This test method is a widely used analytical procedure for the quantitative determination of trace metals and elements in various water and wastewater samples using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). This method is recognized for its high sensitivity and precision, allowing for the detection of metals at ultra-trace levels. This test method quantifies soluble aluminum, arsenic, boron, cadmium, chromium, cobalt, copper, lead, molybdenum, nickel, selenium, silver, and vanadium.