1. P. Patnaik , Handbook of Inorganic Chemicals , McGraw-Hill , New York , 2003
2. G. F. Nordberg , B. A.Fowler , M.Nordberg and L.Friberg , Handbook of the Toxicology of Metals , Elsevier BV , San Diego , 3rd edn, 2007
3. A. Kabata-Pendias and A. B.Mukherjee , Trace Elements From Soil to Human , Springer , Heidelberg , 2007
4. Sample Preparation Techniques in Analytical Chemistry, Chemical Analysis. A series of monographs on analytical chemistry and its applications , ed. S. Mitra and J. D. Winefordner , John Wiley & Sons, Inc. , Hoboken , 2003 , vol. 162
5. Z. Mester and R. E.Sturgeon , Comprehensive Analytical Chemistry , Sample Preparation for Trace Element Analysis , Elsevier Science , 1st edn, 2003 , vol. 41