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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
Library Call Number Additional Info Location Last
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