Performance of the Agilent 7900 ICP-MS with UHMI for high salt matrix analysis

Since the fi rst generation of commercial ICP-MS appeared on the market in the 1980’s, the technique has been adopted for trace elemental analysis across a wide range of industries and applications. The measurement of high matrix samples typical of environmental, clinical, food, nuclear and geological applications, however, remains challenging. When high total dissolved solids (TDS) samples are analyzed directly by ICP-MS, matrix may deposit on the sampling and skimmer cone orifi ces, leading to a downward drift of the signal. The analyte signal may also be signifi cantly suppressed (or, less commonly, enhanced) by matrix components when analyzing these sample types [1]. High matrix environmental samples of interest include marine organisms, sediments, groundwater, open ocean and coastal seawater [2]. Enclosed lakes and lagoons with salt levels far in Performance of the Agilent 7900 ICP-MS with UHMI for high salt matrix analysis