31. Sirisaksoontorn, W., Thachepan, S., Suwanatus, S., and  Songsasen, A., Photocatalytic Degradation of Benz[a]anthracene by Using N-Doped TiO2, 34th  Congress on Science and Technology of Thailand, 31st  October - 2nd November, 2008, Bangkok, Thailand. ( PDF  )

32. Phatinawin R., Sirisaksoontorn, W., and  Songsasen, A., Synthesis of Samarium doped TiO2 catalysts for photodegradation of phenanthrene, 34th  Congress on Science and Technology of Thailand, 31st  October - 2nd November, 2008, Bangkok, Thailand. ( PDF  )

33. Ngamsopasiriskun C., Thachepan, S., Suwanatus, S., and  Songsasen, A., Preparation of titanium dioxide supported activated carbon (TiO2/AC) for treatment of phenol in aqueous solution, 34th  Congress on Science and Technology of Thailand, 31st  October - 2nd November, 2008, Bangkok, Thailand. ( PDF  )

34. Kangwanwong, T., Pluempanupat, W., Parasuk, W. Charnsethikul, S. and Songsasen, A., Fluormetricdetermination of cyanide ion (CN-) by Meso-Tetraphenylporphyrin/Meso-TetraphenylporphyrinCobalt(II) system.  35th Congress on Science and Technology of Thailand, 15th October – 17th October, 2009, Chonburi, Thailand. ( PDF  )

35. Chitchiaranai, W., Wannalerd, B., Sirisaksoontorn, W., and Songsasen, A., Degradation of methylene blue by using N-S co-doped TiO2 under visible light. 35th Congress on Science and Technology of Thailand, 15th October – 17th October, 2009, Chonburi, Thailand. ( PDF  )

36. Tabpla, R., Ngamsopasiriskun, C., Songsasen, A., Treatment of methylene blue by titanium dioxide supported charcoal from corncob (TiO2/C). 35th Congress on Science and Technology of Thailand, 15th October – 17th October, 2009, Chonburi, Thailand. ( PDF  )

37. Preparation of Activated Carbon Supports TiO2 Nanocomposite (TiO2/AC) and Phenol Removal Application, C, Ngamsopasiriskun, P. Pornsinlapatip, S. Thachepan, and  A. Songsasen*, 6th Singapore International Chemical Conference, 15-18 December 2009, Suntec International Convention& Exhibition Centre, Singapore, p 137 (2009).

38. Case Study for Sustainable Management of Tributyltin Contamination in the Environment, S. Bangkedphol, H.E. Keenan, C. Davidson and A. Songsasen*, International Conference & Exhibition on Pure and Applied Chemistry 2010, 21-23 January 2010, Sunee Grand Hotel and Convention Center, Ubonratchathani, Thailand, (2010).

39. Stimulation and Augmentation Technique to Decontaminate Hazardous Pesticide, Tributyltin from Environment, A. Sakultantimetha, H.E. Keenan, T. Beattie, and A. Songsasen*, International Conference & Exhibition on Pure and Applied Chemistry 2010, 21-23 January 2010, Sunee Grand Hotel and Convention Center, Ubonratchathani, Thailand, (2010).