El. Altman et al., DETERMINATION OF METALS IN ATMOSPHERIC AEROSOLS BY ZEEMAN ATOMIC-ABSORPTION SPECTROMETRY WITH ABSORPTION PULSE RESTORATION, Journal of analytical chemistry, 51(8), 1996, pp. 824-828
It is shown that a linear relationship exists between the amount of Cd
, Cu, Mn, and Pb electrostatically accumulated in a graphite furnace a
nd the air volume drawn through the furnace. Compared to the commonly
used method of measuring the absorption pulse area, the method of puls
e shape restoration extends the analytical range for metals by 1.5-2 o
rders of magnitude. If electrostatic accumulation in a graphite furnac
e is used, the concentration detection limits of metals in atmosperic
air are three orders of magnitude lower than those attained in atomic-
absorption spectrometry employing aspiration through filters. Under th
e same sampling conditions, the error of determination of elements in
air does not exceed 10%. This result should be recognized as satisfact
ory, because an error of 25% is considered tolerable in most recommend
ed procedures [13].