Esposito G G, Jacobs B W
Am Ind Hyg Assoc J. 1977 Aug;38(8):401-7. doi: 10.1080/0002889778507641.
A gas chromatographic method has been developed for the determination of aromatic hydrocarbons in solvent mixtures. Bulk solvents and charcoal tube air samples may be analyzed. The procedure utilizes the unique separation characteristics of a gas chromatographic column containing a highly selective stationary liquid phase, N,N-bis (2-cyanoethyl) formamide. The interfering oxygenated solvents are extracted using 75 percent H2SO4. An 11-foot, 35 percent CEF column may be used to qualitatively analyze the lower boiling aromatic hydrocarbons (benzene, toluene, xylenes). Total or specific aromatics are then quantitated using a 3-foot, 35 percent CEF column with an internal standard. Applications of liquid chromatographic concepts to this analysis were also investigated.
已开发出一种气相色谱法，用于测定溶剂混合物中的芳烃。可对大量溶剂和活性炭管空气样品进行分析。该方法利用了含有高选择性固定液相N,N-双（2-氰基乙基）甲酰胺的气相色谱柱的独特分离特性。使用75%的硫酸萃取干扰性含氧溶剂。一根11英尺长、35% CEF的色谱柱可用于定性分析低沸点芳烃（苯、甲苯、二甲苯）。然后使用一根3英尺长、35% CEF的色谱柱并以内标法定量分析总芳烃或特定芳烃。还研究了液相色谱概念在该分析中的应用。
