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. 2017 Aug 1;419:457–466. doi: 10.1007/s11104-017-3352-4

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© The Author(s) 2017.

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 1 — Correlation between EDXRF intensity and ICP-MS reference concentration for Fe and Zn in 50 whole grain cowpea samples with (top) single scan analysis and (bottom) averaged intensity for triplicate EDXRF scans for Fe and Zn (left and right respectively)