21. Temyarasilp, P., Songsasen, A. and Udomchoke, V., Preparation and Characterization of Activated Carbon from Dendrocalamus Asper Backer and Dendrocalamus Latiflorus, 32nd Congress on Science and Technology of Thailand, 10-12 October, 2006, Bangkok, Thailand. ( PDF  )

22. Khorboot, P., Songsasen, A. and Suwanpruk, R., Preparation of Activated Carbon from bambusa arundinacea(Retz) Wild and Gigantochloa Verticiliata by Phosphoric acid and Potassium Hydroxide Activation for the adsorption of Iodine, 32nd Congress on Science and Technology of Thailand, 10-12 October, 2006, Bangkok, Thailand. ( PDF  )

23. Songsasen, A., Bangkedphol, S., Sakultantimetha, A., Homchan, U., Lauhachinda, N. Gaines, A. and Keenan, H.E., Contamination of Heavy Metals and Polycyclic Aromatic hydrocarbons (PAHs) in the Thai/Laos Mekong River, Eco Summit, 22-27 May, 2007, Beijing, China.

24. Charsethikul, S., Songsasen, A., Kamolkijakarn, P and Khorboot, P., Adsorption of Phenol by Bamboo Charcoal: Bambusa arundinacea(Retz) Wild and Dendrocalamus copelandii and Dendrocamus asper Backer from Kanchanaburee Province, 33rd Congress on Science and Technology of Thailand, 18-20 October, 2007, Nakhon Si Thammarat, Thailand. ( PDF  )

25. Chotima, R., Parasuk, W. and Songsasen, A., Complex Formation Between 3-(2’- Thiazolylazo)-2,6-Diaminopyridine with Ruthenium(III) Ion, 33rd Congress on Science and Technology of Thailand, 18-20 October, 2007, Nakhon Si Thammarat, Thailand. ( PDF  )

26. Sirisaksoontorn, W., Chiengga, S., Suwanatus, S., Thachepan, S., and  Songsasen, A., Photocatalytic Degradation of Phenanthrene by Using Nitrogen-Doped TiO2 with Visible Light, Abstract of the International Conference & Exhibition on Pure and Applied Chemistry 2008, Jan. 30 - Feb. 1, 2008, Bangkok, Thailand, page 109.

27. Chotima, R., Parasuk, W. and Songsasen, A., Complex Formation Between 3-(2’- Thiazolylazo)-2,6-Diaminopyridine with Ruthenium(III) Ion, Abstract of the International Conference & Exhibition on Pure and Applied Chemistry 2008, Jan. 30 - Feb. 1, 2008, Bangkok, Thailand, page 110. ( PDF  )

28. Songsasen, A.,Chartsagonthong, C, Homchan, U., Lauhachinda, N., Keenan, H.E., Sakultantimetha, A., and  Bangkedphol, S., Effects of Cations, Anions and PAHs on the adsorption of Cadmium by the Mekong river Sediments, Abstract of the International Conference & Exhibition on Pure and Applied Chemistry 2008, Jan. 30 - Feb. 1, 2008, Bangkok, Thailand, page 330.

29. Boonseng, B., Butsomboon, P.,  and Songsasen, A., The complexes synthesis of 2-(2’-thiazolylazo)-5-aminoanisole and 4-(2’-thiazolylazo)-5-aminoanisole with Rhodium (III), Proceeding of the 46th National Conference, Kasetsart University, 2008. ( PDF  )

30. Warapo, N., Bangkedphol, S., Soonthornwatanasiri, T., and Apisit Songsasen,   Optimization of extraction method for organotin compounds in water sample, Proceeding of the 46th National Conference, Kasetsart University, 2008.