certification_of_reference_materials

1.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。
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2.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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