A modified lead-matrix separation procedure shown for lead isotope analysis in Trojan silver artefacts as an example
- A modified Pb–matrix separation procedure using NH4HCO3 solution as eluent has been developed and validated for determination of Pb isotope amount ratios by thermal ionization mass spectrometry. The procedure is based on chromatographic separation using the Pb·Spec resin and an in-house-prepared NH4HCO3 solution serving as eluent. The advantages of this eluent are low Pb blanks (<40 pgmL-1) and the property that NH4HCO3 can be easily removed by use of a heating step (>60 °C). Pb recovery is >95 % for water samples. For archaeological silver samples, however, the Pb recovery is reduced to approximately 50 %, but causes no bias in the determination of Pb isotope amount ratios. The validated procedure was used to determine lead isotope amount ratios in Trojan silver artefacts with expanded uncertainties (k=2) <0.09 %.
Autor*innen: | Jochen VoglORCiD, B. Paz, Maren Koenig, Wolfgang Pritzkow |
---|---|
Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Analytical and bioanalytical chemistry |
Jahr der Erstveröffentlichung: | 2013 |
Verlag: | Springer |
Verlagsort: | Berlin |
Jahrgang/Band: | 405 |
Ausgabe/Heft: | 9 |
Erste Seite: | 2995 |
Letzte Seite: | 3000 |
Freie Schlagwörter: | Analyte-matrix separation; Archaeometry; Mass spectrometry; Pb isotope ratio thermal ionization mass spectrometry |
DOI: | 10.1007/s00216-012-6323-x |
ISSN: | 1618-2642 |
ISSN: | 1618-2650 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 25.04.2013 |