Determination of trace elements in Baikal water by inductively coupled plasma mass spectrometry

An analytical scheme was developed for determining trace elements in water with ultralow mineralization using inductively coupled plasma mass spectrom etry in combination with the method of single- and multielement standard ad ditions. The conditions of instrumental analysis were described. Groups of trace elements that can be determined by the method of single- and multiele ment additions (concentrations 0.05-100 mu g/kg) calculated on the basis of element distribution in the studied water were recommended; the additions were introduced by gravimetry. Internal standards for the analyte isotopes used to calculate concentrations were selected, and correlation equations w ere derived. Performance characteristics of the results of analyses were es timated.