NBS19 carbonate, a primary reference material (RM) for the VPDB scale realisation introduced in 1987¹, was exhausted in 2009, and no primary RM was available for several years. This study describes the preparation and characterisation of a new RM, IAEA‐603, (Ca‐carbonate, calcite of marble origin) which shall serve as a new primary RM (replacement for NBS19), or primary calibrator aimed at the highest realisation of the VPDB scale for δ¹³C and δ¹⁸O values, including the VPDB‐CO₂ δ ¹⁸O scale.

中文翻译：

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IAEA-603的制备和表征，IAEA-603是一种新的主​​要参考材料，旨在实现VPDB规模，用于确定δ13C和δ18O。

NBS19碳酸盐，对于VPDB规模实现主参考材料（RM）在1987年推出¹，2009年被耗尽，并没有主RM可用数年。这项研究描述了一种新的RM IAEA-603（碳酸钙，大理石方解石）的制备和表征，它将用作新的主要RM（替代NBS19）或主要校准品，旨在最大程度地实现该目标。 VPDB规模为δ ¹³ C和δ ^18个O值，包括VPDB-CO ₂ δ ¹⁸ ö规模。