Specifies principles and procedures for the determination of trace levels of Ag, Al, As, Cd, Co, Cr, Fe, Mn, Mo, Ni, Pb, Sb, Se, Tl, V and Zn in surface water, ground water, drinking water, wastewater and sediments using atomic absorption spectrometry with electrothermal atomization in a graphite furnace. Applicable to the determination of low concentrations of elements.