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The natural river water certified reference material SLRS ‐5 ( NRC ‐ CNRC ) was routinely analysed in this study for major and trace elements by ten French laboratories. Most of the measurements were made using ICP ‐ MS . Because no certified values are assigned by NRC ‐ CNRC for silicon and 35 trace element concentrations (rare earth elements, Ag, B, Bi, Cs, Ga, Ge, Li, Nb, P, Rb, Rh, Re, S, Sc, Sn, Th, Ti, Tl, W, Y and Zr), or for isotopic ratios, we provide a compilation of the concentrations and related uncertainties obtained by the participating laboratories. Strontium isotopic ratios are also given.
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Yeghicheyan et al. (2013) studied this question.
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