Author
Alessio, MarisaAllegri, Lucia
Improta, Salvatore
Belluomini, Giorgio
Cortesi, Cesarina
Manfra, Luigia
Turi, Bruno
Issue Date
1991-01-01
Metadata
Show full item recordCitation
Alessio, M., Allegri, L., Improta, S., Belluomini, G., Cortesi, C., Manfra, L., & Turi, B. (1991). University of Rome radiocarbon dates XVII. Radiocarbon, 33(1), 131-140.Journal
RadiocarbonAdditional Links
http://radiocarbon.webhost.uits.arizona.edu/Abstract
This list includes dates from Italy, Libyan Sahara, Niger and the Dahlak Islands, obtained from 1976 to 1980, using the benzene scintillation method. Chemical processing from sample to benzene follows procedures of Alessio et al (1978a). Standard pretreatment for wood and charcoal included boiling with 5-10% HCL. Pretreatment for a-labeled samples underwent leaching with 0.2N NaOH. Since the last date list, Lecroy NIM modules have replaced the original recording electronics for the liquid scintillation detection system, described in Alessio et al (1973, 1976). Benzene sample volumes up to 4.Sml, with appropriate amounts of NE 216 scintillator (Nuclear Enterprises, Ltd) yielded the best figure-of-merit (E2/B = 2300) for 2m1 benzene and an efficiency of 72%. Age calculations comply with standard Radiocarbon protocol, as Stuiver and Polach (1977) recommended, including normalization by mass spectrometrically determined delta-13C (Alessio et al 1969).Type
Articletext
Language
enISSN
0033-8222ae974a485f413a2113503eed53cd6c53
10.1017/S0033822200013254