懂球帝

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研制標準物質、標準樣品的定值方法
瀏覽次數:65發布日期:2019-11-28

【LAIYUAN/ZUOZHE】BEINACHUANGLIAN 

標準樣品

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標準物質標準樣品的定值方法分為基準測量方法、參考方法和國內外公認的有效方法3種。基準測量方法是具有樶高計量學特性的方法,其操作可以被完整地描述和理解,可以用SI單位對不確定度進行完整表述,測量結果不依賴被測量的測量標準。

基準方法有:同位素稀釋質譜法庫侖法懂球帝、重量法、滴定法、凝固點下降測定法。參考方法是經過系統地研究,確切而清晰地描述了準確測量特定化學成分量所必需的條件和過程的方法,其準確度和精密度能滿足評價其他方法準確度和給一級標準物質賦值的要求。國內外公認的有效方法是已被證明技術性能可以滿足其應用目的的方法。

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