TM18-01 Validation of inductively-coupled plasma mass spectrometer instruments for analysis of trace metals in unfiltered-water and filtered-water samples

This memorandum documents method performance of recently acquired inductively-coupled plasma mass spectrometer (ICP-MS) instrumentation and method quality, including variability, bias, interferences, and detection limits (DLs) for trace metals in unfiltered and filtered-water measured by inductively-coupled plasma mass spectrometry at the National Water Quality Laboratory (NWQL). Out-of-date instruments used to make these measurements have been replaced, and optimized method parameters as well as validation data are reported here.