| Main Title |
Dichotomous Samplers Modified for Use with Electron Microscopy. |
| Author |
Mamane, Y. ;
Dzubay., T. G. ;
|
| CORP Author |
Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
| Publisher |
c1990 |
| Year Published |
1990 |
| Report Number |
EPA/600/J-90/183; |
| Stock Number |
PB91-116830 |
| Additional Subjects |
Impactors ;
Particle size ;
Electron microscopy ;
Sulfates ;
Aerosols ;
Airflow ;
Reprints ;
Air samplers ;
Particulate sampling
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB91-116830 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
10p |
| Abstract |
Large sulfate artifacts up to 2 micrometers in diameter were observed by scanning electron microscopy for the fine particle fraction collected in dichotomous samplers. The artifacts were attributed to small liquid particles that piled up on the filter, coalesced, and later dried as larger particles. Such artifacts were eliminated when particles were collected in a modified dichotomous sampler in which 80% to 90% of the airflow was diverted from the fine fraction filter. This airflow diversion technique was used successfully with both virtual-impactor and tandem-filter types of dichotomous samplers. (Copyright (c) Elsevier Science Publishing Co., Inc.) |
| Supplementary Notes |
Pub. in Aerosol Science and Technology, v13 p241-248 1990. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Dichotomous Samplers Modified for Use with Electron Microscopy. |
| Category Codes |
68A |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/09 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
101123721 |
| Origin |
NTIS |
| Type |
CAT |
