Record Display for the EPA National Library Catalog

RECORD NUMBER: 454 OF 833

OLS Field Name OLS Field Data
Main Title Investigation of particulate matter monitoring using contact electrification /
Author John, Walter,
CORP Author California State Coll., Stanislaus, Turlock.;National Environmental Research Center, Research Triangle Park, N.C. Chemistry and Physics Lab.
Publisher The Office ; For sale through the National Technical Information Service,
Year Published 1975
Report Number EPA/650-2-75-043; EPA-802726; EPA-ROAP-26AAM
Stock Number PB-245 055
OCLC Number 04599157
Subjects Aerosols. ; Electrostatics. ; Dust--Electric properties. ; Dust--Measurement.
Additional Subjects Monitors ; Particles ; Air pollution detection ; Aerosols ; Electrostatic charge ; Gas sampling ; Surfaces ; Contact electricity
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101YQKQ.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJAD  EPA 650/2-75-043 Region 3 Library/Philadelphia, PA 05/10/1996
EJBD ARCHIVE EPA 650-2-75-043 Headquarters Library/Washington,DC 09/09/2013
EJBD  EPA 650-2-75-043 Headquarters Library/Washington,DC 10/02/2014
EKAM  TD172.E46 1975 no.43 Region 4 Library/Atlanta,GA 01/17/1997
ELBD RPS EPA 650-2-74-043 repository copy AWBERC Library/Cincinnati,OH 07/31/2017
NTIS  PB-245 055 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation vii, 46 pages : illustrations ; 27 cm.
Abstract
The theory of the charging of aerosol particles by contact electricity is reviewed, as well as the development of monitors for particulate matter based on this principle. Data on the performance of these monitors is scarce and sometimes contradictory. In the present work, laboratory tests were carried out with a variety of test dusts. The results show that the dynamic response of the contact electricity monitor tracks well with that of an optical detector. The total charge correlates well with the gravimetric mass. Humidity or precharge on the particles did not influence the detector. Some evidence was obtained showing that particle size does not have an important effect on the response, although there is a cutoff for very small particles. Results for the sensitivity of the instrument can be grouped according to electrical resistivity of the material. It is found that the condition of the surface of the Inconel probe has a major effect on the sensitivity. Additional work is necessary on this aspect of the detector. The Theory of Cheng and Soo for the charging of metal particles is discussed.
Notes
"EPA/650-2-75-043." "February 1975." Grant no. R-802726-01. Research sponsored by the California State College, Stanislaus, College Foundation. Includes bibliographical references (pages 38-40).