原油成分的分流法应用

Gilson Semi‐Preparative HPLC System ? GX‐281 Liquid Handler ? Direct Injection Module ? 100 μL total sample loop injection ? 321 Pumping System with H2 Pump Heads ? 152 UV/VIS Detector ? 254 nm; sensitivity of 0.01 ? PrepELS™II (Evaporative Light Scattering) Detector ? Drift tube: 25?C ? Spray chamber: 0?C ? Full‐scale setting: 5 V Nitrogen flow: 50 psi VALVEMATE® II 2 positions; 6 port valve Phenomenex Security Guard Semi‐Prep Cartridge (10 x 10 mm) with a 0.20 μm in‐line filter Whatman Partisil Silica 10 μm column (9.4 x 500 mm) Solvents for sample preparation: Hexane (Figure 1) and hexane: dichloromethane (DCM): methanol (1:1:1)