New supplemental activator for lead isotope analysis using TIMS

Susumu Nohda, Bo Shian Wang, Chen Feng You, Ryuichi Shinjo

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We have devised a new supplementary activator for lead isotope measurements performed using thermal ionization mass spectrometry (TIMS). The activator consisted of a mixture of 250 ppm Ge and 500 ppm Re and was used with normal colloidal silica. This new substance shows excellent performance in terms of enhancing the ion beam intensity. The supplementary activator yielded 3.5-4.5 × 10-11 A 208Pb for 10 ng Pb, 1.5-2.5 × 10-11 A for 5 ng Pb, and ∼1.5 × 10-11 A for 2.5 ng Pb samples, indicating that the new activator was superior to those currently in use. This improvement should be applicable to samples with low Pb content, for example, in environmental tracer studies and Pb-Pb chronology studies.

Original languageEnglish
Pages (from-to)169-174
Number of pages6
JournalGeochemical Journal
Volume45
Issue number2
DOIs
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

Fingerprint

Dive into the research topics of 'New supplemental activator for lead isotope analysis using TIMS'. Together they form a unique fingerprint.

Cite this