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Matrix Effects in the Emission Spectrometric Analysis of Trace Metals in Biological Specimens

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A study was made of the effect of metals that appear in animal tissues in the mg% range on the spectrochemical determination of certain trace metals in a NaCl matrix. The presence of as little as 1 mg% of iron, magnesium, calcium, potassium, or phosphorus had a marked influence on the spectral response of the trace metals (Cu, Fe, Al, Ba, Mn, Ni, Ca, Sn, Sr, Cr, Zn, Pb, Mo, and Cd) studied. Matrix effects in this medium did not appear to be concentration-dependent or additive. It was concluded that unless the matrix compositions of standard and specimen were closely matched, serious analytical errors would result.

Keywords: Biological specimen; Emission spectroscopy; Matrix effects; Methods, analytical

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370274774332858

Affiliations: The Division of Clinical Immunology and Rheumatology, Department of Medicine, The University of Alabama, Birmingham, Alabama 35294

Publication date: January 1, 1974

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