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Rudjer Bošković Institute Radiocarbon Measurements V

Published online by Cambridge University Press:  18 July 2016

Dušan Srdoč ,
Adela Sliepčevic ,
Bogomil Obelic  and
Nada Horvatinčic
Dušan Srdoč
Affiliation:
Rudjer Bošković Institute, POB 1016, 41001 Zagreb Yugoslavia
Adela Sliepčevic
Affiliation:
Rudjer Bošković Institute, POB 1016, 41001 Zagreb Yugoslavia
Bogomil Obelic
Affiliation:
Rudjer Bošković Institute, POB 1016, 41001 Zagreb Yugoslavia
Nada Horvatinčic
Affiliation:
Rudjer Bošković Institute, POB 1016, 41001 Zagreb Yugoslavia
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The following list contains dates of samples measured since our previous list (R, 1977, v 19, p 465-475). As before, age calculations are based on the Libby half-life, 5570 ± 30 years, and reported in years before 1950. The modern standard is 0.95 of the activity of NBS oxalic acid. Solid sample pretreatment, combustion and counting technique are essentially the same as described in R, 1971, v 13, p 135-140. Groundwater samples were prepared following the procedure adopted by the IAEA (IAEA, 1977). Carbonates and hydrocarbonates from water samples were precipitated by adding saturated barium chloride solution while the alkalinity was adjusted to pH = 8 by adding carbonate-free saturated solution of sodium hydroxide. The precipitation was enhanced by adding iron salts and Praestol as coagulating medium. Carbon dioxide was evolved by acidification of the precipitate and converted to methane. Statistical processing of data has been computerized (Obelić and Planinić, 1975). Sample descriptions were prepared with collectors and submitters. The errors quoted correspond to 1σ variation of sample net counting rate and do not include the uncertainty in 14C half-life.

Type
Date Lists
Information
Radiocarbon , Volume 21 , Issue 1 , 1979 , pp. 131 - 137
Copyright
Copyright © The American Journal of Science 

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