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dc.contributor.authorCalderoni, Gilberto
dc.contributor.authorPetrone, Vincenzo
dc.date.accessioned2021-02-11T20:14:39Z
dc.date.available2021-02-11T20:14:39Z
dc.date.issued1992-01-01
dc.identifier.citationCalderoni, G., & Petrone, V. (1992). Department of Earth Sciences at the University of Rome radiocarbon dates I. Radiocarbon, 34(1), 105-113.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S0033822200013448
dc.identifier.urihttp://hdl.handle.net/10150/652978
dc.description.abstractWe report here, in part, dates measured on samples from Italy since the construction of a new 14C lab in 1990 for research in the fields of geology, paleomorphology and the biogeochemical cycle of carbon. We use liquid scintillation counting (LSC), following sample conversion to benzene through the four classical chemical steps: 1) combustion or hydrolysis to CO2; 2) production of Li2C2; 3) hydrolysis to C2H2; 4) trimerization of acetylene to C6H6 with specific catalysts. The vacuum line for benzene synthesis has been designed following a comparative review of the literature (Tamers 1960; Noakes et al. 1963; Scharpenseel & Pietig 1970; Harkness & Wilson 1973; Polach, Gower & Fraser 1972; Gupta & Polach 1985), and the valuable suggestions of many colleagues from well-established labs abroad. The compact vacuum line is mostly modular with “O”-ring-joined components, and is equipped with greaseless stopcocks. We use commercial two-stage rotary pumps, pressure transducers and gauges; an electrovalve coupled with a pressure control unit supplies the purified oxygen for sample combustion while holding constant, just higher than 1 atm, the gas pressure inside the combustion tube.
dc.language.isoen
dc.publisherDepartment of Geosciences, The University of Arizona
dc.relation.urlhttp://radiocarbon.webhost.uits.arizona.edu/
dc.rightsCopyright © by the Arizona Board of Regents on behalf of the University of Arizona. All rights reserved.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectUniversity of Rome
dc.subjectcatalogs
dc.subjectcharcoal
dc.subjectgeochronology
dc.subjectC 14
dc.subjectcarbon
dc.subjectdates
dc.subjectisotopes
dc.subjectradioactive isotopes
dc.subjectabsolute age
dc.titleDepartment of Earth Sciences at the University of Rome Radiocarbon Dates I
dc.typeArticle
dc.typetext
dc.identifier.journalRadiocarbon
dc.description.noteThis material was digitized as part of a cooperative project between Radiocarbon and the University of Arizona Libraries.
dc.description.collectioninformationThe Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume34
dc.source.issue1
dc.source.beginpage105
dc.source.endpage113
refterms.dateFOA2021-02-11T20:14:39Z


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