Show simple item record

dc.contributor.authorYang, In Che
dc.date.accessioned2021-02-11T19:52:02Z
dc.date.available2021-02-11T19:52:02Z
dc.date.issued1983-01-01
dc.identifier.citationYang, I. C. (1983). Evaluation of direct-precipitation and gas-evolution methods for radiocarbon dating of ground water. Radiocarbon, 25(2), 511-518.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S0033822200005804
dc.identifier.urihttp://hdl.handle.net/10150/652667
dc.descriptionFrom the 11th International Radiocarbon Conference held in Seattle, Washington, June 20-26, 1982.
dc.description.abstractThe extraction of dissolved carbonate species for age dating from a 100L water sample by the direct-precipitation method (DPM) and by the gas-evolution method (GEM) has been investigated. Stable carbon-isotope fractionation between initial and final carbon dioxide evolved was ca 11 per mil by GEM and 1 per mil by DPM. GEM will produce isotopically lighter carbon dioxide compared with DPM if carbonate recovery is low. Extraction efficiency of > 95% can be achieved by GEM in 3 hours using nitrogen gas at a sweeping rate of 2000cc per minute. DPM requires precipitates to settle overnight to assure > 95% recovery. GEM is little affected by a high concentration of sulfate ions, whereas DPM is greatly affected by sulfate resulting in less yield.
dc.language.isoen
dc.publisherAmerican Journal of Science
dc.relation.urlhttp://radiocarbon.webhost.uits.arizona.edu/
dc.rightsCopyright © The American Journal of Science
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectcarbonate ion
dc.subjectdirect precipitation method
dc.subjectgas evolution method
dc.subjectdissolved materials
dc.subjectage
dc.subjectground water
dc.subjecttechniques
dc.subjectsample preparation
dc.subjectC 14
dc.subjectcarbon
dc.subjectisotopes
dc.subjectradioactive isotopes
dc.subjectC 13 C 12
dc.subjectstable isotopes
dc.subjectabsolute age
dc.subjectfractionation
dc.titleEvaluation of Direct-Precipitation and Gas-Evolution Methods for Radiocarbon Dating of Ground Water
dc.typeProceedings
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.volume25
dc.source.issue2
dc.source.beginpage511
dc.source.endpage518
refterms.dateFOA2021-02-11T19:52:02Z


Files in this item

Thumbnail
Name:
808-1059-1-PB.pdf
Size:
735.2Kb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record