保留指数系统自五十年代末提出,即引起色谱学者的极大兴趣。一些色谱学者曾以热力学为基础,用键能理论研究了保留指数的加和性、建立了描述其物理意义的表达式,并成功地预计算了某些烷属烃的保留指数。表1 展不的结果表明,一些烷属烃的保留指数预计算值与实测值符合得很好。证明保留指数与分子结构之间具有相关性。这就意味着,保留指数不 Since the late 1950s, the system of retention indices has been of great interest to chromatographers. Some chromatographers have used thermodynamics to study the additive properties of retention indices using bond theory, established expressions that describe their physical meanings, and successfully predicted the retention indices of certain paraffins. The results shown in Table 1 show that the predicted values ​​for some paraffins’ retention indices are in good agreement with the measured values. Prove that there is a correlation between retention index and molecular structure. This means that the retention index does not