Application Note: The Agilent 7700x ICP-MS Advantage For Drinking Water Analysis

The Agilent 7700 Series ICP-MS brings 3rd generation Octopole Reaction System (ORS³) technology to routine environmental analysis of trace metals in drinking waters. Building on the cell technology used in the successful Agilent 7500 Series ICP-MS, the ORS³ has been completely redesigned to significantly improve the performance of helium (He) collision mode for the removal of polyatomic interferences. He mode is simple and universal, enabling the 7700x ICP-MS to remove all polyatomic interferences under a single set of conditions, without requiring any previous knowledge about the sample, and without the need for complex mathematical corrections. The result is easier set-up, lower detection limits, faster analysis, and improved interference removal, especially for the difficult plasma based interferences affecting iron and selenium. Selenium detection limits less than 20 parts per trillion (ppt) are now routinely achievable in He mode.