b     HEAVY METALS SPECIATION IN SEDIMENTS OF A MEXICAN TROPICAL LAKE

 

J. Badillo-Camacho, J.O. Murillo-Delgado, I.D. Barcelo-Quintal, P.F. Zarate del Valle, E. Orozco-Guareño, U.J. López-Chuken, S. Gomez-Salazar