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本文介绍一种比较正确的测定气相色谱保留数据的方法。我们导出了一组计算调整保留时间与保留指数的数学计算公式,并用C_1-C_7正构烷烃组分的实验数据与文献数据进行了验证,与经典的Peterson和Hirsch公式比较,在较高的碳原子数范围内,两者的计算结果完全一致。应用非线性回归分析法,先求出同系物组分的调整保留时间与其分子量之间的指数关系中的回归常数与指数值,然后,再由两个相邻的烷烃组分的未调整保留时间之差,计算出任一组分的调整保留时间,这就是本方法的特点.
This article presents a more accurate method of determining GC retention data. We derive a set of mathematical formulas to calculate the retention time and retention index. The experimental data and literature data of the C 1 -C 7 n-alkanes are validated. Compared with the classical Peterson and Hirsch formula, The number of atoms, the two calculations are exactly the same. Using non-linear regression analysis, the regression constants and index values in the exponential relationship between the adjusted retention time of the homologue component and its molecular weight are determined first, and then the unadjusted retention time of two adjacent alkane components The difference, to calculate the adjustment of any component retention time, which is the characteristics of this method.