1 / 19

Snow

Concentration Variability of Anthropogenic Halocarbons and Applications as Internal Reference in Volatile Organic Compound Measurements. Snow. CFC in our life. Catalytic pathway of CFCs. Ozone hole. http://www.wretch.cc/blog/nomore2408/6554075. Montreal Protocol.

dugan
Télécharger la présentation

Snow

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Concentration Variability of Anthropogenic Halocarbons and Applications as Internal Reference in Volatile Organic Compound Measurements Snow

  2. CFC in our life

  3. Catalytic pathway of CFCs

  4. Ozone hole http://www.wretch.cc/blog/nomore2408/6554075

  5. Montreal Protocol • 1987 加拿大簽訂「蒙特婁破壞臭氧層物質管制議定書」 • 管制CFC-11, CFC-12, CFC-113, CFC-114, CFC-115 • 1990 第二次締約國會議 • 擴大列管物質，增列CCl4、CH3CCl3 等物質，並提前於 2000年全面禁用CFCs • 1992 第四次締約國會議 • 提前於1996年全面禁產CFCs

  6. Measurement data CFC-113 CCl4 http://agage.eas.gatech.edu/data.htm

  7. Application • 校正採樣體積 • 校正稀釋比例 • 作為自身內標 Quality Control

  8. Experimental Section

  9. Sampling • 1998, Spatial • 1996, Temporal Urban Sampling area Coastal • Source • Background Industrial Coastal

  10. Instrument FID ECD Uncoated

  11. Results & Discussion

  12. Chromatograms – DB-1 • ECD • FID

  13. Time series study

  14. Simultaneous study 5:00 & 5:30 A.M. 5:30 & 6:00 P.M.

  15. Concentration distribution of halocarbons • Electronic industrial park N= 25

  16. Concentration distribution of halocarbons • Coasline N= 65

  17. Mixing ratios

  18. Conclusion

More Related