| Main Title |
Environmental Radiocarbon Measurements. |
| Author |
Currie, Lloyd A. ;
|
| CORP Author |
National Bureau of Standards, Washington, DC.;Environmental Protection Agency, Washington, DC. |
| Year Published |
1978 |
| Report Number |
NBS-5531224; |
| Stock Number |
PB-290 703 |
| Additional Subjects |
Radiocarbon dating ;
Carbon 14 ;
Carbon 12 ;
Fossil fuels ;
Low level counting
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-290 703 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
19p |
| Abstract |
Measurements of the 14C/12C ratio in environmental carbonaceous species can provide a unique indication of natural vs anthropogenic (fossil fuel) origin. Because of the low concentrations of atmospheric gases and particles which contain carbon, convenient sample sizes are limited to tens of milligrams of carbon. An assessment of the measurement feasibility, using 10 mg-C samples and Accelerator Mass Spectrometry and Low-Level Counting is given, together with the kinds of environmental problems which might be studied. Preliminary low-level gas-proportional counting results, are given for atmospheric particulate samples containing 5-10 mg-C. |
| Supplementary Notes |
Sponsored in part by Environmental Protection Agency, Washington, DC. |
| Availability Notes |
Pub. in Proceedings of the Conference on Radiocarbon Dating with Accelerators (First), Held at Rochester, NY. on April 20-21, 1978, p372-390. |
| NTIS Title Notes |
Final rept.. |
| PUB Date Free Form |
1978 |
| Category Codes |
18B; 14B; 77B; 86V |
| NTIS Prices |
Not available NTIS |
| Primary Description |
500/00 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
323756048 |
| Origin |
NTIS |
| Type |
CAT |
