Abstract
An inner miniature cup has been devised for the direct determination of powder samples by Zeeman atomic absorption spectrometry with an electrothermal graphite furnace of a crucible type. The use of Zeeman instruments has solved a problem of the background absorption, and the use of the inner miniature cup has overcome the difficulty of inserting powder samples weighing less than 1.0 mg into a graphite furnace without loss of sample. This method has been applied to the direct determination of Pb, Cd, Zn, Cu, Mn and Cr in NBS standard samples such as bovine liver, orchard leaves etc.,
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