from the particles were found to be sensitive indicators of the probe surface condition. A surface preparation procedure was developed which yielded linear charge transfer curves. Measurements were made of methylene blue, potassium biphthalate, sodium chloride and aluminum particles impacting on stainless steel, Inconel, titanium and platinum probes. For insulating materials, the transfer of precharge was independent of particle size while the contact charge was proportional to the cube of particle diameter and directly proportional to impact velocity. The magnitude of the contact charge was strongly dependent on the electrical resistivity of the material. A theoretical model was found to account semi-quantitatively for all aspects of the data. A major remaining difficulty is the lack of knowledge of the contact potential. The implications of these findings for monitoring applications is discussed in detail and the advantages and disadvantages of the monitor are assessed. |
| Notes |
Project Officer: John Nader. California Department of Health Services, Air and Industrial Hygiene Laboratory Section "October 1978." Includes bibliographical references. "EPA-600/2-78-212." |
| Place Published |
Research Triangle Park, N.C. |
| Supplementary Notes |
See also report dated Feb 75, PB-245 055. |
| Access Notes |
Also available via World Wide Web. |
| Corporate Au Added Ent |
United States. Environmental Protection Agency.; United States. Environmental Protection Agency. Office of Research and Development.; Environmental Sciences Research Laboratory.; California. Air and Industrial Hygiene Laboratory.; California. Department of Health Services. |
| Title Ser Add Ent |
Research reporting series. Environmental health effects research series ; EPA-600/2-78-212. |
| PUB Date Free Form |
1978 |
| Series Title Untraced |
Environmental protection technology series ; EPA-600/2-78-212 |
| NTIS Prices |
PC A05/MF A01 |
| BIB Level |
m |
| Medium |
unmediated |
| Content |
text |
| Carrier |
volume |
| Cataloging Source |
OCLC/T |
| OCLC Time Stamp |
20140905110410 |
| Language |
eng |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
01918cam 2200421Ka 45020 |
