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標准物質定義

发布时间：2009-11-26 点击次数：1780次

標准物質是具有准確量值的測量標准,它在化學測量、生物測量、工程測量與物理測量領域得到了廣泛的應用.標准物質具有以下特點:
         (1)標准物質的量值只與物質的性質有關,與物質的數量和形狀無關;
         (2)標准物質種類多,僅化學成分量標准物質就數以千計,其量限範圍跨越12個數量級;
         (3)標准物質實用性強,可在實際工作條件下應用,既可用于校准檢定測量儀器,評價測量方法的准確度,也可用于測量過程的質量評價以及實驗室的計量認證與測量仲裁等;
         (4)標准物質具有良好的複現性,可以批量制備並且在用完後再行複制。

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