AMS radiocarbon analysis of microsamples

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dc.contributor.authorJacobsen, GEen_AU
dc.contributor.authorHua, Qen_AU
dc.contributor.authorTarshishi, Jen_AU
dc.contributor.authorFink, Den_AU
dc.contributor.authorHotchkis, MACen_AU
dc.contributor.authorLawson, EMen_AU
dc.contributor.authorSmith, AMen_AU
dc.contributor.authorTuniz, Cen_AU
dc.date.accessioned2021-07-30T01:59:13Zen_AU
dc.date.available2021-07-30T01:59:13Zen_AU
dc.date.issued1997-02-12en_AU
dc.date.statistics2021-07-19en_AU
dc.descriptionThis item is held by ANSTO Library and is shelved at DDC 930.1/2(RSCA).en_AU
dc.description.abstractThe ANTARES AMS Centre has two chemistry laboratories dedicated to preparing targets for measurement. Target preparation encompasses a variety of activities ranging from the curation of incoming samples to the numerous steps involved in the purification and processing of dissimilar samples. One of the two laboratories is set up for the physical and chemical pretreatment of 14C samples. Treatments include cleaning by sonification, sorting, grinding and sieving, and chemical treatments such as the standard AAA treatment, and solvent extraction. Combustion and graphitisation are also carried out in this laboratory. The second laboratory is a clean room and is dedicated to the combustion, hydrolysis and graphitisation of 14C samples as well as processing targets for the other isotopes. Combustion is achieved by heating the sample to 900 deg C in the presence of CuO, the resulting gas is purified by passing over Ag and Cu wire at 600 deg C. Graphitisation is carried out by reducing the CO{sub 2} with an iron catalyst (600 deg C) in the presence of zinc (400 deg C) and a small amount of hydrogen. Samples such as charcoal, shell, bone, wood, sediment, seawater and groundwater, containing 0.3-1 mg or more of original carbon, are processed routinely for radiocarbon analysis. The current 14C chemistry background for 1 mg carbon is approx. 0.3 percent of modern carbon (pMC) enabling materials` dating up to 45 000 BP.en_AU
dc.identifier.citationJacobsen, G. E., Hua, Q., Tarshishi, J., Fink, D., Hotchkis, M. A. C., Lawson, E. M., Smith, A. M. & Tuniz, C. (1997). AMS radiocarbon analysis of microsamples. Paper presented at the Sixth Australasian Archaeometry Conference: Australasian Archaeometry - retrospectives for the new millennium, Sydney (Australia), 10-13 Feb 1997. In Conference Handbook, Paper No. 36.en_AU
dc.identifier.conferenceenddate13 February 1997en_AU
dc.identifier.conferencenameSixth Australasian Archaeometry Conference: Australasian Archaeometry - retrospectives for the new millenniumen_AU
dc.identifier.conferenceplaceSydney, Australiaen_AU
dc.identifier.conferencestartdate10 February 1997en_AU
dc.identifier.isbn0731302680en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11161en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Nuclear Science and Engineering, Australian Nuclear Science & Technology Organisation and Australian Museumen_AU
dc.subjectMass spectroscopyen_AU
dc.subjectANSTOen_AU
dc.subjectANTARES Tandem Acceleratoren_AU
dc.subjectCarbon 14en_AU
dc.subjectLaboratoriesen_AU
dc.subjectNuclear facilitiesen_AU
dc.titleAMS radiocarbon analysis of microsamplesen_AU
dc.typeConference Abstracten_AU
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