1. Sample Introduction in ICP-MS: Liquid Chromatography;Xing,2010
2. Trace metal and metalloid species determination: Evolution and trends;Donard;Spectrochim. Acta Part B: Spectrosc.,1998
3. The role of speciation in analytical chemistry;Kot;TrAC Trends Anal. Chem.,2000
4. (U.S. Environmental Protection Agency, Toxicological review of hexavalent chromium). (Available from): 〈http://www.eenvandaag.nl/uploads/doc/IRIS%20EPA%20toxicity%20chromium.pdf〉, 1998 (07.05.16).
5. World Health Organization, Guidelines for Drinking-water Quality. Available from: 〈http://www.unicef.org/cholera/Chapter_4_prevention/01_WHO_Guidelines_for_drinking_water_quality.pdf〉, 2011 (07.05.16).