The necessity of the development of new generation of certified reference materials (CEMs) and the role that NAA will play in the certification of those CRMs are discussed.
讨论了研制适用于微分析质控的新一代有证标准物质(CRM)的必要性，以及NAA在新一代CRM认证中的作用。
The status of the organic reference materials at home and abroad is introduced, and methods of the preparation and certification of the organic reference materials are discussed.
介绍有机标准物质的国内外现状，论述有机标准物质的制备和定值方法。
The status of the organic reference materials at home and abroad is introduced, and methods of the preparation and certification of the organic reference materials are discussed.
介绍有机标准物质的国内外现状，论述有机标准物质的制备和定值方法。
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