Zn. Kakhnovich et Lp. Orlova, DETERMINATION OF HEAVY-METALS IN PLANT ASH SUSPENSION BY ELECTROTHERMAL ATOMIC-ABSORPTION SPECTROMETRY, Eurasian soil science, 31(6), 1998, pp. 679-682
A procedure for determining heavy metals in plant samples by electroth
ermal atomic-absorption spectrometry has been developed for standard r
eference samples of plant materials. Sample preparation involved the a
ddition of 1% HNO3 to a plant ash portion followed by ultrasonic treat
ment or shaking in a rotary shaker. The suspension obtained was analyz
ed in a graphite furnace for Cd, Pb, Cu, Ni, Cr, and Mo. Operating con
ditions and detection limits for these elements were given.