Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Indoor contaminant emission rates characterized by source activity factors.

Authors
Franke-JE; Wadden-RA
Source
Environ Sci Technol 1987 Jan; 21(1):45-51
NIOSHTIC No.
00166174
Abstract
A method for determining indoor contaminant emission rates was described. The method was based on determining individual emission rates from various sources within the environment, known as source activity factors. Air concentrations of condensation nuclei (CN), respirable dust (RP), total dust, nitrogen-dioxide (10102440) (NO2), carbon-monoxide (630080) (CO), carbon-dioxide (124389) (CO2) inside and outside a welding shop, and CN, RP, and CO in ambient air of a lunch room were measured. Welding shop samples were collected during 50 4 hour sampling periods, and the lunch room samples during 16 4 hour periods. CN, RP, and NO2 were selected for emission rate analysis in the welding shop study, and CN and CO2 were measured in the lunchroom study. Observations of emission source activities, such as the number of welders and space heaters in the welding shop, were made for 10 minute intervals. Overall emission rates were calculated with a pollutant mass balance model. Multiple source emission rates were determined using linear regression analysis by comparing overall emission rates to the source activity factors. Experimental and literature values of emission source rates for the welding shop and lunch room were tabulated. Average source emission rates were, generally, consistent with literature values. Experimental and literature values for NO2 emission from heaters in the welding shop were 1.5 and 4.3 milligrams/minute, respectively. Experimental CN and RP emission rates from welding were larger than literature values because they included emissions from painted and galvanized metal bases. The authors conclude that the method can satisfactorily determine source emission rates in the presence of multiple sources and variable conditions for 4 hour sampling intervals.
Keywords
NIOSH-Publication; NIOSH-Grant; Air-quality; Environmental-contamination; Emission-sources; Environmental-factors; Data-processing; Air-samples; Chemical-analysis; Metal-fumes
CODEN
ESTHAG
CAS No.
10102-44-0; 630-08-0; 124-38-9
Publication Date
19870101
Document Type
Journal Article
Funding Amount
7404259
Funding Type
Grant
Fiscal Year
1987
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T15-OH-07104
Issue of Publication
1
ISSN
0013-936X
Priority Area
Control-technology
Source Name
Environmental Science and Technology
State
IL
Performing Organization
Occupational and Environ Med University of Illinois 2035 W Taylor Street Chicago, Ill 60612
TOP