Record Display for the EPA National Library Catalog

RECORD NUMBER: 23 OF 411

OLS Field Name OLS Field Data
Main Title Air Particulates No. 1 Study Number 22.
Author Ferguso, James S. ; Cop, Ronald T. ; McFarre, Earl F. ;
CORP Author Public Health Service, Cincinnati, Ohio. Div. of Air Pollution.
Year Published 1965
Report Number PHSP-999-AP-22;
Stock Number PB-170 701
Additional Subjects ( Air pollution ; Particles) ; ( Particles ; Visual inspection) ; Atmosphere ; Dust ; Microscopes ; Identification ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-170 701 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 85p
Abstract
In the study, 35 participants each analyzed 10 slides of selected air particulates permanently mounted in a solid plasticizer. Slides 1 through 7 contained a single particulate, while slides 8 and 9 contained three each, and slide 10 contained 9 particulates. Of 770 possible correct identifications that could be made by the 35 participants analyzing the 10 slides, 247 correct identifications were made. Among the participants identifying these particulates, those using a polarizing microscope and a range of magnifications did better than those not doing so. Whereas most of the participants did reasonably well in estimating the size of the particulate on slide number 2, most did very poorly in estimating the percent by weight of each component on slides 8, 9, and 10. Although no text or standard method on identification of atmospheric particulates exists, the overall results of the study were very good. (Author)