Main Title |
Investigation of flow rate calibration procedures associated with the high volume method for determination of suspended particulates / |
Author |
Smith, F. ;
Wohlschlegel, P. S. ;
Rogers, R. S. C. ;
Mulligan, D. J.
|
Other Authors |
|
CORP Author |
Research Triangle Inst., Research Triangle Park, NC. ;North Carolina State Univ. at Raleigh.;Environmental Monitoring and Support Lab., Research Triangle Park, NC. |
Publisher |
Office of Research and Development, U.S. Environmental Protection Agency ; Available from the National Technical Information Service, |
Year Published |
1978 |
Report Number |
EPA 600/4-78-047; EPA-68-02-2277 |
Stock Number |
PB-291 386 |
OCLC Number |
05079057 |
Subjects |
Hydraulics ;
Particle size determination
|
Additional Subjects |
Chemical analysis ;
Sampling ;
Error analysis ;
Samplers ;
Air pollution ;
Design criteria ;
Performance evaluation ;
Calibrating ;
Laboratory equipment ;
Particles ;
Total suspended particulates ;
Air pollution detection ;
Air quality ;
Numerical solution ;
Procedures
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA 600-4-78-047 |
|
Headquarters Library/Washington,DC |
08/13/2013 |
EKBD |
EPA 600/4-78-047 |
|
Research Triangle Park Library/RTP, NC |
04/17/2019 |
ELBD ARCHIVE |
EPA 600/4-78-047 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ESAD |
EPA 600-4-78-047 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
NTIS |
PB-291 386 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
ix, 153 pages : illustrations ; 28 cm. |
Abstract |
Determination of total suspended particulate (TSP) in the ambient air by the high-volume method requires three independent measurements, mass of particulate collected, sampling flow rate, and sampling time. Several potential sources of error in each of the three above measurements have been identified. Implementation of technically sound, standardized flow rate calibration has long been recognized as one of the most effective means of improving the accuracy and precision of TSP data. Procedures for accomplishing this have not been standardized. The purpose of this project was to investigate potential sources of error in the flow rate calibration used in making TSP measurements using the EPA reference method. The first task was a theoretical study of the flow rate calibration and measurement techniques applicable to the high-volume sampler, and secondly to design and carry out an experimental program to assess the validity of the theoretical study concerning temperature and pressure corrections for calibration and use of the high-volume sampler. The indications from this study are that to comply with EPA's requirement that all ambient air quality data be referenced to standard conditions of 298K (25C) and 760 mm Hg and to increase the comparability of TSP data, the flow rate should be based on the flow rate of a standard volume and reported as mass/std volume, e.g., g/SCM. This procedure would require that ambient temperature and barometric pressure at the time of sample collection be known in order to calculate the flow rate based on standard volume. |
Notes |
Prepared for Quality Assurance Branch, Environmental Monitoring and Support Laboratory, Environmental Protection Agency, Research Triangle Park, N.C. Contract No. 68-02-2277; task no. 5. Includes bibliographical references (pages 83-84). |