Issue 9, 2013

Determination of ultra-low 236U/238U isotope ratios by tandem quadrupole ICP-MS/MS

Abstract

Isotope ratios of 236U/238U were measured at levels below 10−7 by single collector ICPMS with a tandem quadrupole mass separation mechanism. Peak tailing of the prominent 238U+ ion beam on the 236U+ peak was reduced to the level of ∼10−10 by use of two quadrupole mass filters. The 235UH+ interference on 236U+ was efficiently reduced to a UH+/U+ ratio of 1 × 10−8 by an ion–molecule reaction between UH+ and O2 in a collision/reaction cell placed between the two quadrupoles. The resultant detection limit for 236U/238U measurement was better than those reported by any other ICPMS study. The 236U/238U ratios, measured as 236U16O+/238U16O+, were determined in the range 10−9 to 10−7 without correction for spectral interference. Accurate measurements of 236U/238U to as low as 1 × 10−10 are projected.

Graphical abstract: Determination of ultra-low 236U/238U isotope ratios by tandem quadrupole ICP-MS/MS

Article information

Article type
Communication
Submitted
22 Apr 2013
Accepted
26 Jun 2013
First published
16 Jul 2013

J. Anal. At. Spectrom., 2013,28, 1372-1376

Determination of ultra-low 236U/238U isotope ratios by tandem quadrupole ICP-MS/MS

M. Tanimizu, N. Sugiyama, E. Ponzevera and G. Bayon, J. Anal. At. Spectrom., 2013, 28, 1372 DOI: 10.1039/C3JA50145K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements