11. Songsasen, A., Bangkedphol, S., Pornsilapatip, P., and  Keenan, H.E., Comparative Evaluation of the Microwave-Assisted Extraction on Closed System and Sonication for the Extraction of Polycyclic Aromatic Hydrocarbons from Sediments, Abstract of the 2nd Asian International Conference on Ecotoxicology and Environmental Safety, September 26-29, 2004, Songkla, Thailand, page 70. ( PDF  )

12. Songsasen, A., Bangkedphol, S., Lauhachinda, N., Homchan, U., Udomchoke, V., Jiwapornkupt, P., Keenan, H.E., Gaines, A., and Tae, S., Seasonal Variation of Polycyclic Aromatic Hydrocarbons (PAHs) in the Thai/Laos Mekong River, 2003-2004, Abstract of the 2nd Asian International Conference on Ecotoxicology and Environmental Safety, September 26-29, 2004, Songkla, Thailand, page 72. ( PDF  )

13. Taweema, P., Songsasen, A., Parasuk, V., and Charnsethikul, S., Spectroscopic Studies of Effect of pH and Acid System for the Complex Formation Between Palladium(II) and 3-(2’- Thiazolylazo)-2,6-Diaminopyridine, Proceeding of the 43th National Conference, Kasetsart University, 2005. 323-330.

14. Taweema, P., Parasuk, V., and  Songsasen, A., Quantum Chemical Calculations of Geometry of Complex between 3-(2’- Thiazolylazo)-2,6-Diaminopyridine, and Palladium(II), Abstract of the 2nd Asian Pacific Conference on Theoretical & Computational Chemistry, May 2-6, 2005, Chulalongkorn University, Bangkok, Thailand, page 38.

15. Songsasen, A., Bangkedphol, S. and Keenan, H.E., Synchronous Fluorescence Spectroscopic Technique: The Tool for Rapid Identification of Polycyclic Aromatic Hydrocarbons (PAHs) At Sub-ppm Level in Liquid samples, Abstract of the 4th International Conference on Instrumental Methods of Analysis Modern Trends and Applications, Iraklion, Crete, Greece, October 2-6, 2005. ( PDF  )

16. Songsasen, A. and Poowanathai, N., Separation of Silver (I) by 4-(2'- Benzothiazolylazo)-3,5-Dimethylpyrazole Chelating Resins, Abstract of the 4th International Conference on Instrumental Methods of analysis Modern Trends and Applications, Iraklion, Crete, Greece, October 2-6, 2005. ( PDF  )

17. Songsasen, A., Chatsagonthong, C., Suwanpruk, R., Homchan, U. And Lauhachinda, N., Adsorption of Cd(II), Pb(II) and Mn(II) by Mekong River Sediment. Abstract of the 3rd Asian Pacific International Conference on Pollutants Analysis and Control, Bangkok, Thailand, December 12-15, 2005.

18. Udomchoke, V., Songsasen, A., Homchan, U., Phanwichien, K., Jiwapornkupt, P., Sunthoraranun, P., Lauhachinda, N., McGilligan, J.F., Keenan, H.E., Gibson, M.D., Gibson, G. and Gaines, A.F., The Thai-Laos Mekong River : Environment and the Health of Fish (2001-2004), Abstract of the 3rd Asian Pacific International Conference on Pollutants Analysis and Control, Bangkok, Thailand, December 12-15, 2005.

19. Chotima, R., Taweema, P. and Songsasen, A., Complex Formation Between 3-(2’- Thiazolylazo)-2,6-Diaminopyridine with Gold(III) ion. 31st Congress on Science and Technology of Thailand, 18-20 October, 2005, Nakhonratchasima, Thailand.

20. Boonkoom, T. , Songsasen, A., Synthesis of Nickel Microtube by Metal Reduction Method., 32nd Congress on Science and Technology of Thailand, 10-12 October, 2006, Bangkok, Thailand.