Issue 1, 2014

The absolute isotopic composition and atomic weight of molybdenum in SRM 3134 using an isotopic double-spike

Abstract

Analytical techniques have been developed to perform a fully calibrated measurement of the isotopic composition of molybdenum reference materials using multiple collector inductively coupled plasma mass spectrometry. A correction for instrumental mass bias was performed using a molybdenum double-spike prepared from gravimetric mixtures of 92Mo and 98Mo isotope spikes. The absolute isotopic composition of the NIST SRM 3134 molybdenum reference material with 2 s.d. uncertainty was determined to be 92Mo = 14.65(4), 94Mo = 9.187(12), 95Mo = 15.873(10), 96Mo = 16.673(3), 97Mo = 9.582(6), 98Mo = 24.29(3), and 100Mo = 9.74(2). The atomic weight of molybdenum in SRM 3134 was calculated as Ar = 95.949(3). Delta values (reported as δ98/95Mo relative to SRM 3134) were determined for SCP Science – PlasmaCal molybdenum as −0.42(10)‰ and for Johnson-Matthey pure molybdenum rod as −0.45(12)‰. The total natural variation of molybdenum of −1.5‰ to +3‰ results in a calculated atomic weight interval of Ar = [95.944, 95.956].

Graphical abstract: The absolute isotopic composition and atomic weight of molybdenum in SRM 3134 using an isotopic double-spike

Article information

Article type
Paper
Submitted
09 May 2013
Accepted
19 Sep 2013
First published
10 Oct 2013

J. Anal. At. Spectrom., 2014,29, 85-94

The absolute isotopic composition and atomic weight of molybdenum in SRM 3134 using an isotopic double-spike

A. J. Mayer and M. E. Wieser, J. Anal. At. Spectrom., 2014, 29, 85 DOI: 10.1039/C3JA50164G

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