| Main Title |
Photoacoustic detection of particulate carbon / |
| Author |
Patty, R. R. ;
Bennett, Charles A.
|
| Other Authors |
|
| CORP Author |
North Carolina State Univ. at Raleigh.;Environmental Sciences Research Lab., Research Triangle Park, NC. |
| Publisher |
U.S. Environmental Protection Agency, Environmental Sciences Research Laboratory, |
| Year Published |
1981 |
| Report Number |
EPA/600/7-81/129; EPA-R-805332 |
| Stock Number |
PB81-245425 |
| Subjects |
Optoacoustic spectroscopy ;
Air--Pollution--Measurement
|
| Additional Subjects |
Carbon ;
Particles ;
Gas detectors ;
Monitoring ;
Air pollution ;
Filters ;
Performance evaluation ;
Photoacoustic spectroscopy ;
Air pollution detection ;
Numerical solution
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB81-245425 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
52 pages : illustrations ; 28 cm |
| Abstract |
A photoacoustic technique for the mass monitoring of carbonaceous aerosols deposited on filter substrates has been developed. The technique involves the use of a specially designed photoacoustic cell. Photoacoustic response is calibrated as a function of elemental carbon loading using laboratory-generated elemental carbon standards. The nature of the photoacoustic response is examined at several chopping frequencies using these calibration standards, and the physical principles necessary for an adequate interpretation of the experimental results is presented in detail. Practical considerations concerning ambient carbon monitoring are outlined; in particular, the perturbation due to the presence of scattering particulates is examined and limited experimental quantification of this perturbation is reported. |
| Notes |
Caption title. "August 1981." "EPA-600/7-81-129." Microfiche. |
