Zhu Shukui, Lu Xin, Qiu Yaqiong, Pang Tao, Kong Hongwei, Wu Caiying, Xu Guowang
National Chromatographic R&A Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
J Chromatogr A. 2007 May 25;1150(1-2):28-36. doi: 10.1016/j.chroma.2006.09.026. Epub 2006 Sep 28.
A method to determine the second dimensional real retention time, dead times on both dimensions and retention indices in constant inlet pressure mode was developed in comprehensive two-dimensional gas chromatography. At the same time, the conversion of GC x GC retention indices among different column temperature conditions were also conducted based on some thermodynamics parameters. The calculation accuracies are better than 1.0 retention index unit. Furthermore, a retention index database was developed and used to identify the compounds in a cigarette essential oil sample. It showed that identification by the database was of close agreement with by time-of-flight mass spectrometry, and some isomers could also be distinguished based on the retention index database.
在全二维气相色谱中开发了一种在恒定入口压力模式下测定二维实际保留时间、二维死时间和保留指数的方法。同时，基于一些热力学参数，还进行了不同柱温条件下全二维气相色谱保留指数的换算。计算精度优于1.0个保留指数单位。此外，还建立了一个保留指数数据库，用于鉴定卷烟精油样品中的化合物。结果表明，该数据库鉴定结果与飞行时间质谱法鉴定结果高度一致，并且基于该保留指数数据库还可以区分一些异构体。
