在分析化学,特别是微量分析中,经常需要取分液稀释测定,有时甚至要多次取分液稀释,这样在计算结果中,就要引入一个浓度倍数值,稍不细心,就会发生错误。本文总结导出一个极其简捷新颖的公式,只要把逐级稀释液的体积和取分液的体积代入公式即可求出母液对任意一级稀释液的浓度倍数值,公式如下所示: In analytical chemistry, especially in microanalysis, it is often necessary to take a dilution assay and sometimes even to dilute the solution several times, so that a multiple of concentration values ​​will be introduced into the calculation, with slight inaccuracies and errors . This article concludes with an extremely simple and straightforward formula that can be obtained by simply multiplying the volume of the graduated dilution and the volume of the fraction into the formula to obtain the fold multiple of the concentration of the mother liquor for any dilution,