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Ozone depletion in Antarctic Carcinogen Toxic

The Risks of Halocarbons. Ozone depletion in Antarctic Carcinogen Toxic. Sample Introduction Techniques. The whole air injection onto packed columns The cryo-preconcentration and thermo-injection onto capillary column Chemical adsorbents. Chromatographic Condition.

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Ozone depletion in Antarctic Carcinogen Toxic

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  1. The Risks of Halocarbons • Ozone depletion in Antarctic • Carcinogen • Toxic

  2. Sample Introduction Techniques • The whole air injection onto packed columns • The cryo-preconcentration and thermo-injection onto capillary column • Chemical adsorbents

  3. Chromatographic Condition • Column: DB-624 (75m x 0.53mm; d.f.=3m) • HP 6890 GC-ECD • Trap Tube: 8.4cm x 0.32mm o.d. • Temperature Programming 1cm Carboxen 1000 + 1cm Carboxen 1003 + 1cm Carbotrap B 180℃ 38 min 10℃/ min 5 min 60℃

  4. 30℃ Trapping 5℃ Trapping

  5. 30℃ Trapping RSD = 10.81% RSD = 3.26%

  6. 5℃ Trapping RSD = 4.58% RSD = 3.67%

  7. (a) CFC-12 R2 = 0.9998 (b) CCl2=CC12 R2 = 0.9999

  8. Conclusion • An automated GC system was constructed to monitor ambient halocarbons. • By using CFC-113 and CCl4 as intrinsic internal standards to test the stability of the system.

  9. Thanks For Your Attention !

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