1. Aspects of speciation / Emrah Yildirim and Lutfi ye Sezen Yildirim -- 2. Sample pre-treatment methods for organometallic species determination / Antonio Moreda-Pineiro, Jorge Moreda-Pineiro and Pilar Bermejo-Barrera -- 3. Separation techniques for elemental speciation in soil, sediments, and environmental samples / Marcia F. Mesko, Carla A. Hartwig, Cezar A. Bizzi, Edson I. Muller, Fabio A. Duarte and Paola A. Mello -- 4. Role and importance of hyphenated techniques in speciation analysis / Rajmund Michalski, Magdalena Jablon͡ska and Sebastian Szopa -- 5. Selenium speciation in the environment / Rodolfo G. Wuilloud and Paula Berton -- 6. Speciation of chromium and vanadium in soil matrices / Khakhathi L. Mandiwana and Nikolay Panichev -- 7. Speciation and solubility of thallium in low temperature systems : additional aqueous and solid thallium species potentially important in soil environments / Yongliang Xiong -- 8. Fractionation and speciation analysis of antimony in atmospheric aerosols and related matrices / Patricia Smichowski -- 9. Speciation of arsenic in soil, sediment and environmental samples / Selin Bora, Isil Aydin, Ersin Kilinc and Firat Aydin -- 10. Methods for mercury speciation in environmental samples / Zhenli Zhu, Qian He and Zhifu Liu -- 11. Zinc speciation studies in soil, sediment and environmental samples / Todd P. Luxton, Bradley W. Miller and Kirk G. Scheckel -- 12. Speciation analysis of tin in environmental samples / Valderi Luiz Dressler, Clarissa Marques Moreira dos Santos, Fabiane Goldschmidt Antes, Erico Marlon de Moraes Flores and Dirce Pozebon -- 13. Speciation and bioavailability of iodine in edible seaweed / Vanessa Romaris Hortas, Antonio Moreda Pineiro and Pilar Bermejo Barrera -- 14. Speciation and determination of tellurium in water, soil, sediment and other environmental samples / M.S. El-Shahawi, H.M. Al-Saidi, E.A. Al-Harbi, A.S. Bashammakh and A.A. Alsibbai -- 15. Trace elements and human health / Mehrdad Gholami and Hojatollah Yamini.