2Vassileva E. Proinova L, Hadjiivanov K. Solid-phase extraction of heavy metal ions on a high surface area titanium dioxide(anatase). Analyst,1996,121:607
3M. Hiraide, J. Iwasawa, H. Kawaguchi. Collection of trace heavy metalsammonium pyrrolidinedithiocarbamate on surfactant-coated alumina sorbents. (2):231. complexed with Talanta, 1997,44
4Dressier V L. Pozebon D. Curtius A. J. Determination of Ag,Te,U and Au in waters and inbiological samples FI-ICP- MS following on- line preconcentration. Anal. Chim. Acta. 2001,438:235
