色谱标准物质，含量还需分析校正吗?为什么?

应助达人

汽油氧化物分析么？

不太容易做的。

不用，它是标准，它用来校准你

工作标

如何理解：ASTM D5599，“before preparing the standards,determine the purity of the oxygenate stocks and make corrections for the impurities found. Whenever possible,use stocks of at least 99.9% purity. Correct for the purity of the components for water content determined by Test method D1744."

同感！

如何理解：ASTM D5599，“before preparing the standards,determine the purity of the oxygenate stocks and make corrections for the impurities found. Whenever possible,use stocks of at least 99.9% purity. Correct for the purity of the components for water content determined by Test method D1744."

应助达人

标液还怎么检定纯度？