二恶英

化合物：: 1,4,7,8-TCDD；2,3,7,8-TCDD；1,2,3,4-TCDD；1,2,3,7 + 1,2,3,8-TCDD；1,3,7,8-TCDD；1,2,6,7-TCDD

色谱条件：

柱温: 200 oC ( 1 min ) - 240 oC, 3oC/min ( 6 min ) - 275 oC, 15 oC/min ( 30 min )

载气: H2, 40 cm/sec

进样方式: 冷柱头柱上进样, 275 oC

样品: TCDD 异构体, 1.5 μL

检测: ECD, 5kHz full scale, 275 oC

图谱：

1. 1,4,7,8-TCDD；2. 2,3,7,8-TCDD；3. 1,2,3,4-TCDD；4. 1,2,3,7 + 1,2,3,8-TCDD；5. 1,3,7,8-TCDD；6. 1,2,6,7-TCDD