根据US EPA 8270D方法用SLB-5ms分析半挥发性化合物 色谱柱: SLB-5ms, 20 m x 0.18 mm I.D., 0.36 μm (28576-U) 柱温:40 °C (1 min.), 12 °C/min. to 200 °C, 20 °C/min. to 340 °C (2 min.) 进样口温度:250 ℃ MSD 接口温度: 340 °C 扫描范围: 40~450 amu 载气: helium, programmed flow; 0.5 mL/min (5 min. hold), 1 mL/min2 to 1.0 mL/min. (constant for remainder of run) 进样: 0.50 μL, pulsed (25 psi until 0.1 min.), splitless (0.75 min.) 玻璃衬管: 4 mm I.D., single taper 样品:50 ng on-column of a 72 component semivolatile standard and 8 surrogate compounds, plus 6 internal standards (at 40 ng oncolumn) in methylene chloride |