Nov, 2010
Precise isotopic determination of Hf and Pb at sub-nano gram levels by MC-ICP-MS employing a newly designed sample cone and a pre-amplifier with a 1012 ohm register
Journal of Analytical Atomic Spectrometry
- ,
- Volume
- 25
- Number
- 11
- First page
- 1712
- Last page
- 1716
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1039/c0ja00015a
- Publisher
- ROYAL SOC CHEMISTRY
Precise isotopic determination methods for Hf and Pb at sub-nano gram levels have been undertaken for this contribution utilizing the Neptune multiple collector ICP-MS (MC-ICP-MS) with a newly designed sample cone (the Jet cone) and a new pre-amplifier with a highly-resistive register of 1012 ohm. The Jet cone enhanced sensitivities 1.6 and 3 times for Hf and Pb, respectively. The Jet cone showed no significant improvements in reproducibility of Hf isotope analysis at >1 ng compared to the normal cone, but the reproducibility improved considerably by half when Hf concentration of <1 ng was measured. Thus, 0.3 and 0.8 ng of Hf can yield reproducibility (2SD in epsilon-unit) of 3 and 1.7, respectively. Reproducibility (RSD) of Pb-207/Pb-206, Pb-206/Pb-204, Pb-207/Pb-204 and Pb-208/Pb-204 were 0.026, 0.28, 0.33 and 0.36% using total Pb of 0.025 ng, and 0.02, 0.10, 0.10 and 0.08% using 0.05 ng, respectively. Thus, the Jet cone with the new pre-amplifier showed the best performance compared to the normal cone and pre-amplifier and are similar or even better than those obtained by the Pb-202-Pb-205 double-spike TIMS or multi-ion counting ICP-MS techniques.
- Link information
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- DOI
- https://doi.org/10.1039/c0ja00015a
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000283150100007&DestApp=WOS_CPL
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77958167719&origin=inward
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=77958167719&origin=inward
- ID information
-
- DOI : 10.1039/c0ja00015a
- ISSN : 0267-9477
- eISSN : 1364-5544
- SCOPUS ID : 77958167719
- Web of Science ID : WOS:000283150100007