FeMnOx-1: A new microanalytical reference material for the investigation of Mn-Fe rich geological samples

Jochum, K. P., Wilson, S. A., Becker, H., Garbe-Schönberg, Dieter, Groschopf, N., Kadlag, Y., Macholdt, D. S., Mertz-Kraus, R., Otter, L. M., Stoll, B., Stracke, A., Weis, U., Haug, G. H. and Andreae, M. O. (2016) FeMnOx-1: A new microanalytical reference material for the investigation of Mn-Fe rich geological samples Chemical Geology, 432 . pp. 34-40. DOI http://dx.doi.org/10.1016/j.chemgeo.2016.03.026.

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Abstract

Suitable Mn-Fe rich microanalytical reference materials (MRMs) as calibration material for laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS) have not been available. The United States Geological Survey (USGS) in collaboration with the Max Planck Institute for Chemistry has prepared a synthetic MRM, FeMnOx-1, with elevated mass fractions of MnO (25 g/100 g), Fe2O3 (8.5 g/100 g) and high mass fractions of 25 trace elements varying between 200 and 5000 mg/kg. This new MRM has been designed as calibration material for a wide range of different Mn-Fe deposits, such as desert/rock varnish, ocean crusts and nodules as well as Mn accumulations in soils and lakes. Small-scale and large-scale homogeneity of FeMnOx-1 were tested with three LA systems (200 nm femtosecond, and 193 nm and 213 nm nanosecond lasers) using different spot sizes and fluences. Our results demonstrate that FeMnOx-1 is homogeneous in the pg to mu g and nm to mu m range and therefore well suited for microanalytical applications. The relative standard deviation (RSD) values obtained from repeated measurements are about 2-3% for test portion masses of 5-100 ng, and are comparable to those of the homogeneous NIST SRM610 and USGS GSE-1G reference glasses. Homogeneity of FeMnOx-1 was also verified for a test portion of 0.1 ng. Seven laboratories using five different bulk and microanalytical techniques were involved in the characterization of FeMnOx-1. Small amounts of this MRM can be obtained on request from the authors. (C) 2016 Elsevier B.V. All rights reserved.

Document Type: Article
Additional Information: Times Cited: 2 Jochum, K. P. Wilson, S. A. Becker, H. Garbe-Schonberg, D. Groschopf, N. Kadlag, Y. Macholdt, D. S. Mertz-Kraus, R. Otter, L. M. Stoll, B. Stracke, A. Weis, U. Haug, G. H. Andreae, M. O.
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
Refereed: Yes
DOI etc.: http://dx.doi.org/10.1016/j.chemgeo.2016.03.026
ISSN: 0009-2541
Projects: Future Ocean
Date Deposited: 01 Mar 2017 08:16
Last Modified: 19 Dec 2017 12:45
URI: http://eprints.uni-kiel.de/id/eprint/36156

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