Silva Lurdes I B, Rocha-Santos Teresa A P, Duarte A C
ISEIT/VISEU-Instituto Piaget, Estrada do Alto do Gaio, Galifonge, 3515-776 Lordosa, Viseu, Portugal.
Anal Sci. 2008 Aug;24(8):963-6. doi: 10.2116/analsci.24.963.
An analytical method, based on separation with gas chromatography (GC) and detection with optical fiber (OF), was used for the separation, detection and quantification of benzene, toluene, ethylbenzene, p-xylene, m-xylene and o-xylene. The use of OF as a detector is based on the variations of the reflected optical power detected when the aromatic compounds eluted from the GC column are sorbed in a thin polymeric film on a single-mode OF. General figures of merit, such as the analytical time, analytical error and analytical performance of GC-OF were similar to those of the classical analytical methods, such as a gas chromatography-flame ionization detector (GC-FID). However, the developed GC-OF method constitutes a much less expensive alternative for the speciation of aromatic hydrocarbons compounds, with high accuracy, and being most suitable for actual monitoring work on confined environments.
一种基于气相色谱（GC）分离和光纤（OF）检测的分析方法，用于苯、甲苯、乙苯、对二甲苯、间二甲苯和邻二甲苯的分离、检测和定量。使用OF作为检测器是基于当从GC柱洗脱的芳香族化合物吸附在单模OF上的薄聚合物膜中时检测到的反射光功率的变化。GC-OF的一般性能指标，如分析时间、分析误差和分析性能，与经典分析方法如气相色谱-火焰离子化检测器（GC-FID）相似。然而，所开发的GC-OF方法构成了一种成本低得多的替代方法，用于芳香烃化合物的形态分析，具有高精度，并且最适合于密闭环境中的实际监测工作。
