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[求助] LOD的测定与interference effect的实验测定

本人投稿至ana chim. acta,reviewer要求提供检出限LOD和杂质干扰interference effect的数据。
我的论文主要是采用荧光猝灭法测定铜离子,请问各位大侠如何测定其LOD?如何设计杂质干扰的实验?
看到一篇相关的论文,采用荧光猝灭法测汞离子的浓度。
As can be seen in Fig. 5b, at the Hg2+concentration range of 0.2 uMto 2 uM, the fluorescence intensity of the GDTC-QDs was closedrelated to the amount of Hg2+added to the nanohybrid system,which could be used for the quantification of Hg2+with correlation coefficient of 0.9919. The results indicate that Hg2+can be analyzedto a detection limit (3Sigma) of 0.1 uM.
想请问大侠作者利用什么公式通过“correlation coefficient of 0.9919”计算出来LOD为0.1 uM?
LOD的测定与interference effect的实验测定
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