Liquid Scintillation Counting of Carbon-14-Labeled Organic Nitro Compounds

1957 ◽  
Vol 29 (1) ◽  
pp. 13-16 ◽  
Author(s):  
Samuel. Helf ◽  
Cecil. White
Keyword(s):  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Nitro Compounds ◽  
Scintillation Counting ◽  
Carbon 14

scholarly journals Large-Volume Liquid Scintillation Counting of Carbon-14

Radiocarbon ◽  
1980 ◽  
Vol 22 (2) ◽  
pp. 417-427 ◽  
Author(s):  
Lorenz Eichinger ◽  
Werner Rauert ◽  
Josef Salvamoser ◽  
Manfred Wolf
Keyword(s):  
Detection Limit ◽  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Scintillation Counting ◽  
Measuring Chamber ◽  
Carbon 14 ◽  
Experimental Detection ◽  
Scintillation Solution ◽  
Special Measuring ◽  
Experimental Detection Limit

Efforts have been undertaken to further improve the relatively simple technique of low-level liquid scintillation counting of 14C. Two different approaches have been made. By synthesizing more benzene for 14C measurement than usual (with up to 19.5g of carbon) an experimental detection limit of about 0.1 percent modern has been achieved (97.5% confidence level, 1000 min). Absorption of CO2 with up to 5.3g of carbon in 160ml of an absorbent-scintillation solution and counting in a special measuring chamber resulted in an experimental detection limit of about 1 percent modern, with the sample preparation taking only 1 hour. The detection limits achieved by the two techniques correspond to 14C ages of about 55,000 and 35,000 years BP, respectively.

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