Abstract

This paper describes an analytical method for the quantitation of iron, cobalt, nickel, and copper at trace levels with graphite furnace-atomic absorption spectrometry (GF-AAS) without the use of any matrix modifier or preconcentration techniques. A solution of HfF₄ (10%, w/v) in HF (24%) was used for this study. The detection limits for iron, cobalt, nickel, and copper were found to be 3, 1, 3, and 2 ppb, respectively. The average precision of measurements (% RSD) for all the elements was <10%.

Observations of 3p⁵3d–3p⁵4f and 3p⁶3d–3p⁵3d4s transitions in iron, cobalt, nickel, and copper

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J. Opt. Soc. Am. 37(3) 154-158 (1947)