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Graphite rod atomizer in atomic absorption spectrometry for direct determination of iron in serum.

DURING THE PAST FEW YEARS, several types of non-flame atomizers for atomic absorption spectrometry have been fully described (1-3). Because non-flame atomization has resulted in atomic absorption absolute detection limits in the picogram region, much attention has been given recently to the possible advantages for using non-flame atomic absorption spectrometry for the measurement of trace metals in real samples, e.g., in jet engine oils (4-7) and also in biological materials (8-10). Most recently, Kubasik, Volosin, and Murray (11) have described a method for analysis of lead in whole blood where only a dilution of the whole blood sample was required. In the present study, a method for direct analysis of iron in 1-p1 samples of serum is described, and a correlation study with a n automated spectrophotometric procedure is presented.