The following document describes the method used for determination of sub-microgram per liter (µg/L) concentrations of a large number of elements in water samples and in waste extracts or digests.

• Method 6020B: Inductively Coupled Plasma - Mass Spectrometry, part of Test Methods for Evaluating Solid Waste, Physical/Chemical Methods (PDF)(33 pp, 271 K, July 2014 )