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无机离子交换剂由于具有耐高温、流失少等特点,不仅广泛应用于离子交换色谱分离金属离子,而且适宜于作为气-固色谱的吸附剂,这也是这类物质的一种新用途。我们在分析正辛烷试剂时,发现有一含量较大的杂质存在,但因为正辛烷主要用作溶剂,厂家对于烷烃杂质未作指标进行检验,这给使用者带来许多不便。作者曾报道了无机交换剂磷酸钛作为气固色谱固定相可分离一些气体及低沸点有机物。本文利用微晶型磷酸钛作为固定相,使用气相色谱及气质联用测定了正辛烷试剂中顺1,2-二甲基环己烷
Inorganic ion exchangers are widely used in ion exchange chromatography for the separation of metal ions due to their high temperature resistance and low loss. They are also suitable as adsorbents for gas-solid chromatography, which is also a new use of such materials. When analyzing n-octane reagents, we found a large amount of impurities. However, because n-octane is mainly used as a solvent, manufacturers do not test indicators of alkane impurities, which brings many inconveniences to users. The authors have reported that titanium dioxide, an inorganic exchanger, can be used as a gas-solid chromatographic stationary phase to separate some gases and low-boiling organic compounds. In this paper, the use of microcrystalline titanium phosphate as a stationary phase, the use of gas chromatography and GC / MS determination of n-octane reagent cis-1,2-dimethylcyclohexane